You should be using @RequestParam
instead of @ModelAttribute
, e.g.
@RequestMapping("/{someID}")
public @ResponseBody int getAttr(@PathVariable(value="someID") String id,
@RequestParam String someAttr) {
}
You can even omit @RequestParam
altogether if you choose, and Spring will assume that's what it is:
@RequestMapping("/{someID}")
public @ResponseBody int getAttr(@PathVariable(value="someID") String id,
String someAttr) {
}
I faced the same issue and tried various solutions to load the html page from Spring MVC, following solution worked for me
Step-1 in server's web.xml comment these two lines
<!-- <mime-mapping>
<extension>htm</extension>
<mime-type>text/html</mime-type>
</mime-mapping>-->
<!-- <mime-mapping>
<extension>html</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
-->
Step-2 enter following code in application's web xml
<servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
Step-3 create a static controller class
@Controller
public class FrontController {
@RequestMapping("/landingPage")
public String getIndexPage() {
return "CompanyInfo";
}
}
Step-4 in the Spring configuration file change the suffix to .htm .htm
Step-5 Rename page as .htm file and store it in WEB-INF and build/start the server
localhost:8080/.../landingPage
select u from UserGroup ug inner join ug.user u
where ug.group_id = :groupId
order by u.lastname
As a named query:
@NamedQuery(
name = "User.findByGroupId",
query =
"SELECT u FROM UserGroup ug " +
"INNER JOIN ug.user u WHERE ug.group_id = :groupId ORDER BY u.lastname"
)
Use paths in the HQL statement, from one entity to the other. See the Hibernate documentation on HQL and joins for details.
I had this issue after migrating from spring-boot-starter-data-jpa
ver. 1.5.7 to 2.0.2 (from old hibernate to hibernate 5.2). In my @Configuration
class I injected entityManagerFactory
and transactionManager
.
//I've got my data source defined in application.yml config file,
//so there is no need to configure it from java.
@Autowired
DataSource dataSource;
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
//JpaVendorAdapteradapter can be autowired as well if it's configured in application properties.
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setGenerateDdl(false);
LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
factory.setJpaVendorAdapter(vendorAdapter);
//Add package to scan for entities.
factory.setPackagesToScan("com.company.domain");
factory.setDataSource(dataSource);
return factory;
}
@Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
JpaTransactionManager txManager = new JpaTransactionManager();
txManager.setEntityManagerFactory(entityManagerFactory);
return txManager;
}
Also remember to add hibernate-entitymanager dependency to pom.xml otherwise EntityManagerFactory won't be found on classpath:
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.0.12.Final</version>
</dependency>
To complete the answer from Sotorios Delimanolis.
It's true that ResponseEntity
gives you more flexibility but in most cases you won't need it and you'll end up with these ResponseEntity
everywhere in your controller thus making it difficult to read and understand.
If you want to handle special cases like errors (Not Found, Conflict, etc.), you can add a HandlerExceptionResolver
to your Spring configuration. So in your code, you just throw a specific exception (NotFoundException
for instance) and decide what to do in your Handler (setting the HTTP status to 404), making the Controller code more clear.
in my case favorPathExtension(false) helped me
@Configuration
public class WebMvcConfiguration extends WebMvcConfigurerAdapter {
@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
configurer
.setUseSuffixPatternMatch(false); // to use special character in path variables, for example, `[email protected]`
}
@Override
public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
configurer
.favorPathExtension(false); // to avoid HttpMediaTypeNotAcceptableException on standalone tomcat
}
}
If anyone came to this question looking for ways to add multiple parameters at the same time (my case), you can use .params
with a MultivalueMap instead of adding each .param
:
LinkedMultiValueMap<String, String> requestParams = new LinkedMultiValueMap<>()
requestParams.add("id", "1");
requestParams.add("name", "john");
requestParams.add("age", "30");
mockMvc.perform(get("my/endpoint").params(requestParams)).andExpect(status().isOk())
Well, apparently I had to change my PUT calling function updateUser
. I removed the @Consumes
, the @RequestMapping
and also added a @ResponseBody
to the function. So my method looked like this:
@RequestMapping(value="/{id}",method = RequestMethod.PUT)
@ResponseStatus(HttpStatus.OK)
@ResponseBody
public void updateUser(@PathVariable int id, @RequestBody User temp){
Set<User> set1= obj2.getUsers();
for(User a:set1)
{
if(id==a.getId())
{
set1.remove(a);
a.setId(temp.getId());
a.setName(temp.getName());
set1.add(a);
}
}
Userlist obj3=new Userlist(set1);
obj2=obj3;
}
And it worked!!! Thank you all for the response.
I think you can find it usefull
http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#howto-two-datasources
It shows how to define multiple datasources & assign one of them as primary.
Here is a rather full example, also contains distributes transactions - if you need it.
What you need is to create 2 configuration classes, separate the model/repository packages etc to make the config easy.
Also, in above example, it creates the data sources manually. You can avoid this using the method on spring doc, with @ConfigurationProperties annotation. Here is an example of this:
http://xantorohara.blogspot.com.tr/2013/11/spring-boot-jdbc-with-multiple.html
Hope these helps.
You could also just change the @RequestParam default required status to false so that HTTP response status code 400 is not generated. This will allow you to place the Annotations in any order you feel like.
@RequestParam(required = false)String name
Download Spring STS (SpringSource Tool Suite) and choose Spring Template Project from the Dashboard. This is the easiest way to get a preconfigured spring mvc project, ready to go.
I found the solution described above with :
spring.jackson.serialization-inclusion=non_null
To only work starting at the 1.4.0.RELEASE version of spring boot. In all other cases the config is ignored.
I verified this by experimenting with a modification of the spring boot sample "spring-boot-sample-jersey"
One way to achieve it, is by map your welcome-file to your controller request path in the web.xml
file:
[web.xml]
<web-app ...
<!-- Index -->
<welcome-file-list>
<welcome-file>home</welcome-file>
</welcome-file-list>
</web-app>
[LoginController.java]
@Controller("loginController")
public class LoginController{
@RequestMapping("/home")
public String homepage2(ModelMap model, HttpServletRequest request, HttpServletResponse response){
System.out.println("blablabla2");
model.addAttribute("sigh", "lesigh");
return "index";
}
Java's URI Class can help you out of this:
public static String getCurrentUrl(HttpServletRequest request){
URL url = new URL(request.getRequestURL().toString());
String host = url.getHost();
String userInfo = url.getUserInfo();
String scheme = url.getProtocol();
String port = url.getPort();
String path = request.getAttribute("javax.servlet.forward.request_uri");
String query = request.getAttribute("javax.servlet.forward.query_string");
URI uri = new URI(scheme,userInfo,host,port,path,query,null)
return uri.toString();
}
@PathVariable
is to obtain some placeholder from the URI (Spring call it an URI Template)
— see Spring Reference Chapter 16.3.2.2 URI Template Patterns@RequestParam
is to obtain a parameter from the URI as well — see Spring Reference Chapter 16.3.3.3 Binding request parameters to method parameters with @RequestParamIf the URL http://localhost:8080/MyApp/user/1234/invoices?date=12-05-2013
gets the invoices for user 1234 on December 5th, 2013, the controller method would look like:
@RequestMapping(value="/user/{userId}/invoices", method = RequestMethod.GET)
public List<Invoice> listUsersInvoices(
@PathVariable("userId") int user,
@RequestParam(value = "date", required = false) Date dateOrNull) {
...
}
Also, request parameters can be optional, and as of Spring 4.3.3 path variables can be optional as well. Beware though, this might change the URL path hierarchy and introduce request mapping conflicts. For example, would /user/invoices
provide the invoices for user null
or details about a user with ID "invoices"?
I had to do the same thing that @Luxspes did above..and I am using Spring 4.2.6. Spent quite some time figuring why is ByteArrayResource getting transferred from client to server, but the server is not recognizing it.
ByteArrayResource contentsAsResource = new ByteArrayResource(byteArr){
@Override
public String getFilename(){
return filename;
}
};
server.contextPath=/mainstay
works for me if i had one war file in JBOSS. Among multiple war files where each contain jboss-web.xml it didn't work. I had to put jboss-web.xml inside WEB-INF directory with content
<?xml version="1.0" encoding="UTF-8"?>
<jboss-web xmlns="http://www.jboss.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.jboss.com/xml/ns/javaee http://www.jboss.org/j2ee/schema/jboss-web_5_1.xsd">
<context-root>mainstay</context-root>
</jboss-web>
Let us assume you hit a url as www.example.com/test/111 . Now you have to retrieve value 111 (which is dynamic) to your controller method .At time you ll be using @PathVariable as follows :
@RequestMapping(value = " /test/{testvalue}", method=RequestMethod.GET)
public void test(@PathVariable String testvalue){
//you can use test value here
}
SO the variable value is retrieved from the url
I had this error too because in the file where I used @Transactional
annotation, I was importing the wrong class
import javax.transaction.Transactional;
Instead of javax, use
import org.springframework.transaction.annotation.Transactional;
Try this, it should work if you have configured your view resolver properly
return "redirect:/index.html";
You can use HttpEntity to read both Body and Headers.
@RequestMapping(value = "/restURL")
public String serveRest(HttpEntity<String> httpEntity){
MultiValueMap<String, String> headers =
httpEntity.getHeaders();
Iterator<Map.Entry<String, List<String>>> s =
headers.entrySet().iterator();
while(s.hasNext()) {
Map.Entry<String, List<String>> obj = s.next();
String key = obj.getKey();
List<String> value = obj.getValue();
}
String body = httpEntity.getBody();
}
I found this maven
repo where you could download from directly a zip
file containing all the jars you need.
The solution I prefer is using Maven
, it is easy and you don't have to download each jar
alone. You can do it with the following steps:
Create an empty folder anywhere with any name you prefer, for example spring-source
Create a new file named pom.xml
Copy the xml below into this file
Open the spring-source
folder in your console
Run mvn install
After download finished, you'll find spring jars in /spring-source/target/dependencies
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>spring-source-download</groupId>
<artifactId>SpringDependencies</artifactId>
<version>1.0</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>3.2.4.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.8</version>
<executions>
<execution>
<id>download-dependencies</id>
<phase>generate-resources</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/dependencies</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
Also, if you need to download any other spring project, just copy the dependency
configuration from its corresponding web page.
For example, if you want to download Spring Web Flow
jars, go to its web page, and add its dependency
configuration to the pom.xml
dependencies
, then run mvn install
again.
<dependency>
<groupId>org.springframework.webflow</groupId>
<artifactId>spring-webflow</artifactId>
<version>2.3.2.RELEASE</version>
</dependency>
I had a similar problem, and it turned out that the simple solution was to have my configuration class extend WebMvcAutoConfiguration
:
@Configuration
@EnableWebMvc
@ComponentScan
public class ServerConfiguration extends WebMvcAutoConfiguration{
}
I didn't need any other code to allow my static content to be served, however, I did put a directory called public
under src/main/webapp
and configured maven to point to src/main/webapp
as a resource directory. This means that public
is copied into target/classes
, and is therefore on the classpath at runtime for spring-boot/tomcat to find.
Below is an example of a method in a Java controller.
@RequestMapping(method = RequestMethod.POST)
@ResponseBody
public HttpStatus something(@RequestBody MyModel myModel)
{
return HttpStatus.OK;
}
By using @RequestBody annotation you will get your values mapped with the model you created in your system for handling any specific call. While by using @ResponseBody you can send anything back to the place from where the request was generated. Both things will be mapped easily without writing any custom parser etc.
Use component scanning as given below, if com.project.action.PasswordHintAction
is annotated with stereotype annotations
<context:component-scan base-package="com.project.action"/>
EDIT
I see your problem, in PasswordHintActionTest
you are autowiring PasswordHintAction
. But you did not create bean configuration for PasswordHintAction
to autowire. Add one of stereotype annotation(@Component, @Service, @Controller
) to PasswordHintAction
like
@Component
public class PasswordHintAction extends BaseAction {
private static final long serialVersionUID = -4037514607101222025L;
private String username;
or create xml configuration in applicationcontext.xml
like
<bean id="passwordHintAction" class="com.project.action.PasswordHintAction" />
This is not possible the way you are trying it. The Jackson unmarshalling works on the compiled java code after type erasure. So your
public @ResponseBody ModelMap setTest(@RequestBody List<TestS> refunds, ModelMap map)
is really only
public @ResponseBody ModelMap setTest(@RequestBody List refunds, ModelMap map)
(no generics in the list arg).
The default type Jackson creates when unmarshalling a List
is a LinkedHashMap
.
As mentioned by @Saint you can circumvent this by creating your own type for the list like so:
class TestSList extends ArrayList<TestS> { }
and then modifying your controller signature to
public @ResponseBody ModelMap setTest(@RequestBody TestSList refunds, ModelMap map) {
I had the same error code when I used @Transaction
on a wrong method/actionlevel.
methodWithANumberOfDatabaseActions() {
methodA( ...)
methodA( ...)
}
@Transactional
void methodA( ...) {
... ERROR message
}
I had to place the @Transactional
just above the method methodWithANumberOfDatabaseActions()
, of course.
That solved the error message in my case.
... or you can do it the right way and have a coherent rule for serialisation/deserialisation of dates all across your application. put this in application.properties:
spring.mvc.date-format=yyyy-MM-dd
right-click to your controller.java then properties and check if your text file is encoded with utf-8, if not this is your mistake.
If you don't have 'HIBERNATE_SEQUENCE' sequence created in database (if use oracle or any sequence based database), you shall get same type of error;
Ensure the sequence is present there;
Make simple:
@GetMapping("/health")
public ResponseEntity<String> healthCheck() {
LOG.info("REST request health check");
return new ResponseEntity<>("{\"status\" : \"UP\"}", HttpStatus.OK);
}
Web Application context extended Application Context which is designed to work with the standard javax.servlet.ServletContext so it's able to communicate with the container.
public interface WebApplicationContext extends ApplicationContext {
ServletContext getServletContext();
}
Beans, instantiated in WebApplicationContext will also be able to use ServletContext if they implement ServletContextAware interface
package org.springframework.web.context;
public interface ServletContextAware extends Aware {
void setServletContext(ServletContext servletContext);
}
There are many things possible to do with the ServletContext instance, for example accessing WEB-INF resources(xml configs and etc.) by calling the getResourceAsStream() method. Typically all application contexts defined in web.xml in a servlet Spring application are Web Application contexts, this goes both to the root webapp context and the servlet's app context.
Also, depending on web application context capabilities may make your application a little harder to test, and you may need to use MockServletContext class for testing.
Difference between servlet and root context Spring allows you to build multilevel application context hierarchies, so the required bean will be fetched from the parent context if it's not present in the current application context. In web apps as default there are two hierarchy levels, root and servlet contexts: .
This allows you to run some services as the singletons for the entire application (Spring Security beans and basic database access services typically reside here) and another as separated services in the corresponding servlets to avoid name clashes between beans. For example one servlet context will be serving the web pages and another will be implementing a stateless web service.
This two level separation comes out of the box when you use the spring servlet classes: to configure the root application context you should use context-param tag in your web.xml
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/root-context.xml
/WEB-INF/applicationContext-security.xml
</param-value>
</context-param>
(the root application context is created by ContextLoaderListener which is declared in web.xml
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
) and servlet tag for the servlet application contexts
<servlet>
<servlet-name>myservlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>app-servlet.xml</param-value>
</init-param>
</servlet>
Please note that if init-param will be omitted, then spring will use myservlet-servlet.xml in this example.
See also: Difference between applicationContext.xml and spring-servlet.xml in Spring Framework
First of all, the annotation doesn't annotate List
. It annotates the method, just as RequestMapping
does. Your code is equivalent to
@RequestMapping(value="/orders", method=RequestMethod.GET)
@ResponseBody
public List<Account> accountSummary() {
return accountManager.getAllAccounts();
}
Now what the annotation means is that the returned value of the method will constitute the body of the HTTP response. Of course, an HTTP response can't contain Java objects. So this list of accounts is transformed to a format suitable for REST applications, typically JSON or XML.
The choice of the format depends on the installed message converters, on the values of the produces
attribute of the @RequestMapping
annotation, and on the content type that the client accepts (that is available in the HTTP request headers). For example, if the request says it accepts XML, but not JSON, and there is a message converter installed that can transform the list to XML, then XML will be returned.
I think I read the entire internet to figure out how to get sitemesh to handle my html paths without extension + API paths without extension. I was wrapped up in a straight jacket figuring this out, every turn seemed to break something else. Then I finally came upon this post.
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>/WEB-INF/views/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>jsp</servlet-name>
<url-pattern>/WEB-INF/decorators/*</url-pattern>
</servlet-mapping>
Enter this in your dispatcher-servlet.xml
<mvc:default-servlet-handler/>
A simple working configuration using
@TestPropertySource and properties
@SpringBootTest
@RunWith(SpringJUnit4ClassRunner.class)
@TestPropertySource(properties = {"spring.config.location=classpath:another.yml"})
public class TestClass {
@Test
public void someTest() {
}
}
If you are using webjars. You need to add this in your configure
method:
http.authorizeRequests().antMatchers("/webjars/**").permitAll();
Make sure this is the first statement. For example:
@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
@Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests().antMatchers("/webjars/**").permitAll();
http.authorizeRequests().anyRequest().authenticated();
http.formLogin()
.loginPage("/login")
.failureUrl("/login?error")
.usernameParameter("email")
.permitAll()
.and()
.logout()
.logoutUrl("/logout")
.deleteCookies("remember-me")
.logoutSuccessUrl("/")
.permitAll()
.and()
.rememberMe();
}
You will also need to have this in order to have webjars enabled:
@Configuration
public class MvcConfig extends WebMvcConfigurerAdapter {
...
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
}
...
}
Another simple solution is to add jackson-databind dependency in POM.
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.1</version>
</dependency>
Keep Rest of the code as it is.
Just another possibility: Spring initializes bean by type not by name if you don't define bean with a name, which is ok if you use it by its type:
Producer:
@Service
public void FooServiceImpl implements FooService{}
Consumer:
@Autowired
private FooService fooService;
or
@Autowired
private void setFooService(FooService fooService) {}
but not ok if you use it by name:
ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
ctx.getBean("fooService");
It would complain: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'fooService' is defined
In this case, assigning name to @Service("fooService")
would make it work.
ModelAndView: The name itself explains it is data structure which contains Model and View data.
Map() model=new HashMap();
model.put("key.name", "key.value");
new ModelAndView("view.name", model);
// or as follows
ModelAndView mav = new ModelAndView();
mav.setViewName("view.name");
mav.addObject("key.name", "key.value");
if model contains only single value, we can write as follows:
ModelAndView("view.name","key.name", "key.value");
In your java file ( say: Viper.java )having main class add: "@RestController" and @RequestMapping("/")
@SpringBootApplication
@RestController
public class Viper {
@RequestMapping("/")
public String home(){
return "This is what i was looking for";
}
public static void main( String[] args){
SpringApplication.run(Viper.class , args);
}
}
When I was facing this issue, I simply put just getter setter methods and my issues were resolved.
I am using Spring boot version 2.0.
Put your css/js files in folder src/main/webapp/resources
. Don't put them in WEB-INF
or src/main/resources
.
Then add this line to spring-dispatcher-servlet.xml
<mvc:resources mapping="/resources/**" location="/resources/" />
Include css/js files in jsp pages
<link href="<c:url value="/resources/style.css" />" rel="stylesheet">
Don't forget to declare taglib in your jsp
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
I had similar troubles in eclipse and the only way to fix it for me was to
Just make sure you configure the web module before applying it as by default it will look for your web files in /WebContent/ and this is not what Maven project structure should be.
EDIT:
Here is a second way in case nothing else helps
org.eclipse.wst.common.project.facet.core.xml
, make backup, and remove the web module entry. While working with Maven got same issue then I put XML file into src/main/java
path and it worked.
ApplicationContext context=new ClassPathXmlApplicationContext("spring.xml");
I had the same problem . Same configuration settings and same warning message . What worked for me was : Changing the order of the entries .
The Order matters , i guess .
Preamble: Since Spring-Security 3.2 there is a nice annotation @AuthenticationPrincipal
described at the end of this answer. This is the best way to go when you use Spring-Security >= 3.2.
When you:
HandlerMethodArgumentResolver
or WebArgumentResolver
can solve this in an elegant way, or just want to an learn the background behind @AuthenticationPrincipal
and AuthenticationPrincipalArgumentResolver
(because it is based on a HandlerMethodArgumentResolver
)then keep on reading — else just use @AuthenticationPrincipal
and thank to Rob Winch (Author of @AuthenticationPrincipal
) and Lukas Schmelzeisen (for his answer).
(BTW: My answer is a bit older (January 2012), so it was Lukas Schmelzeisen that come up as the first one with the @AuthenticationPrincipal
annotation solution base on Spring Security 3.2.)
Then you can use in your controller
public ModelAndView someRequestHandler(Principal principal) {
User activeUser = (User) ((Authentication) principal).getPrincipal();
...
}
That is ok if you need it once. But if you need it several times its ugly because it pollutes your controller with infrastructure details, that normally should be hidden by the framework.
So what you may really want is to have a controller like this:
public ModelAndView someRequestHandler(@ActiveUser User activeUser) {
...
}
Therefore you only need to implement a WebArgumentResolver
. It has a method
Object resolveArgument(MethodParameter methodParameter,
NativeWebRequest webRequest)
throws Exception
That gets the web request (second parameter) and must return the User
if its feels responsible for the method argument (the first parameter).
Since Spring 3.1 there is a new concept called HandlerMethodArgumentResolver
. If you use Spring 3.1+ then you should use it. (It is described in the next section of this answer))
public class CurrentUserWebArgumentResolver implements WebArgumentResolver{
Object resolveArgument(MethodParameter methodParameter, NativeWebRequest webRequest) {
if(methodParameter is for type User && methodParameter is annotated with @ActiveUser) {
Principal principal = webRequest.getUserPrincipal();
return (User) ((Authentication) principal).getPrincipal();
} else {
return WebArgumentResolver.UNRESOLVED;
}
}
}
You need to define the Custom Annotation -- You can skip it if every instance of User should always be taken from the security context, but is never a command object.
@Target(ElementType.PARAMETER)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface ActiveUser {}
In the configuration you only need to add this:
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"
id="applicationConversionService">
<property name="customArgumentResolver">
<bean class="CurrentUserWebArgumentResolver"/>
</property>
</bean>
@See: Learn to customize Spring MVC @Controller method arguments
It should be noted that if you're using Spring 3.1, they recommend HandlerMethodArgumentResolver over WebArgumentResolver. - see comment by Jay
HandlerMethodArgumentResolver
for Spring 3.1+public class CurrentUserHandlerMethodArgumentResolver
implements HandlerMethodArgumentResolver {
@Override
public boolean supportsParameter(MethodParameter methodParameter) {
return
methodParameter.getParameterAnnotation(ActiveUser.class) != null
&& methodParameter.getParameterType().equals(User.class);
}
@Override
public Object resolveArgument(MethodParameter methodParameter,
ModelAndViewContainer mavContainer,
NativeWebRequest webRequest,
WebDataBinderFactory binderFactory) throws Exception {
if (this.supportsParameter(methodParameter)) {
Principal principal = webRequest.getUserPrincipal();
return (User) ((Authentication) principal).getPrincipal();
} else {
return WebArgumentResolver.UNRESOLVED;
}
}
}
In the configuration, you need to add this
<mvc:annotation-driven>
<mvc:argument-resolvers>
<bean class="CurrentUserHandlerMethodArgumentResolver"/>
</mvc:argument-resolvers>
</mvc:annotation-driven>
@See Leveraging the Spring MVC 3.1 HandlerMethodArgumentResolver interface
Spring Security 3.2 (do not confuse with Spring 3.2) has own build in solution: @AuthenticationPrincipal
(org.springframework.security.web.bind.annotation.AuthenticationPrincipal
) . This is nicely described in Lukas Schmelzeisen`s answer
It is just writing
ModelAndView someRequestHandler(@AuthenticationPrincipal User activeUser) {
...
}
To get this working you need to register the AuthenticationPrincipalArgumentResolver
(org.springframework.security.web.bind.support.AuthenticationPrincipalArgumentResolver
) : either by "activating" @EnableWebMvcSecurity
or by registering this bean within mvc:argument-resolvers
- the same way I described it with may Spring 3.1 solution above.
@See Spring Security 3.2 Reference, Chapter 11.2. @AuthenticationPrincipal
It works like the Spring 3.2 solution, but in Spring 4.0 the @AuthenticationPrincipal
and AuthenticationPrincipalArgumentResolver
was "moved" to an other package:
org.springframework.security.core.annotation.AuthenticationPrincipal
org.springframework.security.web.method.annotation.AuthenticationPrincipalArgumentResolver
(But the old classes in its old packges still exists, so do not mix them!)
It is just writing
import org.springframework.security.core.annotation.AuthenticationPrincipal;
ModelAndView someRequestHandler(@AuthenticationPrincipal User activeUser) {
...
}
To get this working you need to register the (org.springframework.security.web.method.annotation.
) AuthenticationPrincipalArgumentResolver
: either by "activating" @EnableWebMvcSecurity
or by registering this bean within mvc:argument-resolvers
- the same way I described it with may Spring 3.1 solution above.
<mvc:annotation-driven>
<mvc:argument-resolvers>
<bean class="org.springframework.security.web.method.annotation.AuthenticationPrincipalArgumentResolver" />
</mvc:argument-resolvers>
</mvc:annotation-driven>
@See Spring Security 5.0 Reference, Chapter 39.3 @AuthenticationPrincipal
specifying the "antMatcher" before "authorizeRequests()" like below will restrict the authenticaiton to only those URLs specified in "antMatcher"
http.csrf().disable() .antMatcher("/apiurlneedsauth/**").authorizeRequests().
The @Controller annotation indicates that the class is a "Controller" like a web controller while @RestController annotation indicates that the class is a controller where @RequestMapping methods assume @ResponseBody semantics by default i.e. servicing REST API
As of Spring 4.2.x, you can create custom mapping annotations, using @RequestMapping
as a meta-annotation. So:
Is there a way to produce a "composite/inherited/aggregated" annotation with default values for consumes and produces, such that I could instead write something like:
@JSONRequestMapping(value = "/foo", method = RequestMethod.POST)
Yes, there is such a way. You can create a meta annotation like following:
@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@RequestMapping(consumes = "application/json", produces = "application/json")
public @interface JsonRequestMapping {
@AliasFor(annotation = RequestMapping.class, attribute = "value")
String[] value() default {};
@AliasFor(annotation = RequestMapping.class, attribute = "method")
RequestMethod[] method() default {};
@AliasFor(annotation = RequestMapping.class, attribute = "params")
String[] params() default {};
@AliasFor(annotation = RequestMapping.class, attribute = "headers")
String[] headers() default {};
@AliasFor(annotation = RequestMapping.class, attribute = "consumes")
String[] consumes() default {};
@AliasFor(annotation = RequestMapping.class, attribute = "produces")
String[] produces() default {};
}
Then you can use the default settings or even override them as you want:
@JsonRequestMapping(method = POST)
public String defaultSettings() {
return "Default settings";
}
@JsonRequestMapping(value = "/override", method = PUT, produces = "text/plain")
public String overrideSome(@RequestBody String json) {
return json;
}
You can read more about AliasFor
in spring's javadoc and github wiki.
use @Id .Worked for me.Otherwise it i will throw error.It depends on is there anything missing in your entity class or repository
Once I used double slash while calling the API then I got the same error.
I had to call http://localhost:8080/getSomething but I did Like http://localhost:8080//getSomething. I resolved it by removing extra slash.
There's now a Jackson module (for Jackson 2) specifically designed to handle Hibernate lazy initialization problems when serializing.
https://github.com/FasterXML/jackson-datatype-hibernate
Just add the dependency (note there are different dependencies for Hibernate 3 and Hibernate 4):
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-hibernate4</artifactId>
<version>2.4.0</version>
</dependency>
and then register the module when intializing Jackson's ObjectMapper:
ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new Hibernate4Module());
Documentation currently isn't great. See the Hibernate4Module code for available options.
Update: This will create a second context same as in applicationContext.xml
or you can add this code snippet to your web.xml
<servlet>
<servlet-name>spring-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
instead of
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
Below is one of the way by which you can achieve that, may not be an ideal way to do.
Have one method accepting both types of request, then check what type of request you received, is it of type "GET" or "POST", once you come to know that, do respective actions and the call one method which does common task for both request Methods ie GET and POST.
@RequestMapping(value = "/books")
public ModelAndView listBooks(HttpServletRequest request){
//handle both get and post request here
// first check request type and do respective actions needed for get and post.
if(GET REQUEST){
//WORK RELATED TO GET
}else if(POST REQUEST){
//WORK RELATED TO POST
}
commonMethod(param1, param2....);
}
Building on what is mentioned in the comments, the simplest solution would be:
@RequestMapping(method = RequestMethod.PUT, consumes = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public Collection<BudgetDTO> updateConsumerBudget(@RequestBody SomeDto someDto) throws GeneralException, ParseException {
//whatever
}
class SomeDto {
private List<WhateverBudgerPerDateDTO> budgetPerDate;
//getters setters
}
The solution assumes that the HTTP request you are creating actually has
Content-Type:application/json
instead of text/plain
In my case it was caused by the absence of the jackson-core, jackson-annotations and jackson-databind jars from the runtime classpath. It did not complain with the usual ClassNothFoundException as one would expect but rather with the error mentioned in the original question.
You should use @RequestParam
on those resources with method = RequestMethod.GET
In order to post parameters, you must send them as the request body. A body like JSON or another data representation would depending on your implementation (I mean, consume and produce MediaType
).
Typically, multipart/form-data is used to upload files.
You could change the @RequestParam type to an Integer and make it not required. This would allow your request to succeed, but it would then be null. You could explicitly set it to your default value in the controller method:
@RequestMapping(value = "/test", method = RequestMethod.POST)
@ResponseBody
public void test(@RequestParam(value = "i", required=false) Integer i) {
if(i == null) {
i = 10;
}
// ...
}
I have removed the defaultValue from the example above, but you may want to include it if you expect to receive requests where it isn't set at all:
http://example.com/test
FWIW, I didn't have any success with the spring.resources.static-locations
recommended above; what worked for me was setting spring.thymeleaf.prefix:
report.location=file:/Users/bill/report/html/
spring.thymeleaf.prefix=${report.location}
I recently faced the same need. So I tried Aurand's way but it seems the code is missing ${}. So the code inside SomeJsp.jsp <head></head>
is:
<script>
var model=[];
model.paramOne="${model.paramOne}";
model.paramTwo="${model.paramTwo}";
model.paramThree="${model.paramThree}";
</script>
Note that you can't asssign using var model = ${model}
as it will assign a java object reference. So to access this in external JS:
$(document).ready(function() {
alert(model.paramOne);
});
Short answer:
There is no difference in semantic.
Specifically, @GetMapping is a composed annotation that acts as a shortcut for @RequestMapping(method = RequestMethod.GET).
Further reading:
RequestMapping
can be used at class level:
This annotation can be used both at the class and at the method level. In most cases, at the method level applications will prefer to use one of the HTTP method specific variants @GetMapping, @PostMapping, @PutMapping, @DeleteMapping, or @PatchMapping.
while GetMapping
only applies to method:
Annotation for mapping HTTP GET requests onto specific handler methods.
i used hasAnyRole('ROLE_ADMIN','ROLE_USER')
but i was getting bean creation below error
Error creating bean with name 'org.springframework.security.web.access.intercept.FilterSecurityInterceptor#0': Cannot create inner bean '(inner bean)' of type [org.springframework.security.web.access.expression.ExpressionBasedFilterInvocationSecurityMetadataSource] while setting bean property 'securityMetadataSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#2': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.security.web.access.expression.ExpressionBasedFilterInvocationSecurityMetadataSource]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: Expected a single expression attribute for [/user/*]
then i tried
access="hasRole('ROLE_ADMIN') or hasRole('ROLE_USER')"
and it's working fine for me.
as one of my user is admin as well as user.
for this you need to add use-expressions="true" auto-config="true"
followed by http tag
<http use-expressions="true" auto-config="true" >.....</http>
There are two ways to resolve this issue.Try option 1 first, if it doesn't work try option 2, and your problem is solved.
1) On the top right corner of your console, there is a red button, to stop the spring boot application which is already running on this port just click on the red button to terminate.
2) If the red button is not activated you need to right click on the console and select terminate/disconnect all. Hope this helps.
Bonus tip:- If you want to run your server on a different port of your choice, create a file named application.properties in resource folder of your maven project and write server.port=3000 to run your application on port 3000
I had the dependencies as specified @Greg post. I still faced the issue and could be able to resolve it by adding following additional jackson dependency:
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-xml</artifactId>
<version>2.7.4</version>
</dependency>
I had the same question and it turned out the solution was fairly simple, by using JSON marshaller.
Having your controller just change the signature by changing @ModelAttribute("newObject")
to @RequestBody
. Like this:
@Controller
@RequestMapping(value = "/somewhere/new")
public class SomewhereController {
@RequestMapping(method = RequestMethod.POST)
public String post(@RequestBody NewObject newObject) {
// ...
}
}
Then in your tests you can simply say:
NewObject newObjectInstance = new NewObject();
// setting fields for the NewObject
mockMvc.perform(MockMvcRequestBuilders.post(uri)
.content(asJsonString(newObjectInstance))
.contentType(MediaType.APPLICATION_JSON)
.accept(MediaType.APPLICATION_JSON));
Where the asJsonString
method is just:
public static String asJsonString(final Object obj) {
try {
final ObjectMapper mapper = new ObjectMapper();
final String jsonContent = mapper.writeValueAsString(obj);
return jsonContent;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private static final String[] IP_HEADER_CANDIDATES = {
"X-Forwarded-For",
"Proxy-Client-IP",
"WL-Proxy-Client-IP",
"HTTP_X_FORWARDED_FOR",
"HTTP_X_FORWARDED",
"HTTP_X_CLUSTER_CLIENT_IP",
"HTTP_CLIENT_IP",
"HTTP_FORWARDED_FOR",
"HTTP_FORWARDED",
"HTTP_VIA",
"REMOTE_ADDR"
};
public static String getIPFromRequest(HttpServletRequest request) {
String ip = null;
if (request == null) {
if (RequestContextHolder.getRequestAttributes() == null) {
return null;
}
request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
}
try {
ip = InetAddress.getLocalHost().getHostAddress();
} catch (Exception e) {
e.printStackTrace();
}
if (!StringUtils.isEmpty(ip))
return ip;
for (String header : IP_HEADER_CANDIDATES) {
String ipList = request.getHeader(header);
if (ipList != null && ipList.length() != 0 && !"unknown".equalsIgnoreCase(ipList)) {
return ipList.split(",")[0];
}
}
return request.getRemoteAddr();
}
I combie the code above to this code work for most case. Pass the HttpServletRequest request
you get from the api to the method
Try passing the Model object in your index method and it will work-
@RequestMapping("/")
public String index(org.springframework.ui.Model model) {
return "index";
}
Actually the spring container looks for a Model object in the mapping method. If it finds the same it will pass the returning String as view to the View resolver.
Hope this helps.
I had similar problem with Tomcat 8 embedded in java7 application.
When I launched Tomcat in my application, it worked. But when I launched it through Maven for integration test purpose, I got this error : "No Spring WebApplicationInitializer types detected on classpath".
I fixed it by upgrading org.apache.tomcat.embed:tomcat-embed-*
dependencies from version 8.0.29 to 8.0.47.
If the suggested solutions above didn't solve your issue (as for me), this could also help:
My problem was that I was returning a json string in my response using Springs @ResponseBody
. If you're doing this as well this might help.
Add the following bean to your dispatcher servlet.
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<bean
class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/plain;charset=UTF-8</value>
</list>
</property>
</bean>
</list>
</property>
</bean>
(Found here: http://forum.spring.io/forum/spring-projects/web/74209-responsebody-and-utf-8)
My problem was the lack of BindingResult
parameter after my model attribute.
@RequestMapping(method = RequestMethod.POST, value = "/sign-up", consumes = "application/x-www-form-urlencoded")
public ModelAndView registerUser(@Valid @ModelAttribute UserRegistrationInfo userRegistrationInfo
HttpServletRequest httpRequest,
HttpSession httpSession) { ... }
After I added BindingResult
my controller became
@RequestMapping(method = RequestMethod.POST, value = "/sign-up", consumes = "application/x-www-form-urlencoded")
public ModelAndView registerUser(@Valid @ModelAttribute UserRegistrationInfo userRegistrationInfo, BindingResult bindingResult,
HttpServletRequest httpRequest,
HttpSession httpSession) { ..}
Check answer @sashok_bg @sashko_bg Mersi mnogo
Html
$('#save').click(function(event) {
var jenis = $('#jenis').val();
var model = $('#model').val();
var harga = $('#harga').val();
var json = { "jenis" : jenis, "model" : model, "harga": harga};
$.ajax({
url: 'phone/save',
data: JSON.stringify(json),
type: "POST",
beforeSend: function(xhr) {
xhr.setRequestHeader("Accept", "application/json");
xhr.setRequestHeader("Content-Type", "application/json");
},
success: function(data){
alert(data);
}
});
event.preventDefault();
});
Controller
@Controller
@RequestMapping(value="/phone")
public class phoneController {
phoneDao pd=new phoneDao();
@RequestMapping(value="/save",method=RequestMethod.POST)
public @ResponseBody
int save(@RequestBody Smartphones phone)
{
return pd.save(phone);
}
Dao
public Integer save(Smartphones i) {
int id = 0;
Session session=HibernateUtil.getSessionFactory().openSession();
Transaction trans=session.beginTransaction();
try {
session.save(i);
id=i.getId();
trans.commit();
}
catch(HibernateException he){}
return id;
}
You can simply just pass the attribute you want without any annotations in your controller:
@RequestMapping(value = "/someUrl")
public String someMethod(String valueOne) {
//do stuff with valueOne variable here
}
Works with GET and POST
It wasn't obvious to me that although you can accept a Collection as a request param, but on the consumer side you still have to pass in the collection items as comma separated values.
For example if the server side api looks like this:
@PostMapping("/post-topics")
public void handleSubscriptions(@RequestParam("topics") Collection<String> topicStrings) {
topicStrings.forEach(topic -> System.out.println(topic));
}
Directly passing in a collection to the RestTemplate as a RequestParam like below will result in data corruption
public void subscribeToTopics() {
List<String> topics = Arrays.asList("first-topic", "second-topic", "third-topic");
RestTemplate restTemplate = new RestTemplate();
restTemplate.postForEntity(
"http://localhost:8088/post-topics?topics={topics}",
null,
ResponseEntity.class,
topics);
}
Instead you can use
public void subscribeToTopics() {
List<String> topicStrings = Arrays.asList("first-topic", "second-topic", "third-topic");
String topics = String.join(",",topicStrings);
RestTemplate restTemplate = new RestTemplate();
restTemplate.postForEntity(
"http://localhost:8088/post-topics?topics={topics}",
null,
ResponseEntity.class,
topics);
}
The complete example can be found here, hope it saves someone the headache :)
The solution can be found here https://github.com/spring-projects/spring-framework/issues/22734
you can create two separate post request mappings. For example.
@PostMapping(path = "/test", consumes = "application/json")
public String test(@RequestBody User user) {
return user.toString();
}
@PostMapping(path = "/test", consumes = "application/x-www-form-urlencoded")
public String test(User user) {
return user.toString();
}
JQuery is looking for a json type result, but because the redirect is processed automatically, it will receive the generated html source of your login.htm
page.
One idea is to let the the browser know that it should redirect by adding a redirect
variable to to the resulting object and checking for it in JQuery:
$(document).ready(function(){
jQuery.ajax({
type: "GET",
url: "populateData.htm",
dataType:"json",
data:"userId=SampleUser",
success:function(response){
if (response.redirect) {
window.location.href = response.redirect;
}
else {
// Process the expected results...
}
},
error: function(xhr, textStatus, errorThrown) {
alert('Error! Status = ' + xhr.status);
}
});
});
You could also add a Header Variable to your response and let your browser decide where to redirect. In Java, instead of redirecting, do response.setHeader("REQUIRES_AUTH", "1")
and in JQuery you do on success(!):
//....
success:function(response){
if (response.getResponseHeader('REQUIRES_AUTH') === '1'){
window.location.href = 'login.htm';
}
else {
// Process the expected results...
}
}
//....
Hope that helps.
My answer is heavily inspired by this thread which shouldn't left any questions in case you still have some problems.
<?xml version='1.0' encoding='UTF-8' ?>
<!-- was: <?xml version="1.0" encoding="UTF-8"?> -->
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>
<context:component-scan base-package="com.demo" />
<context:annotation-config />
<mvc:annotation-driven />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="datasource" />
</bean>
<bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/employee" />
<property name="username" value="username" />
<property name="password" value="password" />
</bean>
</beans>
If you are using maven use this dependency:
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>3.1.4.RELEASE</version>
</dependency>
If you are getting this error with a Java configuration, it is usually because you forget to pass in the application context to the DispatcherServlet
constructor:
AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
ctx.register(WebConfig.class);
ServletRegistration.Dynamic dispatcher = sc.addServlet("dispatcher",
new DispatcherServlet()); // <-- no constructor args!
dispatcher.setLoadOnStartup(1);
dispatcher.addMapping("/*");
Fix it by adding the context as the constructor arg:
AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
ctx.register(WebConfig.class);
ServletRegistration.Dynamic dispatcher = sc.addServlet("dispatcher",
new DispatcherServlet(ctx)); // <-- hooray! Spring doesn't look for XML files!
dispatcher.setLoadOnStartup(1);
dispatcher.addMapping("/*");
Separate with commas:
http://localhost:8080/MovieDB/GetJson?name=Actor1,Actor2,Actor3&startDate=20120101&endDate=20120505
or:
http://localhost:8080/MovieDB/GetJson?name=Actor1&name=Actor2&name=Actor3&startDate=20120101&endDate=20120505
or:
http://localhost:8080/MovieDB/GetJson?name[0]=Actor1&name[1]=Actor2&name[2]=Actor3&startDate=20120101&endDate=20120505
Either way, your method signature needs to be:
@RequestMapping(value = "/GetJson", method = RequestMethod.GET)
public void getJson(@RequestParam("name") String[] ticker, @RequestParam("startDate") String startDate, @RequestParam("endDate") String endDate) {
//code to get results from db for those params.
}
This error may happen when mapping variables you defined in REST definition do not match with @PathVariable names.
Example: Suppose you defined in the REST definition
@GetMapping(value = "/{appId}", produces = "application/json", consumes = "application/json")
Then during the definition of the function, it should be
public ResponseEntity<List> getData(@PathVariable String appId)
This error may occur when you use any other variable other than defined in the REST controller definition with @PathVariable. Like, the below code will raise the error as ID is different than appId variable name:
public ResponseEntity<List> getData(@PathVariable String ID)
It has 2 possible solutions:
1) You can set it in the view by javascript... (not recomended)
<input class="form-control"
type="text"
id="tbFormControll"
th:field="*{clientName}"/>
<script type="text/javascript">
document.getElementById("tbFormControll").value = "default";
</script>
2) Or the better solution is to set the value in the model, that you attach to the view in GET operation by a controller. You can also change the value in the controller, just make a Java object from $client.name and call setClientName.
public class FormControllModel {
...
private String clientName = "default";
public String getClientName () {
return clientName;
}
public void setClientName (String value) {
clientName = value;
}
...
}
I hope it helps.
I think the simplest/handy way to consuming JSON is using a Java class that resembles your JSON: https://stackoverflow.com/a/6019761
But if you can't use a Java class you can use one of these two solutions.
Solution 1: you can do it receiving a Map<String, Object>
from your controller:
@RequestMapping(
value = "/process",
method = RequestMethod.POST)
public void process(@RequestBody Map<String, Object> payload)
throws Exception {
System.out.println(payload);
}
Using your request:
curl -H "Accept: application/json" -H "Content-type: application/json" \
-X POST -d '{"name":"value"}' http://localhost:8080/myservice/process
Solution 2: otherwise you can get the POST payload as a String
:
@RequestMapping(
value = "/process",
method = RequestMethod.POST,
consumes = "text/plain")
public void process(@RequestBody String payload) throws Exception {
System.out.println(payload);
}
Then parse the string as you want. Note that must be specified consumes = "text/plain"
on your controller.
In this case you must change your request with Content-type: text/plain
:
curl -H "Accept: application/json" -H "Content-type: text/plain" -X POST \
-d '{"name":"value"}' http://localhost:8080/myservice/process
Spring MVC
is a sub-project of the Spring Framework, targeting design and development of applications that use the MVC (Model-View-Controller) pattern. Spring MVC is designed to integrate fully and completely with the Spring Framework and transitively, most other sub-projects.
Spring Boot
can be understood quite well from this article by the Spring Engineering team. It is supposedly opinionated, i.e. it heavily advocates a certain style of rapid development, but it is designed well enough to accommodate exceptions to the rule, if you will. In short, it is a convention over configuration methodology that is willing to understand your need to break convention when warranted.
HTTPie is a recommended alternative to curl
because you can do just
$ http POST http://example.com/some/endpoint name=value name1=value1
It speaks JSON by default and will handle both setting the necessary header for you as well encoding data as valid JSON. There is also:
Some-Header:value
for headers, and
name==value
for query string parameters. If you have a large chunk of data, you can also read it from a file have it be JSON encoded:
[email protected]
Since Spring 3.0.2 you can return ResponseEntity<T> as a result of the controller's method:
@RequestMapping.....
public ResponseEntity<Object> handleCall() {
if (isFound()) {
// do what you want
return new ResponseEntity<>(HttpStatus.OK);
}
else {
return new ResponseEntity<>(HttpStatus.NOT_FOUND);
}
}
(ResponseEntity<T> is a more flexible than @ResponseBody annotation - see another question)
The issue is because you have a bean of type SuggestionService created through @Component annotation and also through the XML config . As explained by JB Nizet, this will lead to the creation of a bean with name 'suggestionService' created via @Component and another with name 'SuggestionService' created through XML .
When you refer SuggestionService by @Autowired, in your controller, Spring autowires "by type" by default and find two beans of type 'SuggestionService'
You could do the following
Remove @Component from your Service and depend on mapping via XML - Easiest
Remove SuggestionService from XML and autowire the dependencies - use util:map to inject the indexSearchers map.
Use @Resource instead of @Autowired to pick the bean by its name .
@Resource(name="suggestionService")
private SuggestionService service;
or
@Resource(name="SuggestionService")
private SuggestionService service;
both should work.The third is a dirty fix and it's best to resolve the bean conflict through other ways.
Here is a way that I would do it:
public ResponseEntity < ? extends BaseResponse > message(@PathVariable String player) { //REST Endpoint.
try {
Integer.parseInt(player);
return new ResponseEntity < ErrorResponse > (new ErrorResponse("111", "player is not found"), HttpStatus.BAD_REQUEST);
} catch (Exception e) {
}
Message msg = new Message(player, "Hello " + player);
return new ResponseEntity < Message > (msg, HttpStatus.OK);
}
@RequestMapping(value = "/getAll/{player}", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
public ResponseEntity < List < ? extends BaseResponse >> messageAll(@PathVariable String player) { //REST Endpoint.
try {
Integer.parseInt(player);
List < ErrorResponse > errs = new ArrayList < ErrorResponse > ();
errs.add(new ErrorResponse("111", "player is not found"));
return new ResponseEntity < List < ? extends BaseResponse >> (errs, HttpStatus.BAD_REQUEST);
} catch (Exception e) {
}
Message msg = new Message(player, "Hello " + player);
List < Message > msgList = new ArrayList < Message > ();
msgList.add(msg);
return new ResponseEntity < List < ? extends BaseResponse >> (msgList, HttpStatus.OK);
}
I had the same problem when I was trying to work with a basic spring boot app. I tried to use the latest spring-boot version from the official spring-boot site.
As on today, the latest version is 1.5.4.RELEASE. But I keep getting compilation issues on my eclipse IDE irrespective of multiple cleanups to the project. I lowered the version of spring-boot to 1.5.3.RELEASE and it simply worked !! Some of my earlier projects were using the old version which drove me to try this option.
@Autowired
private RestOperations restTemplate;
You can only autowire interfaces with implementations.
Particular example: use a BindingResult object as an argument for a validate method of a Validator inside a Controller.
Then, you can check this object looking for validation errors:
validator.validate(modelObject, bindingResult);
if (bindingResult.hasErrors()) {
// do something
}
You can do it with two ways.
First:
@RequestMapping(value = "/redirect", method = RequestMethod.GET)
public void method(HttpServletResponse httpServletResponse) {
httpServletResponse.setHeader("Location", projectUrl);
httpServletResponse.setStatus(302);
}
Second:
@RequestMapping(value = "/redirect", method = RequestMethod.GET)
public ModelAndView method() {
return new ModelAndView("redirect:" + projectUrl);
}
Register org.springframework.http.converter.json.MappingJacksonHttpMessageConverter
as the message converter and return the object directly from the method.
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="webBindingInitializer">
<bean class="org.springframework.web.bind.support.ConfigurableWebBindingInitializer"/>
</property>
<property name="messageConverters">
<list>
<bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"/>
</list>
</property>
</bean>
and the controller:
@RequestMapping(method=RequestMethod.GET, value="foo/bar")
public @ResponseBody Object fooBar(){
return myService.getActualObject();
}
This requires the dependency org.springframework:spring-webmvc
.
I have adapted the solution of Biju:
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.io.IOUtils;
import org.springframework.core.MethodParameter;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
public class JsonPathArgumentResolver implements HandlerMethodArgumentResolver{
private static final String JSONBODYATTRIBUTE = "JSON_REQUEST_BODY";
private ObjectMapper om = new ObjectMapper();
@Override
public boolean supportsParameter(MethodParameter parameter) {
return parameter.hasParameterAnnotation(JsonArg.class);
}
@Override
public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
String jsonBody = getRequestBody(webRequest);
JsonNode rootNode = om.readTree(jsonBody);
JsonNode node = rootNode.path(parameter.getParameterName());
return om.readValue(node.toString(), parameter.getParameterType());
}
private String getRequestBody(NativeWebRequest webRequest){
HttpServletRequest servletRequest = webRequest.getNativeRequest(HttpServletRequest.class);
String jsonBody = (String) webRequest.getAttribute(JSONBODYATTRIBUTE, NativeWebRequest.SCOPE_REQUEST);
if (jsonBody==null){
try {
jsonBody = IOUtils.toString(servletRequest.getInputStream());
webRequest.setAttribute(JSONBODYATTRIBUTE, jsonBody, NativeWebRequest.SCOPE_REQUEST);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return jsonBody;
}
}
What's the different:
BR
mvc:annotation-driven is a tag added in Spring 3.0 which does the following:
context:annotation-config Looks for annotations on beans in the same application context it is defined and declares support for all the general annotations like @Autowired, @Resource, @Required, @PostConstruct etc etc.
@PostMapping(path = "/my/endpoint", consumes = { MediaType.APPLICATION_FORM_URLENCODED_VALUE })
public ResponseEntity<Void> handleBrowserSubmissions(MyDTO dto) throws Exception {
...
}
That way works for me
Thanks digz6666, your solution works for me with a slight changes because I'm using json:
responseHeaders.add("Content-Type", "application/json; charset=utf-8");
The answer given by axtavt (whch you've recommended) wont work for me. Even if I've added the correct media type:
if (conv instanceof StringHttpMessageConverter) { ((StringHttpMessageConverter) conv).setSupportedMediaTypes( Arrays.asList( new MediaType("text", "html", Charset.forName("UTF-8")), new MediaType("application", "json", Charset.forName("UTF-8")) )); }
There is another instance still same error will shown after you doing everything above mentioned. When you change your codes accordingly mentioned solutions make sure to keep originals. So you can easily go back. So go and again check dispatcher-servelet configuration file's base package location. Is it scanning all relevant packages when you running application.
<context:component-scan base-package="your.pakage.path.here"/>
From HandlerIntercepter
's javadoc:
HandlerInterceptor
is basically similar to a ServletFilter
, but in contrast to the latter it just allows custom pre-processing with the option of prohibiting the execution of the handler itself, and custom post-processing. Filters are more powerful, for example they allow for exchanging the request and response objects that are handed down the chain. Note that a filter gets configured inweb.xml
, aHandlerInterceptor
in the application context.As a basic guideline, fine-grained handler-related pre-processing tasks are candidates for
HandlerInterceptor
implementations, especially factored-out common handler code and authorization checks. On the other hand, aFilter
is well-suited for request content and view content handling, like multipart forms and GZIP compression. This typically shows when one needs to map the filter to certain content types (e.g. images), or to all requests.
With that being said:
So where is the difference between
Interceptor#postHandle()
andFilter#doFilter()
?
postHandle
will be called after handler method invocation but before the view being rendered. So, you can add more model objects to the view but you can not change the HttpServletResponse
since it's already committed.
doFilter
is much more versatile than the postHandle
. You can change the request or response and pass it to the chain or even block the request processing.
Also, in preHandle
and postHandle
methods, you have access to the HandlerMethod
that processed the request. So, you can add pre/post-processing logic based on the handler itself. For example, you can add a logic for handler methods that have some annotations.
What is the best practise in which use cases it should be used?
As the doc said, fine-grained handler-related pre-processing tasks are candidates for HandlerInterceptor
implementations, especially factored-out common handler code and authorization checks. On the other hand, a Filter
is well-suited for request content and view content handling, like multipart forms and GZIP compression. This typically shows when one needs to map the filter to certain content types (e.g. images), or to all requests.
Basically http.antMatcher()
tells Spring to only configure HttpSecurity
if the path matches this pattern.
This is a fix for people who are not using maven. You also need to add standard.jar
to your lib folder for the core tag library to work. Works for jstl version 1.1.
<%@taglib prefix="core" uri="http://java.sun.com/jsp/jstl/core"%>
The simplest way is just to accept the incoming request, and pull out the variables you want in the Controller:
Route::get('search', ['as' => 'search', 'uses' => 'SearchController@search']);
and then in SearchController@search
:
class SearchController extends BaseController {
public function search()
{
$category = Input::get('category', 'default category');
$term = Input::get('term', false);
// do things with them...
}
}
Usefully, you can set defaults in Input::get()
in case nothing is passed to your Controller's action.
As joe_archer says, it's not necessary to put these terms into the URL, and it might be better as a POST (in which case you should update your call to Form::open()
and also your search route in routes.php - Input::get()
remains the same)
item
is most likely a string in your code; the string indices are the ones in the square brackets, e.g., gravatar_id
. So I'd first check your data
variable to see what you received there; I guess that data
is a list of strings (or at least a list containing at least one string) while it should be a list of dictionaries.
#include <bits/stdc++.h>
is an implementation file for a precompiled header.
From, software engineering perspective, it is a good idea to minimize the include. If you use it actually includes a lot of files, which your program may not need, thus increase both compile-time and program size unnecessarily. [edit: as pointed out by @Swordfish in the comments that the output program size remains unaffected. But still, it's good practice to include only the libraries you actually need, unless it's some competitive competition]
But in contests, using this file is a good idea, when you want to reduce the time wasted in doing chores; especially when your rank is time-sensitive.
It works in most online judges, programming contest environments, including ACM-ICPC (Sub-Regionals, Regionals, and World Finals) and many online judges.
The disadvantages of it are that it:
The best solution I've been able to come up with is to include an "onmouseenter" attribute on your element like this:
<button type="button" class="btn btn-default"
data-placement="left"
title="Tooltip on left"
onmouseenter="$(this).tooltip('show')">
</button>
From python 3.2, you have the interact
command, which gives you access to the full python/ipython command space.
Lessons to learn from this:
1) Guid is a value type, not a reference type.
2) Calling the default constructor new S()
on any value type always gives you back the all-zero form of that value type, whatever it is. It is logically the same as default(S)
.
If you need to 'see' the list of temporary tables, you could simply log the names used. (and as others have noted, it is possible to directly query this information)
If you need to 'see' the content of temporary tables, you will need to create real tables with a (unique) temporary name.
You can trace the SQL being executed using SQL Profiler:
[These articles target SQL Server versions later than 2000, but much of the advice is the same.]
If you have a lengthy process that is important to your business, it's a good idea to log various steps (step name/number, start and end time) in the process. That way you have a baseline to compare against when things don't perform well, and you can pinpoint which step(s) are causing the problem more quickly.
Bundle is used to pass data between Activities. You can create a bundle, pass it to Intent that starts the activity which then can be used from the destination activity.
Although purely from engineering perspective, indexed views sound like something everybody could use to improve performance but the real life scenario is very different. I have been unsuccessful is using indexed views where I most need them because of too many restrictions on what can be indexed and what cannot.
If you have outer joins in the views, they cannot be used. Also, common table expressions are not allowed... In fact if you have any ordering in subselects or derived tables (such as with partition by clause), you are out of luck too.
That leaves only very simple scenarios to be utilizing indexed views, something in my opinion can be optimized by creating proper indexes on underlying tables anyway.
I will be thrilled to hear some real life scenarios where people have actually used indexed views to their benefit and could not have done without them
You can make symbolic link to you pip3:
sudo ln -s $(which pip3) /usr/bin/pip3
It helps me in RHEL 7.6
You must know the source encoding.
string someText = "The quick brown fox jumps over the lazy dog.";
byte[] bytes = Encoding.Unicode.GetBytes(someText);
char[] chars = Encoding.Unicode.GetChars(bytes);
Sometimes your json is not a string. For example if you are getting a json from a url like this:
j = urllib2.urlopen('http://site.com/data.json')
you will need to use json.load, not json.loads:
j_obj = json.load(j)
(it is easy to forget: the 's' is for 'string')
Unless you need mod_rewrite for other things, using Apache core IF directive is cleaner & faster:
<If "%{HTTPS} == 'off'">
Redirect permanent / https://yoursite.com/
</If>
You can add more conditions to the IF directive, such as ensure a single canonical domain without the www prefix:
<If "req('Host') != 'myonetruesite.com' || %{HTTPS} == 'off'">
Redirect permanent / https://myonetruesite.com/
</If>
There's a lot of familiarity inertia in using mod_rewrite for everything, but see if this works for you.
More info: https://httpd.apache.org/docs/2.4/mod/core.html#if
To see it in action (try without www. or https://, or with .net instead of .com): https://nohodental.com/ (a site I'm working on).
In case somebody needs to append the output and not overriding, it is possible to use "-a" or "--append" option of "tee" command :
ls 2>&1 | tee -a /tmp/ls.txt
ls 2>&1 | tee --append /tmp/ls.txt
I recently started using VMWare Octant https://github.com/vmware-tanzu/octant. This is a better UI than the Kubernetes Dashboard. You can view the Kubernetes cluster and look at the details of the cluster and the PODS. This will allow you to check the logs and open a terminal into the POD(s).
You can clear out their values by just setting value to an empty string:
var1.value = '';
var2.value = '';
(1:nrow(mydata_2))[mydata_2[,4] == 1578]
Of course there may be more than one row with a value of 1578.
For those who are getting Error Unknown URI: content://downloads/public_downloads
.
I managed to solve this by getting a hint given by @Commonsware in this answer. I found out the class FileUtils on GitHub.
Here InputStream
methods are used to fetch file from Download
directory.
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
if (id != null && id.startsWith("raw:")) {
return id.substring(4);
}
String[] contentUriPrefixesToTry = new String[]{
"content://downloads/public_downloads",
"content://downloads/my_downloads",
"content://downloads/all_downloads"
};
for (String contentUriPrefix : contentUriPrefixesToTry) {
Uri contentUri = ContentUris.withAppendedId(Uri.parse(contentUriPrefix), Long.valueOf(id));
try {
String path = getDataColumn(context, contentUri, null, null);
if (path != null) {
return path;
}
} catch (Exception e) {}
}
// path could not be retrieved using ContentResolver, therefore copy file to accessible cache using streams
String fileName = getFileName(context, uri);
File cacheDir = getDocumentCacheDir(context);
File file = generateFileName(fileName, cacheDir);
String destinationPath = null;
if (file != null) {
destinationPath = file.getAbsolutePath();
saveFileFromUri(context, uri, destinationPath);
}
return destinationPath;
}
There's a utility (resides with CMD) on Windows which can be run from CMD (if you have write access):
set url=https://www.nsa.org/content/hl-images/2017/02/09/NSA.jpg
set file=file.jpg
certutil -urlcache -split -f %url% %file%
echo Done.
Built in Windows application. No need for external downloads.
Tested on Win 10
const [text, setText] = useState('');
const onChangeText = (text) => {
if (+text) {
setText(text);
}
};
<TextInput
keyboardType="numeric"
value={text}
onChangeText={onChangeText}
/>
This should save from physical keyboards
You can either use a double backslash each time
string foo = "D:\\Projects\\Some\\Kind\\Of\\Pathproblem\\wuhoo.xml";
or use the @ symbol
string foo = @"D:\Projects\Some\Kind\Of\Pathproblem\wuhoo.xml";
For those who (unlike OP) are using the express lib:
http.get('*',function(req,res){
res.redirect('http://exmple.com'+req.url)
})
Reflection in C++ is very useful, in cases there you need to run some method for each member(For example: serialization, hashing, compare). I came with generic solution, with very simple syntax:
struct S1
{
ENUMERATE_MEMBERS(str,i);
std::string str;
int i;
};
struct S2
{
ENUMERATE_MEMBERS(s1,i2);
S1 s1;
int i2;
};
Where ENUMERATE_MEMBERS is a macro, which is described later(UPDATE):
Assume we have defined serialization function for int and std::string like this:
void EnumerateWith(BinaryWriter & writer, int val)
{
//store integer
writer.WriteBuffer(&val, sizeof(int));
}
void EnumerateWith(BinaryWriter & writer, std::string val)
{
//store string
writer.WriteBuffer(val.c_str(), val.size());
}
And we have generic function near the "secret macro" ;)
template<typename TWriter, typename T>
auto EnumerateWith(TWriter && writer, T && val) -> is_enumerable_t<T>
{
val.EnumerateWith(write); //method generated by ENUMERATE_MEMBERS macro
}
Now you can write
S1 s1;
S2 s2;
//....
BinaryWriter writer("serialized.bin");
EnumerateWith(writer, s1); //this will call EnumerateWith for all members of S1
EnumerateWith(writer, s2); //this will call EnumerateWith for all members of S2 and S2::s1 (recursively)
So having ENUMERATE_MEMBERS macro in struct definition, you can build serialization, compare, hashing, and other stuffs without touching original type, the only requirement is to implement "EnumerateWith" method for each type, which is not enumerable, per enumerator(like BinaryWriter). Usually you will have to implement 10-20 "simple" types to support any type in your project.
This macro should have zero-overhead to struct creation/destruction in run-time, and the code of T.EnumerateWith() should be generated on-demand, which can be achieved by making it template-inline function, so the only overhead in all the story is to add ENUMERATE_MEMBERS(m1,m2,m3...) to each struct, while implementing specific method per member type is a must in any solution, so I do not assume it as overhead.
UPDATE: There is very simple implementation of ENUMERATE_MEMBERS macro(however it could be a little be extended to support inheritance from enumerable struct)
#define ENUMERATE_MEMBERS(...) \
template<typename TEnumerator> inline void EnumerateWith(TEnumerator & enumerator) const { EnumerateWithHelper(enumerator, __VA_ARGS__ ); }\
template<typename TEnumerator> inline void EnumerateWith(TEnumerator & enumerator) { EnumerateWithHelper(enumerator, __VA_ARGS__); }
// EnumerateWithHelper
template<typename TEnumerator, typename ...T> inline void EnumerateWithHelper(TEnumerator & enumerator, T &...v)
{
int x[] = { (EnumerateWith(enumerator, v), 1)... };
}
// Generic EnumerateWith
template<typename TEnumerator, typename T>
auto EnumerateWith(TEnumerator & enumerator, T & val) -> std::void_t<decltype(val.EnumerateWith(enumerator))>
{
val.EnumerateWith(enumerator);
}
And you do not need any 3rd party library for these 15 lines of code ;)
Xcode 4.3.2 didn't install "Command Line Tools" by default. I had to open Xcode Preferences / Downloads / Components Tab. It had a list of optional components with an "Install" button beside each. This includes "Command Line Tools" and components to support developing for older versions of iOS.
Now "make" is available and you can check by opening terminal and typing:make -v
The result should look like:GNU Make 3.81
You may need "make" even if you don't need Xcode, such as a Perl developer installing Perl Modules using cpan -i on the commandline.
I think your root issue is the use of .
instead of ::
, which will use the namespace.
Try:
enum Days {Saturday, Sunday, Tuesday, Wednesday, Thursday, Friday};
Days day = Days::Saturday;
if(Days::Saturday == day) // I like literals before variables :)
{
std::cout<<"Ok its Saturday";
}
Before you run make oldconfig
, you need to copy a kernel configuration file from an older kernel into the root directory of the new kernel.
You can find a copy of the old kernel configuration file on a running system at /boot/config-3.11.0
. Alternatively, kernel source code has configs in linux-3.11.0/arch/x86/configs/{i386_defconfig / x86_64_defconfig}
If your kernel source is located at /usr/src/linux
:
cd /usr/src/linux
cp /boot/config-3.9.6-gentoo .config
make oldconfig
s := fmt.Sprintf("%s%s", []byte(s1), []byte(s2))
Just to add my two cents... I wanted to implement this when running jobs in a gitlab pipeline on a gitlab runner. The best way to do this was to use this script:
git diff --name-only $CI_COMMIT_BEFORE_SHA $CI_COMMIT_SHA
Also in my case I wanted to filter files by extension, to achieve this I used:
git diff --name-only $CI_COMMIT_BEFORE_SHA $CI_COMMIT_SHA '*.py'
After that you can for example forward this list somewhere else, a linter perhaps ;)
Hope this will help someone.
SELECT to_char(emp_login_date,'DD-MON-YYYY HH24:MI:SS'),A.*
FROM emp_log A
WHERE emp_login_date BETWEEN to_date(to_char('21-MAY-2015 11:50:14'),'DD-MON-YYYY HH24:MI:SS')
AND
to_date(to_char('22-MAY-2015 17:56:52'),'DD-MON-YYYY HH24:MI:SS')
ORDER BY emp_login_date
Use:
SELECT *
FROM YOUR_TABLE
WHERE creation_date <= TRUNC(SYSDATE) - 30
SYSDATE returns the date & time; TRUNC resets the date to being as of midnight so you can omit it if you want the creation_date
that is 30 days previous including the current time.
Depending on your needs, you could also look at using ADD_MONTHS:
SELECT *
FROM YOUR_TABLE
WHERE creation_date <= ADD_MONTHS(TRUNC(SYSDATE), -1)
Try (depending on what result type you want):
Boolean boolean1 = Boolean.valueOf("true");
boolean boolean2 = Boolean.parseBoolean("true");
Advantage:
Boolean.TRUE
or Boolean.FALSE
.The official documentation is in the Javadoc.
UPDATED:
Autoboxing could also be used, but it has a performance cost.
I suggest to use it only when you would have to cast yourself, not when the cast is avoidable.
The proper way to organize your code is to use separate directories in place of namespaces. Each class will be in it's own file, in it's respective namespace folder. index.ts will only re-export each file; no actual code should be in the index.ts file. Organizing your code like this makes it far easier to navigate, and is self-documenting based on directory structure.
// index.ts
import * as greeter from './greeter';
import * as somethingElse from './somethingElse';
export {greeter, somethingElse};
// greeter/index.ts
export * from './greetings.js';
...
// greeter/greetings.ts
export const helloWorld = "Hello World";
You would then use it as such:
import { greeter } from 'your-package'; //Import it like normal, be it from an NPM module or from a directory.
// You can also use the following syntax, if you prefer:
import * as package from 'your-package';
console.log(greeter.helloWorld);
On version 4.4.1, if you can change package name, use:
npm config set @myco:registry http://reg.example.com
Where @myco
is your package scope.
You can install package in this way:
npm install @myco/my-package
For more info: https://docs.npmjs.com/misc/scope
From what I understand, you struggle with what to put into your template.
I'll show an example:
<ul>
{% for guest in guests %}
<li>{{ guest.name }} <a href="{{ path('your_delete_route_name',{'id': guest.id}) }}">[[DELETE]]</a></li>
{% endfor %}
</ul>
Now what happens is it iterates over every object within guests (you'll have to rename this if your object collection is named otherwise!), shows the name and places the correct link. The route name might be different.
@Daniel H (concerning your comment on andcoz' answer, although long time ago): deleting trailing zeros works with
s,([[:digit:]]\.[[:digit:]]*[1-9])[0]*$,\1,g
it's about clearly defining the matching conditions ...
Dates constructed that way use the local timezone, making the constructed date incorrect. To set the timezone of a certain date object is to construct it from a date string that includes the timezone. (I had problems getting that to work in an older Android browser.)
Note that getTime()
returns milliseconds, not plain seconds.
For a UTC/Unix timestamp, the following should suffice:
Math.floor((new Date()).getTime() / 1000)
It will factor the current timezone offset into the result. For a string representation, David Ellis' answer works.
To clarify:
new Date(Y, M, D, h, m, s)
That input is treated as local time. If UTC time is passed in, the results will differ. Observe (I'm in GMT +02:00 right now, and it's 07:50):
> var d1 = new Date();
> d1.toUTCString();
"Sun, 18 Mar 2012 05:50:34 GMT" // two hours less than my local time
> Math.floor(d1.getTime()/ 1000)
1332049834
> var d2 = new Date( d1.getUTCFullYear(), d1.getUTCMonth(), d1.getUTCDate(), d1.getUTCHours(), d1.getUTCMinutes(), d1.getUTCSeconds() );
> d2.toUTCString();
"Sun, 18 Mar 2012 03:50:34 GMT" // four hours less than my local time, and two hours less than the original time - because my GMT+2 input was interpreted as GMT+0!
> Math.floor(d2.getTime()/ 1000)
1332042634
Also note that getUTCDate()
cannot be substituted for getUTCDay()
. This is because getUTCDate()
returns the day of the month; whereas, getUTCDay()
returns the day of the week.
Follow these steps :
Note: SOAPUI will remove all relative paths and will save all XSDs to the same folder. Refer the screenshot :
For those of you getting here looking to remove from an array of objects and using lodash you can do something like this:
const objects = [{ a: 'string', b: false, c: 'string', d: undefined }]
const result = objects.map(({ a, b, c, d }) => _.pickBy({ a,b,c,d }, _.identity))
// [{ a: 'string', c: 'string' }]
Note: You don't have to destruct if you don't want to.
Include the jQuery file first:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript" src="./javascript.js"></script>
<script
src="http://maps.googleapis.com/maps/api/js?key=AIzaSyCJnj2nWoM86eU8Bq2G4lSNz3udIkZT4YY&sensor=false">
</script>
run in root access ssh chould solve this problem
or chmod 0777 /dir/to/be/backedup/
or chown username:user /dir/to/be/backedup/
For xCode 10, first you need to add the image in your assetsCatalogue and then type this:
let imageView = UIImageView(image: #imageLiteral(resourceName: "type the name of your image here..."))
For beginners, let imageView
is the name of the UIImageView
object we are about to create.
An example for embedding an image into a viewControler
file would look like this:
import UIKit
class TutorialViewCotroller: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let imageView = UIImageView(image: #imageLiteral(resourceName: "intoImage"))
view.addSubview(imageView)
}
}
Please notice that I did not use any extension for the image file name, as in my case it is a group of images.
Based on xcopy help, I tried and found that following works perfectly for me (tried on Win 7)
xcopy C:\folder1 C:\folder2\folder1 /E /C /I /Q /G /H /R /K /Y /Z /J
class department:
campus_name="attock"
def printer(self):
print(self.campus_name)
class CS_dept(department):
def overr_CS(self):
department.printer(self)
print("i am child class1")
c=CS_dept()
c.overr_CS()
You Could try the other format for the case statement
CASE WHEN Product.type_id = 10
THEN
(
Select Statement
)
ELSE
(
Other select statement
)
END
FROM Product
WHERE Product.product_id = $pid
See http://msdn.microsoft.com/en-us/library/ms181765.aspx for more information.
$unixtime_to_date = date('jS F Y h:i:s A (T)', $unixtime);
This should work to.
Add name attribute to your option:
<option value="0" name="Chicken">Chicken</option>
With that you can use the HTMLOptionsCollection.namedItem("Chicken").value to set the value of your select element.
Here is an option. This is just for the x coordinates.
var div1Pos = $("#div1").offset();
var div1X = div1Pos.left;
$('#div2').css({left: div1X});
How to use in
or out
or ref
in C#?
C#
have the same functionality but with some boundaries.in
arguments cannot be modified by the called method.ref
arguments may be modified.ref
must be initialized before being used by caller it can be read and updated in the method.out
arguments must be modified by the caller.out
arguments must be initialized in the methodin
arguments must be initialized before being passed in a method call. However, the called method may not assign a value or modify the argument.You can't use the in
, ref
, and out
keywords for the following kinds of methods:
async
modifier.yield return
or yield break
statement.The zip()
function in Python 3 returns an iterator. That is the reason why when you print test1
you get - <zip object at 0x1007a06c8>
. From documentation -
Make an iterator that aggregates elements from each of the iterables.
But once you do - list(test1)
- you have exhausted the iterator. So after that anytime you do list(test1)
would only result in empty list.
In case of test2
, you have already created the list once, test2
is a list, and hence it will always be that list.
I happen to be consulting for a Fortune 500 company and it's sadly Windows 7 and no administrator privileges. Thus Node.js, Npm, Visual Studio Code, etc.. were pushed to my machine - I cannot change a lot, etc...
For this computer running Windows 7:
Below are my new settings. The one not working is commented out.
{
"update.channel": "none",
"terminal.integrated.shell.windows": "C:\\Program Files\\Git\\bin\\bash.exe"
//"terminal.integrated.shell.windows": "C:\\Windows\\sysnative\\bash.exe"
}
I weird bug* in visual studio 2010, if you put controls inside a Placeholder it does not render them in design view mode.
This is especially true for Hidenfields and Empty labels.
I would love to use placeholders instead of panels but I hate the fact I cant put other controls inside placeholders at design time in the GUI.
Have a look at using FileInfo.Name Property
something like
string[] files = Directory.GetFiles(dir);
for (int iFile = 0; iFile < files.Length; iFile++)
string fn = new FileInfo(files[iFile]).Name;
Also have a look at using DirectoryInfo Class and FileInfo Class
I try to join the solutions mention here as there are some important points to it needed to list.
As mentioned in the @igorw's answer the URL to repository must be in that case specified in the composer.json file, however since in both cases the composer.json must exist (unlike the 2nd way @Mike Graf) publishing it on the Packagist is not that much different (furthermore also Github currently provides packages services as npm packages), only difference instead of literally inputting the URL at the packagist interface once being signed up.
Moreover, it has a shortcoming that it cannot rely on an external library that uses this approach as recursive repository definitions do not work in Composer. Furthermore, due to it, there seems to be a "bug" upon it, since the recursive definition failed at the dependency, respecifying the repositories explicitly in the root does not seem to be enough but also all the dependencies from the packages would have to be respecified.
With a composer file (answered Oct 18 '12 at 15:13 igorw)
{
"repositories": [
{
"url": "https://github.com/l3pp4rd/DoctrineExtensions.git",
"type": "git"
}
],
"require": {
"gedmo/doctrine-extensions": "~2.3"
}
}
Without a composer file (answered Jan 23 '13 at 17:28 Mike Graf)
"repositories": [
{
"type":"package",
"package": {
"name": "l3pp4rd/doctrine-extensions",
"version":"master",
"source": {
"url": "https://github.com/l3pp4rd/DoctrineExtensions.git",
"type": "git",
"reference":"master"
}
}
}
],
"require": {
"l3pp4rd/doctrine-extensions": "master"
}
x # initial numpy array
I = np.argsort(x) or I = x.argsort()
y = np.sort(x) or y = x.sort()
z # reverse sorted array
z = x[I[::-1]]
z = -np.sort(-x)
z = np.flip(y)
z = y[::-1]
z = np.flipud(y)
z = np.flip(y, axis=0)
z = y[::-1, :]
z = np.fliplr(y)
z = np.flip(y, axis=1)
Testing on a 100×10×10 array 1000 times.
Method | Time (ms)
-------------+----------
y[::-1] | 0.126659 # only in first dimension
-np.sort(-x) | 0.133152
np.flip(y) | 0.121711
x[I[::-1]] | 4.611778
x.sort() | 0.024961
x.argsort() | 0.041830
np.flip(x) | 0.002026
This is mainly due to reindexing rather than argsort
.
# Timing code
import time
import numpy as np
def timeit(fun, xs):
t = time.time()
for i in range(len(xs)): # inline and map gave much worse results for x[-I], 5*t
fun(xs[i])
t = time.time() - t
print(np.round(t,6))
I, N = 1000, (100, 10, 10)
xs = np.random.rand(I,*N)
timeit(lambda x: np.sort(x)[::-1], xs)
timeit(lambda x: -np.sort(-x), xs)
timeit(lambda x: np.flip(x.sort()), xs)
timeit(lambda x: x[x.argsort()[::-1]], xs)
timeit(lambda x: x.sort(), xs)
timeit(lambda x: x.argsort(), xs)
timeit(lambda x: np.flip(x), xs)
You can't, you either need to keep the index separately:
int index = 0;
for(Element song : question) {
System.out.println("Current index is: " + (index++));
}
or use a normal for loop:
for(int i = 0; i < question.length; i++) {
System.out.println("Current index is: " + i);
}
The reason is you can use the condensed for syntax to loop over any Iterable, and it's not guaranteed that the values actually have an "index"
Replace void *disconnectFunc;
with void (*disconnectFunc)();
to declare function pointer type variable. Or even better use a typedef
:
typedef void (*func_t)(); // pointer to function with no args and void return
...
func_t fptr; // variable of pointer to function
...
void D::setDisconnectFunc( func_t func )
{
fptr = func;
}
void D::disconnected()
{
fptr();
connected = false;
}
You can use ORDER BY
inside the GROUP_CONCAT
function in this way:
SELECT li.client_id, group_concat(li.percentage ORDER BY li.views ASC) AS views,
group_concat(li.percentage ORDER BY li.percentage ASC)
FROM li GROUP BY client_id
I had the same problem and solved it by running the following command:
sudo /Library/StartupItems/VirtualBox/VirtualBox restart
In later versions, the command is
sudo /Library/Application\ Support/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh restart
Make sure you've unblocked VirtualBox's kernel extensions in System Preferences->Security and Privacy->General (You'll get a popup when you install VirtualBox).
Your use-case isn't clear. However, if you are certain that you need this to be based on the DOM, and not model-data, then this is a way for one directive to have a reference to all elements with another directive specified on them.
The way is that the child directive can require
the parent directive. The parent directive can expose a method that allows direct directive to register their element with the parent directive. Through this, the parent directive can access the child element(s). So if you have a template like:
<div parent-directive>
<div child-directive></div>
<div child-directive></div>
</div>
Then the directives can be coded like:
app.directive('parentDirective', function($window) {
return {
controller: function($scope) {
var registeredElements = [];
this.registerElement = function(childElement) {
registeredElements.push(childElement);
}
}
};
});
app.directive('childDirective', function() {
return {
require: '^parentDirective',
template: '<span>Child directive</span>',
link: function link(scope, iElement, iAttrs, parentController) {
parentController.registerElement(iElement);
}
};
});
You can see this in action at http://plnkr.co/edit/7zUgNp2MV3wMyAUYxlkz?p=preview
db.collection.find({name:{'$regex' : 'string', '$options' : 'i'}})
Where i use for cases insensitive fetch data
db.collection.find({"name":/aus/})
Above will provide the result which have the aus in name cantaing aus.
Sometimes, this error pops up because of the kernel has reached its limit. Try to restart the kernel redo the necessary steps.
You don't even need width: 100%
in your child div:
ps -Af | grep "tomcat" | grep -v grep | awk '{print$2}' | xargs kill -9
In my case nothing was successful, after a while looking what was happening I found this on my config file. Not sure how it got there
% cat ~/.gitconfig
[user]
email = [email protected]
name = xxxxxx
[alias]
g = grep -n -i --heading --break
[url "git+https://github.com/"]
insteadOf = [email protected]:
[url "git+https://"]
insteadOf = git://
After removing the url properties everything was working fine again
I would recommend you google 'Read objects in folder'. You might need to create a reader and a list and let the reader read all the object names in the folder and add them to the list in n loops.
You could map the strings to function pointer using a standard collection; executing the function when a match is found.
EDIT: Using the example in the article I gave the link to in my comment, you can declare a function pointer type:
typedef void (*funcPointer)(int);
and create multiple functions to match the signature:
void String1Action(int arg);
void String2Action(int arg);
The map would be std::string
to funcPointer
:
std::map<std::string, funcPointer> stringFunctionMap;
Then add the strings and function pointers:
stringFunctionMap.add("string1", &String1Action);
I've not tested any of the code I have just posted, it's off the top of my head :)
public class MainClass {
public static void main(String args[]) {
Thread t = Thread.currentThread();
t.setName("My Thread");
t.setPriority(1);
System.out.println("current thread: " + t);
int active = Thread.activeCount();
System.out.println("currently active threads: " + active);
Thread all[] = new Thread[active];
Thread.enumerate(all);
for (int i = 0; i < active; i++) {
System.out.println(i + ": " + all[i]);
}
}
}
If you don't need typesafe, just bring block to a new separated file and change the extension to .js,.jsx
The difference is not just for Chrome but for most of the web browsers.
F5
refreshes the web page and often reloads the same page from the cached contents of the web browser. However, reloading from cache every time is not guaranteed and it also depends upon the cache expiry.
Shift + F5
forces the web browser to ignore its cached contents and retrieve a fresh copy of the web page into the browser.
Shift + F5
guarantees loading of latest contents of the web page.
However, depending upon the size of page, it is usually slower than F5
.
You may want to refer to: What requests do browsers' "F5" and "Ctrl + F5" refreshes generate?
Sys.sleep() will not work if the CPU usage is very high; as in other critical high priority processes are running (in parallel).
This code worked for me. Here I am printing 1 to 1000 at a 2.5 second interval.
for (i in 1:1000)
{
print(i)
date_time<-Sys.time()
while((as.numeric(Sys.time()) - as.numeric(date_time))<2.5){} #dummy while loop
}
DNS info is cached at many places. If you have a server in Europe you may want to try to proxy through it
You can also create a symlink:
ln -s /opt/ruby-enterprise-1.8.7-2010.02/lib/ruby/gems/1.8/gems/bin/bundle /usr/bin/bundle
more efficient is
def concat_df_str1(df):
""" run time: 1.3416s """
return pd.Series([''.join(row.astype(str)) for row in df.values], index=df.index)
and here is a time test:
import numpy as np
import pandas as pd
from time import time
def concat_df_str1(df):
""" run time: 1.3416s """
return pd.Series([''.join(row.astype(str)) for row in df.values], index=df.index)
def concat_df_str2(df):
""" run time: 5.2758s """
return df.astype(str).sum(axis=1)
def concat_df_str3(df):
""" run time: 5.0076s """
df = df.astype(str)
return df[0] + df[1] + df[2] + df[3] + df[4] + \
df[5] + df[6] + df[7] + df[8] + df[9]
def concat_df_str4(df):
""" run time: 7.8624s """
return df.astype(str).apply(lambda x: ''.join(x), axis=1)
def main():
df = pd.DataFrame(np.zeros(1000000).reshape(100000, 10))
df = df.astype(int)
time1 = time()
df_en = concat_df_str4(df)
print('run time: %.4fs' % (time() - time1))
print(df_en.head(10))
if __name__ == '__main__':
main()
final, when sum
(concat_df_str2) is used, the result is not simply concat, it will trans to integer.
<graphics.h>
is very old library. It's better to use something that is new
Here are some 2D libraries (platform independent) for C/C++
Also there is a free very powerful 3D open source graphics library for C++
using System;
class Solution
{
static string timeConversion(string s)
{
return DateTime.Parse(s).ToString("HH:mm");
}
static void Main(string[] args)
{
Console.WriteLine(timeConversion("01:00 PM"));
Console.Read();
}
}
For Mac Catilina 10.15.5 and later version:
add in your ~/.zshrc file
function parse_git_branch() {
git branch 2> /dev/null | sed -n -e 's/^\* \(.*\)/[\1]/p'
}
setopt PROMPT_SUBST
export PROMPT='%F{grey}%n%f %F{cyan}%~%f %F{green}$(parse_git_branch)%f %F{normal}$%f '
Borrowing from Patrick's answer, I found that I had to do this:
<button onclick="location.href='@Url.Action("Index", "Users")';return false;">Cancel</button>
to avoid calling the form's post method.
Python 3.7.7
import typing
if isinstance([1, 2, 3, 4, 5] , typing.List):
print("It is a list")
Postback is essentially when a form is submitted to the same page or script (.php .asp etc) as you are currently on to proccesses the data rather than sending you to a new page.
An example could be a page on a forum (viewpage.php), where you submit a comment and it is submitted to the same page (viewpage.php) and you would then see it with the new content added.
You can use Container to contain your widget:
Container(
decoration: BoxDecoration(
border: Border.all(
color: Color(0xff000000),
width: 1,
)),
child: Text()
),
For those looking for a workaround, you can use an attribute selector, for instance, if your class begins with a number. Change:
.000000-8{background:url(../../images/common/000000-0.8.png);} /* DOESN'T WORK!! */
to this:
[class="000000-8"]{background:url(../../images/common/000000-0.8.png);} /* WORKS :) */
Also, if there are multiple classes, you will need to specify them in selector I think.
Sources:
var div = document.createElement('div');
div.setAttribute("id", "tbl");
document.body.appendChild(div)
document.getElementById("tbl").innerHTML = "<table border = '1'>" +
'<tr>' +
'<th>Header 1</th>' +
'<th>Header 2</th> ' +
'<th>Header 3</th>' +
'</tr>' +
'<tr>' +
'<td>Data 1</td>' +
'<td>Data 2</td>' +
'<td>Data 3</td>' +
'</tr>' +
'<tr>' +
'<td>Data 1</td>' +
'<td>Data 2</td>' +
'<td>Data 3</td>' +
'</tr>' +
'<tr>' +
'<td>Data 1</td>' +
'<td>Data 2</td>' +
'<td>Data 3</td>' +
'</tr>'
_x000D_
Here is an alternative way:
select * from tbl where col like 'ABC%'
union
select * from tbl where col like 'XYZ%'
union
select * from tbl where col like 'PQR%';
Here is the test code to verify:
create table tbl (col varchar(255));
insert into tbl (col) values ('ABCDEFG'), ('HIJKLMNO'), ('PQRSTUVW'), ('XYZ');
select * from tbl where col like 'ABC%'
union
select * from tbl where col like 'XYZ%'
union
select * from tbl where col like 'PQR%';
+----------+
| col |
+----------+
| ABCDEFG |
| XYZ |
| PQRSTUVW |
+----------+
3 rows in set (0.00 sec)
Another option for Pagination in RESTFul APIs, is to use the Link header introduced here. For example Github use it as follow:
Link: <https://api.github.com/user/repos?page=3&per_page=100>; rel="next",
<https://api.github.com/user/repos?page=50&per_page=100>; rel="last"
The possible values for rel
are: first, last, next, previous. But by using Link
header, it may be not possible to specify total_count (total number of elements).
I personally prefer the "boolean1 ^ boolean2" expression due to its succinctness.
If I was in your situation (working in a team), I would strike a compromise by encapsulating the "boolean1 ^ boolean2" logic in a function with a descriptive name such as "isDifferent(boolean1, boolean2)".
For example, instead of using "boolean1 ^ boolean2", you would call "isDifferent(boolean1, boolean2)" like so:
if (isDifferent(boolean1, boolean2))
{
//do it
}
Your "isDifferent(boolean1, boolean2)" function would look like:
private boolean isDifferent(boolean1, boolean2)
{
return boolean1 ^ boolean2;
}
Of course, this solution entails the use of an ostensibly extraneous function call, which in itself is subject to Best Practices scrutiny, but it avoids the verbose (and ugly) expression "(boolean1 && !boolean2) || (boolean2 && !boolean1)"!
Your for loop is not right, if you need the index in the for loop use:
for index, item in enumerate(emails):
# whatever (but you can't remove element while iterating)
In your case, Bogdan solution is ok, but your data structure choice is not so good. Having to maintain these two lists with data from one related to data from the other at same index is clumsy.
A list of tupple (email, otherdata) may be better, or a dict with email as key.
You might want to try www.reuxables.com - we have both commercial and free themes, and it is the largest and most diverse theme library for WPF.
Basically, with prepared statements the data coming in from a potential hacker is treated as data - and there's no way it can be intermixed with your application SQL and/or be interpreted as SQL (which can happen when data passed in is placed directly into your application SQL).
This is because prepared statements "prepare" the SQL query first to find an efficient query plan, and send the actual values that presumably come in from a form later - at that time the query is actually executed.
More great info here:
You can do it like this:
// step 1
var one = "1" + "2" + "3"; // string value "123"
// step 2
var two = parseInt(one); // integer value 123
// step 3
var three = 123 + 100; // integer value 223
// step 4
var four = three.toString(); // string value "223"
If mipadi's suggestion doesn't work, add this to config/environment.rb
# force Rails into production mode when
# you don't control web/app server and can't set it the proper way
ENV['RAILS_ENV'] ||= 'production'
I know this question was old, but I wanted a solution that doesn't involve libraries outside those included JRE6 (i.e. Apache Commons is not acceptable), and I came up with a simple solution using the built-in java.io.StreamTokenizer
:
import java.io.*;
// ...
String literal = "\"Has \\\"\\\\\\\t\\\" & isn\\\'t \\\r\\\n on 1 line.\"";
StreamTokenizer parser = new StreamTokenizer(new StringReader(literal));
String result;
try {
parser.nextToken();
if (parser.ttype == '"') {
result = parser.sval;
}
else {
result = "ERROR!";
}
}
catch (IOException e) {
result = e.toString();
}
System.out.println(result);
Output:
Has "\ " & isn't
on 1 line.
This worked for me: :)
<button (click)="updatePendingApprovals(''+pendingApproval.personId, ''+pendingApproval.personId)">Approve</button>
updatePendingApprovals(planId: string, participantId: string) : void {
alert('PlanId:' + planId + ' ParticipantId:' + participantId);
}
Try to connect using "127.0.0.1" instead "localhost".
You could always include it using __DIR__
:
include(dirname(__DIR__).'/config.php');
__DIR__
is a 'magical constant' and returns the directory of the current file without the trailing slash. It's actually an absolute path, you just have to concatenate the file name to __DIR__
. In this case, as we need to ascend a directory we use PHP's dirname
which ascends the file tree, and from here we can access config.php
.
You could set the root path in this method too:
define('ROOT_PATH', dirname(__DIR__) . '/');
in test.php would set your root to be at the /root/
level.
include(ROOT_PATH.'config.php');
Should then work to include the config file from where you want.
As others have said,
new String[0]
will indeed create an empty array. However, there's one nice thing about arrays - their size can't change, so you can always use the same empty array reference. So in your code, you can use:
private static final String[] EMPTY_ARRAY = new String[0];
and then just return EMPTY_ARRAY
each time you need it - there's no need to create a new object each time.
Generally speaking, you'll hardly ever need to do type comparisons unless you're doing something with reflection or interfaces. Nonetheless:
If you know the type you want to compare it with, use the is
or as
operators:
if( unknownObject is TypeIKnow ) { // run code here
The as
operator performs a cast that returns null if it fails rather than an exception:
TypeIKnow typed = unknownObject as TypeIKnow;
If you don't know the type and just want runtime type information, use the .GetType() method:
Type typeInformation = unknownObject.GetType();
In newer versions of C#, you can use the is
operator to declare a variable without needing to use as
:
if( unknownObject is TypeIKnow knownObject ) {
knownObject.SomeMember();
}
Previously you would have to do this:
TypeIKnow knownObject;
if( (knownObject = unknownObject as TypeIKnow) != null ) {
knownObject.SomeMember();
}
If you select two dates from 'your_table' and want too see the result as a single column output (eg. 'days - hh:mm:ss') you could use something like this. First you could calculate the interval between these two dates and after that export all the data you need from that interval:
select extract (day from numtodsinterval (second_date
- add_months (created_date,
floor (months_between (second_date,created_date))),
'day'))
|| ' days - '
|| extract (hour from numtodsinterval (second_date
- add_months (created_date,
floor (months_between (second_date,created_date))),
'day'))
|| ':'
|| extract (minute from numtodsinterval (second_date
- add_months (created_date,
floor (months_between (second_date, created_date))),
'day'))
|| ':'
|| extract (second from numtodsinterval (second_date
- add_months (created_date,
floor (months_between (second_date, created_date))),
'day'))
from your_table
And that should give you result like this: 0 days - 1:14:55
I don't like having to change my signature to use the HttpCreateResponse type, so I came up with a little bit of an extended solution to hide that.
public class HttpActionResult : IHttpActionResult
{
public HttpActionResult(HttpRequestMessage request) : this(request, HttpStatusCode.OK)
{
}
public HttpActionResult(HttpRequestMessage request, HttpStatusCode code) : this(request, code, null)
{
}
public HttpActionResult(HttpRequestMessage request, HttpStatusCode code, object result)
{
Request = request;
Code = code;
Result = result;
}
public HttpRequestMessage Request { get; }
public HttpStatusCode Code { get; }
public object Result { get; }
public Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
{
return Task.FromResult(Request.CreateResponse(Code, Result));
}
}
You can then add a method to your ApiController (or better your base controller) like this:
protected IHttpActionResult CustomResult(HttpStatusCode code, object data)
{
// Request here is the property on the controller.
return new HttpActionResult(Request, code, data);
}
Then you can return it just like any of the built in methods:
[HttpPost]
public IHttpActionResult Post(Model model)
{
return model.Id == 1 ?
Ok() :
CustomResult(HttpStatusCode.NotAcceptable, new {
data = model,
error = "The ID needs to be 1."
});
}
Some ideas in the following answer:
Steps in creating a web service using Axis2 - The client code
Gives an example of a Groovy client invoking the ADB classes generated from the WSDL.
There are lots of web service frameworks out there...
How about this?
JSONObject jsonObject = new JSONObject (YOUR_JSON_STRING);
JSONObject ipinfo = jsonObject.getJSONObject ("ipinfo");
String ip_address = ipinfo.getString ("ip_address");
JSONObject location = ipinfo.getJSONObject ("Location");
String latitude = location.getString ("latitude");
System.out.println (latitude);
This sample code using "org.json.JSONObject"
The only time I've seen something like this happen is when I have a bad connection, or when somebody is closing the socket that I am using from a different thread context.
As a newbie to combinators, I found Mike Vanier's article (thanks Nicholas Mancuso) to be really helpful. I would like to write a summary, besides documenting my understanding, if it could be of help to some others I would be very glad.
Using factorial as an example, we use the following almost-factorial
function to calculate factorial of number x
:
def almost-factorial f x = if iszero x
then 1
else * x (f (- x 1))
In the pseudo-code above, almost-factorial
takes in function f
and number x
(almost-factorial
is curried, so it can be seen as taking in function f
and returning a 1-arity function).
When almost-factorial
calculates factorial for x
, it delegates the calculation of factorial for x - 1
to function f
and accumulates that result with x
(in this case, it multiplies the result of (x - 1) with x).
It can be seen as almost-factorial
takes in a crappy version of factorial function (which can only calculate till number x - 1
) and returns a less-crappy version of factorial (which calculates till number x
). As in this form:
almost-factorial crappy-f = less-crappy-f
If we repeatedly pass the less-crappy version of factorial to almost-factorial
, we will eventually get our desired factorial function f
. Where it can be considered as:
almost-factorial f = f
The fact that almost-factorial f = f
means f
is the fix-point of function almost-factorial
.
This was a really interesting way of seeing the relationships of the functions above and it was an aha moment for me. (please read Mike's post on fix-point if you haven't)
To generalize, we have a non-recursive function fn
(like our almost-factorial), we have its fix-point function fr
(like our f), then what Y
does is when you give Y
fn
, Y
returns the fix-point function of fn
.
So in summary (simplified by assuming fr
takes only one parameter; x
degenerates to x - 1
, x - 2
... in recursion):
fn
: def fn fr x = ...accumulate x with result from (fr (- x 1))
, this is the almost-useful function - although we cannot use fn
directly on x
, it will be useful very soon. This non-recursive fn
uses a function fr
to calculate its resultfn fr = fr
, fr
is the fix-point of fn
, fr
is the useful funciton, we can use fr
on x
to get our resultY fn = fr
, Y
returns the fix-point of a function, Y
turns our almost-useful function fn
into useful fr
Y
(not included)I will skip the derivation of Y
and go to understanding Y
. Mike Vainer's post has a lot of details.
Y
Y
is defined as (in lambda calculus format):
Y f = ?s.(f (s s)) ?s.(f (s s))
If we replace the variable s
in the left of the functions, we get
Y f = ?s.(f (s s)) ?s.(f (s s))
=> f (?s.(f (s s)) ?s.(f (s s)))
=> f (Y f)
So indeed, the result of (Y f)
is the fix-point of f
.
(Y f)
work?Depending the signature of f
, (Y f)
can be a function of any arity, to simplify, let's assume (Y f)
only takes one parameter, like our factorial function.
def fn fr x = accumulate x (fr (- x 1))
since fn fr = fr
, we continue
=> accumulate x (fn fr (- x 1))
=> accumulate x (accumulate (- x 1) (fr (- x 2)))
=> accumulate x (accumulate (- x 1) (accumulate (- x 2) ... (fn fr 1)))
the recursive calculation terminates when the inner-most (fn fr 1)
is the base case and fn
doesn't use fr
in the calculation.
Looking at Y
again:
fr = Y fn = ?s.(fn (s s)) ?s.(fn (s s))
=> fn (?s.(fn (s s)) ?s.(fn (s s)))
So
fr x = Y fn x = fn (?s.(fn (s s)) ?s.(fn (s s))) x
To me, the magical parts of this setup are:
fn
and fr
interdepend on each other: fr
'wraps' fn
inside, every time fr
is used to calculate x
, it 'spawns' ('lifts'?) an fn
and delegates the calculation to that fn
(passing in itself fr
and x
); on the other hand, fn
depends on fr
and uses fr
to calculate result of a smaller problem x-1
.fr
is used to define fn
(when fn
uses fr
in its operations), the real fr
is not yet defined.fn
which defines the real business logic. Based on fn
, Y
creates fr
- a helper function in a specific form - to facilitate the calculation for fn
in a recursive manner.It helped me understanding Y
this way at the moment, hope it helps.
BTW, I also found the book An Introduction to Functional Programming Through Lambda Calculus very good, I'm only part through it and the fact that I couldn't get my head around Y
in the book led me to this post.
Try this request :
SELECT column_name, data_type FROM information_schema.columns WHERE
table_name = 'YOUR_TABLE' AND column_name = 'YOUR_FIELD';
I'm going to suggest the non-obvious. There is a fantastic (and often under-used) tool called the Immediate Window in Visual Basic Editor. Basically, you can write out commands in VBA and execute them on the spot, sort of like command prompt. It's perfect for cases like this.
Press ALT+F11 to open VBE, then Control+G to open the Immediate Window. Type the following and hit enter:
for each v in range("K2:K5000") : v.value = "'" & v.value : next
And boom! You are all done. No need to create a macro, declare variables, no need to drag and copy, etc. Close the window and get back to work. The only downfall is to undo it, you need to do it via code since VBA will destroy your undo stack (but that's simple).
For CentOS / RedHat / Fedora :
sudo yum install php-gd
For Debian/ubuntu :
sudo apt-get install php5-gd
For CentOS / RedHat / Fedora :
sudo yum install freetype*
For Debian/ubuntu :
sudo apt-get install freetype*
Don't forget to restart apache after that (if you are using apache):
CentOS / RedHat / Fedora :
sudo /etc/init.d/httpd restart
Or
sudo service httpd restart
Debian/ubuntu :
sudo /etc/init.d/apache2 restart
Or
sudo service apache2 restart
setTimeout() function it's use to delay a process in JavaScript.
w3schools has an easy tutorial about this function.
Here is my simple version. Every time you hit a key, delete all from console and draw as many '*' as the length of password string is.
int chr = 0;
string pass = "";
const int ENTER = 13;
const int BS = 8;
do
{
chr = Console.ReadKey().KeyChar;
Console.Clear(); //imediately clear the char you printed
//if the char is not 'return' or 'backspace' add it to pass string
if (chr != ENTER && chr != BS) pass += (char)chr;
//if you hit backspace remove last char from pass string
if (chr == BS) pass = pass.Remove(pass.Length-1, 1);
for (int i = 0; i < pass.Length; i++)
{
Console.Write('*');
}
}
while (chr != ENTER);
Console.Write("\n");
Console.Write(pass);
Console.Read(); //just to see the pass
Use stdint.h
for specific sizes of integer data types, and also use appropriate suffixes for integer literal constants, e.g.:
#include <stdint.h>
int64_t i2 = 0x0000444400004444LL;
If you can't write out the where clause manually to include the "or" statement (ie, you want to combine two scopes), you can use union:
Model.find_by_sql("#{Model.scope1.to_sql} UNION #{Model.scope2.to_sql}")
(source: ActiveRecord Query Union)
This is will return all records matching either query. However, this returns an array, not an arel. If you really want to return an arel, you checkout this gist: https://gist.github.com/j-mcnally/250eaaceef234dd8971b.
This will do the job, as long as you don't mind monkey patching rails.
Let's me give a more detail example. As to the below struct:
struct Count{
uint32_t c;
Count(uint32_t i=0):c(i){}
uint32_t getCount(){
return c;
}
uint32_t add(const Count& count){
uint32_t total = c + count.getCount();
return total;
}
};
As you see the above, the IDE(CLion), will give tips Non-const function 'getCount' is called on the const object
. In the method add
count
is declared as const object, but the method getCount
is not const method, so count.getCount()
may change the members in count
.
Compile error as below(core message in my compiler):
error: passing 'const xy_stl::Count' as 'this' argument discards qualifiers [-fpermissive]
To solve the above problem, you can:
uint32_t getCount(){...}
to uint32_t getCount() const {...}
. So count.getCount()
won't change the members in count
.or
uint32_t add(const Count& count){...}
to uint32_t add(Count& count){...}
. So count
don't care about changing members in it.As to you problem, objects in the std::set are stored as const StudentT, but the method getId
and getName
are not const, so you give the above error.
You can also see this question Meaning of 'const' last in a function declaration of a class? for more detail.
Also note the distinction between line (or perhaps physical line) and screen line. A line is terminated by the End Of Line character ("\n"). A screen line is whatever happens to be shown as one row of characters in your terminal or in your screen. The two come apart if you have physical lines longer than the screen width, which is very common when writing emails and such.
The distinction shows up in the end-of-line commands as well.
If you always prefer the latter behavior, you can remap the keys like this:
:noremap 0 g0
:noremap $ g$
First, lets extend the string object. Thanks to Ricardo Peres for the prototype, I think using the variable 'string' works better than 'needle' in the context of making it more readable.
String.prototype.beginsWith = function (string) {
return(this.indexOf(string) === 0);
};
Then you use it like this. Caution! Makes the code extremely readable.
var pathname = window.location.pathname;
if (pathname.beginsWith('/sub/1')) {
// Do stuff here
}
When using Marc Gravells protobuf-net as your serializer the accepted answer needs some slight modifications, as the object to copy won't be attributed with [Serializable]
and, therefore, isn't serializable and the Clone-method will throw an exception.
I modified it to work with protobuf-net:
public static T Clone<T>(this T source)
{
if(Attribute.GetCustomAttribute(typeof(T), typeof(ProtoBuf.ProtoContractAttribute))
== null)
{
throw new ArgumentException("Type has no ProtoContract!", "source");
}
if(Object.ReferenceEquals(source, null))
{
return default(T);
}
IFormatter formatter = ProtoBuf.Serializer.CreateFormatter<T>();
using (Stream stream = new MemoryStream())
{
formatter.Serialize(stream, source);
stream.Seek(0, SeekOrigin.Begin);
return (T)formatter.Deserialize(stream);
}
}
This checks for the presence of a [ProtoContract]
attribute and uses protobufs own formatter to serialize the object.
>>> import time
>>> print(time.strftime('%a %H:%M:%S'))
Mon 06:23:14
library(matrixStats)
> data <- rbind(c("M", "F", "M"), c("Student", "Analyst", "Analyst"))
> rowCounts(data, value = 'M') # output = 2 0
> rowCounts(data, value = 'F') # output = 1 0
I got this error for Mantle Framework in my Objective-Swift Project. What i tried is ,
Toggle between Private Membership first build the project , end up with errors. Then build the project with Public Membership for all the frameworks appeared for Mantle.h file, you must get success.
It is just a bug of building with multiple framework in Objective-C Swift project.
$dir = 'your/directory/';
foreach(glob($dir.'*.*') as $v){
unlink($v);
}
If this is for an intranet application and all of the clients use DHCP, you can query the DHCP server for the MAC address for a given IP address.
Figure out the full file path to the assembly you're trying to work with
Press the start button, type "dev". Launch the program called "Developer Command Prompt for VS 2017"
In the window that opens, type dumpbin /dependents [path]
, where [path]
is the path you figured out in step 1
press the enter key
Bam, you've got your dependency information. The window should look like this:
Update for VS 2019: you need this package in your VS installation:
SHOW SESSION VARIABLES LIKE "wait_timeout"; -- 28800
SHOW GLOBAL VARIABLES LIKE "wait_timeout"; -- 28800
At first, wait_timeout = 28800 which is the default value. To change the session value, you need to set the global variable because the session variable is read-only.
SET @@GLOBAL.wait_timeout=300
After you set the global variable, the session variable automatically grabs the value.
SHOW SESSION VARIABLES LIKE "wait_timeout"; -- 300
SHOW GLOBAL VARIABLES LIKE "wait_timeout"; -- 300
Next time when the server restarts, the session variables will be set to the default value i.e. 28800.
P.S. I m using MySQL 5.6.16
On my windows installation, I get these results:
>>> import sys
>>> sys.executable
'C:\\Python26\\python.exe'
>>> sys.platform
'win32'
>>>
(You can also look in sys.path
for reasonable locations.)
Short answer is:
junk$nm[junk$nm %in% "B"] <- "b"
Take a look at Index vectors in R Introduction (if you don't read it yet).
EDIT. As noticed in comments this solution works for character vectors so fail on your data.
For factor best way is to change level:
levels(junk$nm)[levels(junk$nm)=="B"] <- "b"
For me, it worked,
final String basicAuth = "Basic " + Base64.encodeToString("user:password".getBytes(), Base64.NO_WRAP);
Apache HttpCLient:
request.setHeader("Authorization", basicAuth);
HttpUrlConnection:
connection.setRequestProperty ("Authorization", basicAuth);
Since you are using bash, you don't need to create a child process for doing this. Here is one solution which performs it entirely within bash:
[[ $TEST =~ ^(.*):\ +(.*)$ ]] && TEST=${BASH_REMATCH[1]}:${BASH_REMATCH[2]}
Explanation: The groups before and after the sequence "colon and one or more spaces" are stored by the pattern match operator in the BASH_REMATCH array.
Building on the previous answers (pun intended), an excellent real-world example is Groovy's built in support for Builders
.
MarkupBuilder
StreamingMarkupBuilder
SwingXBuilder
See Builders in the Groovy Documentation
If both application have the same signature (meaning that both APPS are yours and signed with the same key), you can call your other app activity as follows:
Intent LaunchIntent = getActivity().getPackageManager().getLaunchIntentForPackage(CALC_PACKAGE_NAME);
startActivity(LaunchIntent);
Hope it helps.
In the <tomcat-home>\conf\catalina.properties
file, add this new line:
spring.profiles.active=dev
If anyone wonders how to quickly query catalog tables and make use of the pg_get_functiondef()
function here's the sample query:
SELECT n.nspname AS schema
,proname AS fname
,proargnames AS args
,t.typname AS return_type
,d.description
,pg_get_functiondef(p.oid) as definition
-- ,CASE WHEN NOT p.proisagg THEN pg_get_functiondef(p.oid)
-- ELSE 'pg_get_functiondef() can''t be used with aggregate functions'
-- END as definition
FROM pg_proc p
JOIN pg_type t
ON p.prorettype = t.oid
LEFT OUTER
JOIN pg_description d
ON p.oid = d.objoid
LEFT OUTER
JOIN pg_namespace n
ON n.oid = p.pronamespace
WHERE NOT p.proisagg
AND n.nspname~'<$SCHEMA_NAME_PATTERN>'
AND proname~'<$FUNCTION_NAME_PATTERN>'
Google play store provides closed testing track
to test your application with a limited set of testers pre-defined in the tester's list known as Alpha Testing
. Here are some important things to be considered to use alpha testing.
Important
After publishing an alpha/beta app for the first time, it may take a few hours for your test link to be available to testers. If you publish additional changes, they may take several hours to be available for testers
CSV
file to bulk add and remove. The list of defined email addresses will be eligible for testing the app, here you can a control whom to provide the app for testing. Hence, this is known as Closed Testing
.YOUR PACKAGE NAME
stagged roll-out
. In stagged roll-out, the publisher publishes by the percentage of users, to better analyze the user response.Alpha Country Availability
. It gives more precise control over testers.This question is now a bit old... but I'll throw my hat into the ring.
I personally find an algorithm of the form find_paths[s, t, d, k]
useful, where:
Using your programming language's form of infinity for d
and k
will give you all paths§.
§ obviously if you are using a directed graph and you want all undirected paths between s
and t
you will have to run this both ways:
find_paths[s, t, d, k] <join> find_paths[t, s, d, k]
I personally like recursion, although it can difficult some times, anyway first lets define our helper function:
def find_paths_recursion(graph, current, goal, current_depth, max_depth, num_paths, current_path, paths_found)
current_path.append(current)
if current_depth > max_depth:
return
if current == goal:
if len(paths_found) <= number_of_paths_to_find:
paths_found.append(copy(current_path))
current_path.pop()
return
else:
for successor in graph[current]:
self.find_paths_recursion(graph, successor, goal, current_depth + 1, max_depth, num_paths, current_path, paths_found)
current_path.pop()
With that out of the way, the core function is trivial:
def find_paths[s, t, d, k]:
paths_found = [] # PASSING THIS BY REFERENCE
find_paths_recursion(s, t, 0, d, k, [], paths_found)
First, lets notice a few thing:
[]
is an uninitialized list, replace this with the equivalent for your programming language of choicepaths_found
is passed by reference. It is clear that the recursion function doesn't return anything. Handle this appropriately.graph
is assuming some form of hashed
structure. There are a plethora of ways to implement a graph. Either way, graph[vertex]
gets you a list of adjacent vertices in a directed graph - adjust accordingly.Consider an example,
class Animal {
public void eat(String str) {
System.out.println("Eating for grass");
}
}
class Goat extends Animal {
public void eat(String str) {
System.out.println("blank");
}
}
class Another extends Goat{
public void eat(String str) {
System.out.println("another");
}
}
public class InheritanceSample {
public static void main(String[] args) {
Animal a = new Animal();
Another t5 = (Another) new Goat();
}
}
At Another t5 = (Another) new Goat()
: you will get a ClassCastException
because you cannot create an instance of the Another
class using Goat
.
Note: The conversion is valid only in cases where a class extends a parent class and the child class is casted to its parent class.
How to deal with the ClassCastException
:
You can use functors if you want a less generic and more precise control under the hood. Example with my win32 api to forward api message from a class to another class.
#include <windows.h>
class IListener {
public:
virtual ~IListener() {}
virtual LRESULT operator()(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) = 0;
};
#include "IListener.h"
template <typename D> class Listener : public IListener {
public:
typedef LRESULT (D::*WMFuncPtr)(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
private:
D* _instance;
WMFuncPtr _wmFuncPtr;
public:
virtual ~Listener() {}
virtual LRESULT operator()(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) override {
return (_instance->*_wmFuncPtr)(hWnd, uMsg, wParam, lParam);
}
Listener(D* instance, WMFuncPtr wmFuncPtr) {
_instance = instance;
_wmFuncPtr = wmFuncPtr;
}
};
#include <map>
#include "Listener.h"
class Dispatcher {
private:
//Storage map for message/pointers
std::map<UINT /*WM_MESSAGE*/, IListener*> _listeners;
public:
virtual ~Dispatcher() { //clear the map }
//Return a previously registered callable funtion pointer for uMsg.
IListener* get(UINT uMsg) {
typename std::map<UINT, IListener*>::iterator itEvt;
if((itEvt = _listeners.find(uMsg)) == _listeners.end()) {
return NULL;
}
return itEvt->second;
}
//Set a member function to receive message.
//Example Button->add<MyClass>(WM_COMMAND, this, &MyClass::myfunc);
template <typename D> void add(UINT uMsg, D* instance, typename Listener<D>::WMFuncPtr wmFuncPtr) {
_listeners[uMsg] = new Listener<D>(instance, wmFuncPtr);
}
};
class Button {
public:
Dispatcher _dispatcher;
//button window forward all received message to a listener
LRESULT onMessage(HWND hWnd, UINT uMsg, WPARAM w, LPARAM l) {
//to return a precise message like WM_CREATE, you have just
//search it in the map.
return _dispatcher[uMsg](hWnd, uMsg, w, l);
}
};
class Myclass {
Button _button;
//the listener for Button messages
LRESULT button_listener(HWND hWnd, UINT uMsg, WPARAM w, LPARAM l) {
return 0;
}
//Register the listener for Button messages
void initialize() {
//now all message received from button are forwarded to button_listener function
_button._dispatcher.add(WM_CREATE, this, &Myclass::button_listener);
}
};
Good luck and thank to all for sharing knowledge.
Maybe can help to check that the path to the xsd file has not 'strange' characters like 'é', or similar: I was having the same issue but when I changed to a path without the 'é' the error dissapeared.
File
\ Other Settings
\ Default Project Structure...
Project
tab, section Project language level
, choose level from dropdown list, this setting is default for all new project
.Try this, just an example:
u.UserTypeOptions = new SelectList(new[]
{
new { ID="1", Name="name1" },
new { ID="2", Name="name2" },
new { ID="3", Name="name3" },
}, "ID", "Name", 1);
Or
u.UserTypeOptions = new SelectList(new List<SelectListItem>
{
new SelectListItem { Selected = true, Text = string.Empty, Value = "-1"},
new SelectListItem { Selected = false, Text = "Homeowner", Value = "2"},
new SelectListItem { Selected = false, Text = "Contractor", Value = "3"},
},"Value","Text");
Add .toUpperCase()
after referrer
. This method turns the string into an upper case string. Then, use .indexOf()
using RAL
instead of Ral
.
if (referrer.toUpperCase().indexOf("RAL") === -1) {
The same can also be achieved using a Regular Expression (especially useful when you want to test against dynamic patterns):
if (!/Ral/i.test(referrer)) {
// ^i = Ignore case flag for RegExp
There is more than one type of UUID, so "how safe" depends on which type (which the UUID specifications call "version") you are using.
Version 1 is the time based plus MAC address UUID. The 128-bits contains 48-bits for the network card's MAC address (which is uniquely assigned by the manufacturer) and a 60-bit clock with a resolution of 100 nanoseconds. That clock wraps in 3603 A.D. so these UUIDs are safe at least until then (unless you need more than 10 million new UUIDs per second or someone clones your network card). I say "at least" because the clock starts at 15 October 1582, so you have about 400 years after the clock wraps before there is even a small possibility of duplications.
Version 4 is the random number UUID. There's six fixed bits and the rest of the UUID is 122-bits of randomness. See Wikipedia or other analysis that describe how very unlikely a duplicate is.
Version 3 is uses MD5 and Version 5 uses SHA-1 to create those 122-bits, instead of a random or pseudo-random number generator. So in terms of safety it is like Version 4 being a statistical issue (as long as you make sure what the digest algorithm is processing is always unique).
Version 2 is similar to Version 1, but with a smaller clock so it is going to wrap around much sooner. But since Version 2 UUIDs are for DCE, you shouldn't be using these.
So for all practical problems they are safe. If you are uncomfortable with leaving it up to probabilities (e.g. your are the type of person worried about the earth getting destroyed by a large asteroid in your lifetime), just make sure you use a Version 1 UUID and it is guaranteed to be unique (in your lifetime, unless you plan to live past 3603 A.D.).
So why doesn't everyone simply use Version 1 UUIDs? That is because Version 1 UUIDs reveal the MAC address of the machine it was generated on and they can be predictable -- two things which might have security implications for the application using those UUIDs.
SHOW FULL PROCESSLIST
If you don't use FULL
, "only the first 100 characters of each statement are shown in the Info
field".
When using phpMyAdmin, you should also click on the "Full texts" option ("? T ?" on top left corner of a results table) to see untruncated results.
For SQLite use the RowID property to make the update:
update Table set column = 'NewValue'
where RowID =
(select t1.RowID from Table t1
join Table2 t2 on t1.JoinField = t2.JoinField
where t2.SelectValue = 'FooMyBarPlease');
I'm a total noob, I came here to figure out VB's 'not equal to' syntax, so I figured I'd throw it in here in case someone else needed it:
<%If Not boolean_variable%>Do this if boolean_variable is false<%End If%>
DECLARE @d char(8)
SET @d = '06082020' /* MMDDYYYY means June 8. 2020 */
SELECT CAST(FORMAT (CAST (@d AS INT), '##/##/####') as DATETIME)
Result returned is the original date string in @d as a DateTime.
You don't need JDK
to run Java based programs. JDK
is for development which stands for Java Development Kit
.
You need JRE
which should be there in Mac.
Try: java -jar Myjar_file.jar
EDIT: According to this article, for Mac OS 10
The Java runtime is no longer installed automatically as part of the OS installation.
Then, you need to install JRE to your machine.
You guys are forgetting that the colon is also used in the ternary operator (though I don't know if jquery uses it for this purpose).
the ternary operator is an expression form (expressions return a value) of an if/then statement. it's used like this:
var result = (condition) ? (value1) : (value2) ;
A ternary operator could also be used to produce side effects just like if/then, but this is profoundly bad practice.
gc()
can help
saving data as .RData, closing, re-opening R, and loading the RData can help.
see my answer here: https://stackoverflow.com/a/24754706/190791 for more details
Edit: copyitright has pointed out that this is unreliable. Approving read access with UAC will allow dir to succeed. I have a bit more script to offer another possibility, but it's not read-only.
reg query "HKLM\SOFTWARE\Foo" >NUL 2>NUL && goto :error_key_exists
reg add "HKLM\SOFTWARE\Foo" /f >NUL 2>NUL || goto :error_not_admin
reg delete "HKLM\SOFTWARE\Foo" /f >NUL 2>NUL || goto :error_failed_delete
goto :success
:error_failed_delete
echo Error unable to delete test key
exit /b 3
:error_key_exists
echo Error test key exists
exit /b 2
:error_not_admin
echo Not admin
exit /b 1
:success
echo Am admin
Old answer below
Warning: unreliable
Based on a number of other good answers here and points brought up by and31415 I found that I am a fan of the following:
dir "%SystemRoot%\System32\config\DRIVERS" 2>nul >nul || echo Not Admin
Few dependencies and fast.
onunload is the answer. Crossbrowser too.
window.onunload = function(){
alert("The window is closing now!");
}
onunload executes only on page close:
These events fire when the window is unloading its content and resources.
I tested it on chrome, it doesn't execute even on page refresh and on navigating to a different page.
The alert may not display because of how javascript executes code.. but it will definitely hit the code.
None of the other answers worked in my case, most likely because the JSON array contained special characters. What fixed it for me:
Javascript (added encodeURIComponent)
var JSONstr = encodeURIComponent(JSON.stringify(fullInfoArray));
document.getElementById('JSONfullInfoArray').value = JSONstr;
PHP (unchanged from the question)
$data = json_decode($_POST["JSONfullInfoArray"]);
var_dump($data);
echo($_POST["JSONfullInfoArray"]);
Both echo and var_dump have been verified to work fine on a sample of more than 2000 user-entered datasets that included a URL field and a long text field, and that were returning NULL on var_dump for a subset that included URLs with the characters ?&#
.
package main
import "encoding/json"
func main() {
in := []byte(`{ "votes": { "option_A": "3" } }`)
var raw map[string]interface{}
if err := json.Unmarshal(in, &raw); err != nil {
panic(err)
}
raw["count"] = 1
out, err := json.Marshal(raw)
if err != nil {
panic(err)
}
println(string(out))
}
That message is usually an indication that some of your files have modification times later than the current system time. Since make
decides which files to compile when performing an incremental build by checking if a source files has been modified more recently than its object file, this situation can cause unnecessary files to be built, or worse, necessary files to not be built.
However, if you are building from scratch (not doing an incremental build) you can likely ignore this warning without consequence.
The skipping elements bug in this (code from above)
var len = cells.length;
for(var i = 0; i < len; i++) {
if(cells[i].className.toLowerCase() == "column") {
cells[i].parentNode.removeChild(cells[i]);
}
}
can be fixed by just running the loop backwards as follows (so that the temporary array is not needed)
var len = cells.length;
for(var i = len-1; i >-1; i--) {
if(cells[i].className.toLowerCase() == "column") {
cells[i].parentNode.removeChild(cells[i]);
}
}
The line function implementation should be:
void addStudent(struct student person) {
}
person
is not a type but a variable, you cannot use it as the type of a function parameter.
Also, make sure your struct is defined before the prototype of the function addStudent
as the prototype uses it.
There is a very easy and convenient way to handle the problem without any extra comparator. Just code the modified date into the String with the filename, sort it, and later strip it off again.
Use a String of fixed length 20, put the modified date (long) into it, and fill up with leading zeros. Then just append the filename to this string:
String modified_20_digits = ("00000000000000000000".concat(Long.toString(temp.lastModified()))).substring(Long.toString(temp.lastModified()).length());
result_filenames.add(modified_20_digits+temp.getAbsoluteFile().toString());
What happens is this here:
Filename1: C:\data\file1.html Last Modified:1532914451455 Last Modified 20 Digits:00000001532914451455
Filename1: C:\data\file2.html Last Modified:1532918086822 Last Modified 20 Digits:00000001532918086822
transforms filnames to:
Filename1: 00000001532914451455C:\data\file1.html
Filename2: 00000001532918086822C:\data\file2.html
You can then just sort this list.
All you need to do is to strip the 20 characters again later (in Java 8, you can strip it for the whole Array with just one line using the .replaceAll function)
You don't need to have bunch of subscriptions and unsubscribe manually. Use Subject and takeUntil combo to handle subscriptions like a boss:
import { Subject } from "rxjs"
import { takeUntil } from "rxjs/operators"
@Component({
moduleId: __moduleName,
selector: "my-view",
templateUrl: "../views/view-route.view.html"
})
export class ViewRouteComponent implements OnInit, OnDestroy {
componentDestroyed$: Subject<boolean> = new Subject()
constructor(private titleService: TitleService) {}
ngOnInit() {
this.titleService.emitter1$
.pipe(takeUntil(this.componentDestroyed$))
.subscribe((data: any) => { /* ... do something 1 */ })
this.titleService.emitter2$
.pipe(takeUntil(this.componentDestroyed$))
.subscribe((data: any) => { /* ... do something 2 */ })
//...
this.titleService.emitterN$
.pipe(takeUntil(this.componentDestroyed$))
.subscribe((data: any) => { /* ... do something N */ })
}
ngOnDestroy() {
this.componentDestroyed$.next(true)
this.componentDestroyed$.complete()
}
}
Alternative approach, which was proposed by @acumartini in comments, uses takeWhile instead of takeUntil. You may prefer it, but mind that this way your Observable execution will not be cancelled on ngDestroy of your component (e.g. when you make time consuming calculations or wait for data from server). Method, which is based on takeUntil, doesn't have this drawback and leads to immediate cancellation of request. Thanks to @AlexChe for detailed explanation in comments.
So here is the code:
@Component({
moduleId: __moduleName,
selector: "my-view",
templateUrl: "../views/view-route.view.html"
})
export class ViewRouteComponent implements OnInit, OnDestroy {
alive: boolean = true
constructor(private titleService: TitleService) {}
ngOnInit() {
this.titleService.emitter1$
.pipe(takeWhile(() => this.alive))
.subscribe((data: any) => { /* ... do something 1 */ })
this.titleService.emitter2$
.pipe(takeWhile(() => this.alive))
.subscribe((data: any) => { /* ... do something 2 */ })
// ...
this.titleService.emitterN$
.pipe(takeWhile(() => this.alive))
.subscribe((data: any) => { /* ... do something N */ })
}
ngOnDestroy() {
this.alive = false
}
}
Should be in
Program Files>Microsoft SQL Server>MSSQL 1.0>MSSQL>BACKUP>
In my case it is
C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\Backup
If you use the gui or T-SQL you can specify where you want it T-SQL example
BACKUP DATABASE [YourDB] TO DISK = N'SomePath\YourDB.bak'
WITH NOFORMAT, NOINIT, NAME = N'YourDB Full Database Backup',
SKIP, NOREWIND, NOUNLOAD, STATS = 10
GO
With T-SQL you can also get the location of the backup, see here Getting the physical device name and backup time for a SQL Server database
SELECT physical_device_name,
backup_start_date,
backup_finish_date,
backup_size/1024.0 AS BackupSizeKB
FROM msdb.dbo.backupset b
JOIN msdb.dbo.backupmediafamily m ON b.media_set_id = m.media_set_id
WHERE database_name = 'YourDB'
ORDER BY backup_finish_date DESC
var events = [event_1, event_2,event_3] // your events
//make a for loop of your events and remove them all in a single instance
for (let i in events){
canvas_1.removeEventListener("mousedown", events[i], false)
}
Visual Studio Code has really nice Node.js debugging support. It is free, open source and cross-platform and runs on Linux, OS X and Windows.
You can even debug grunt and gulp tasks, should you need to...
Some might find a different kind of input useful: I was given this method of measuring time as part of a university course on GPGPU-programming with NVidia CUDA (course description). It combines methods seen in earlier posts, and I simply post it because the requirements give it credibility:
unsigned long int elapsed;
struct timeval t_start, t_end, t_diff;
gettimeofday(&t_start, NULL);
// perform computations ...
gettimeofday(&t_end, NULL);
timeval_subtract(&t_diff, &t_end, &t_start);
elapsed = (t_diff.tv_sec*1e6 + t_diff.tv_usec);
printf("GPU version runs in: %lu microsecs\n", elapsed);
I suppose you could multiply with e.g. 1.0 / 1000.0
to get the unit of measurement that suits your needs.
I've found the answer (by further examining the Sublime 2 config files structure):
I was to open
~/.config/sublime-text-2/Packages/Scala/Scala.tmLanguage
And edit it to add sbt
(the extension of files I want to be opened as Scala code files) to the array after the fileTypes
key:
<dict>
<key>bundleUUID</key>
<string>452017E8-0065-49EF-AB9D-7849B27D9367</string>
<key>fileTypes</key>
<array>
<string>scala</string>
<string>sbt</string>
<array>
...
PS: May there be a better way, something like a right place to put my customizations (insted of modifying packages themselves), I'd still like to know.
If you mean "Can I use the stylistic presentation of Bootstrap in an email?" then you can, though I don't know anybody that has done it yet. You'll need to recode everything in tables though.
If you are after functionality, it depends on where your emails are viewed. If a significant proportion of your users are on Outlook, Gmail, Yahoo or Hotmail (and these typically add up to around 75% of email clients) then a lot of Bootstrap's goodness is not possible. Mac Mail, iOS Mail and Gmail on Android are much better at rendering CSS, so if you are targeting mostly mobile devices it's not quite so bad.
font-face
- you can only use external images. All other external resources (CSS files, fonts) are excluded. :hover
, :active
states cannot be styled separatelyThere are loads of answers on SO, and lots of other links on the internet at large.
resourcesloader.class.getClass()
Can be broken down to:
Class<resourcesloader> clazz = resourceloader.class;
Class<Class> classClass = clazz.getClass();
Which means you're trying to load the resource using a bootstrap class.
Instead you probably want something like:
resourcesloader.class.getResource("repository/SSL-Key/cert.jks").toString()
If only javac warned about calling static methods on non-static contexts...
This happened to me when deleting some Equinox package from my plugins
directory, make sure this is not the case.
I wrote a class assigning typeface to the views in the current view hierarchy and based os the current typeface properties (bold, normal, you can add other styles if you want):
public final class TypefaceAssigner {
public final Typeface DEFAULT;
public final Typeface DEFAULT_BOLD;
@Inject
public TypefaceAssigner(AssetManager assetManager) {
DEFAULT = Typeface.createFromAsset(assetManager, "TradeGothicLTCom.ttf");
DEFAULT_BOLD = Typeface.createFromAsset(assetManager, "TradeGothicLTCom-Bd2.ttf");
}
public void assignTypeface(View v) {
if (v instanceof ViewGroup) {
for (int i = 0; i < ((ViewGroup) v).getChildCount(); i++) {
View view = ((ViewGroup) v).getChildAt(i);
if (view instanceof ViewGroup) {
setTypeface(view);
} else {
setTypeface(view);
}
}
} else {
setTypeface(v);
}
}
private void setTypeface(View view) {
if (view instanceof TextView) {
TextView textView = (TextView) view;
Typeface typeface = textView.getTypeface();
if (typeface != null && typeface.isBold()) {
textView.setTypeface(DEFAULT_BOLD);
} else {
textView.setTypeface(DEFAULT);
}
}
}
}
Now in all fragments in onViewCreated or onCreateView, in all activities in onCreate and in all view adapters in getView or newView just invoke:
typefaceAssigner.assignTypeface(view);
I know this is an old question but I just found a solution which creates a user defined function using LTRIM and RTRIM. It does not handle double spaces in the middle of a string.
The solution is however straight forward:
dic0.update(dic1)
Note this doesn't actually return the combined dictionary, it just mutates dic0
.
Update for Swift 3.0 and higher
let actionSheetController: UIAlertController = UIAlertController(title: "SomeTitle", message: nil, preferredStyle: .actionSheet)
let editAction: UIAlertAction = UIAlertAction(title: "Edit Details", style: .default) { action -> Void in
print("Edit Details")
}
let deleteAction: UIAlertAction = UIAlertAction(title: "Delete Item", style: .default) { action -> Void in
print("Delete Item")
}
let cancelAction: UIAlertAction = UIAlertAction(title: "Cancel", style: .cancel) { action -> Void in }
actionSheetController.addAction(editAction)
actionSheetController.addAction(deleteAction)
actionSheetController.addAction(cancelAction)
// present(actionSheetController, animated: true, completion: nil) // doesn't work for iPad
actionSheetController.popoverPresentationController?.sourceView = yourSourceViewName // works for both iPhone & iPad
present(actionSheetController, animated: true) {
print("option menu presented")
}
There are significant differences. Let's set up some test cases:
var unused; // value will be undefined
Test("test1", "some value");
Test("test2");
Test("test3", unused);
Test("test4", null);
Test("test5", 0);
Test("test6", "");
With the first method you describe, only the second test will use the default value. The second method will default all but the first (as JS will convert undefined
, null
, 0
, and ""
into the boolean false
. And if you were to use Tom's method, only the fourth test will use the default!
Which method you choose really depends on your intended behavior. If values other than undefined
are allowable for argument2
, then you'll probably want some variation on the first; if a non-zero, non-null, non-empty value is desired, then the second method is ideal - indeed, it is often used to quickly eliminate such a wide range of values from consideration.
You can always use a properly formatted string. The trick is the formatting.
command.Parameters.Add("@array_parameter", string.Format("{{{0}}}", string.Join(",", array));
Note that if your array is an array of strings, then you'll need to use array.Select(value => string.Format("\"{0}\", value)) or the equivalent. I use this style for an array of an enumerated type in PostgreSQL, because there's no automatic conversion from the array.
In my case, my enumerated type has some values like 'value1', 'value2', 'value3', and my C# enumeration has matching values. In my case, the final SQL query ends up looking something like (E'{"value1","value2"}'), and this works.
static T DeserializeXml<T>(string sourceXML) where T : class
{
var serializer = new XmlSerializer(typeof(T));
T result = null;
using (TextReader reader = new StringReader(sourceXML))
{
result = (T) serializer.Deserialize(reader);
}
return result;
}
DEPRECATION WARNING: Using #request_uri is deprecated. Use fullpath instead.
The solution for the error is to add this line at the top of the code:
process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";
Yes you can. I have installed a complete Debian distribution in a chroot-jail enviroment using debootstrap. (You need a rooted device) I am now running ssh, apache, mysql, php and even a samba server under android on my htc-desire with no problems. It is possible to run x applications using a remote x server via ssh. It even runs openoffice.org and firefox. You can use this: http://code.google.com/p/android-xserver/ to run X-application on localhost but my HTC-desire has a to small screen to be productive :-) But it might be usefull on a Eee Pad Transformer or something like that.
You can factor out your common logic to a private method, for example called Initialize
that gets called from both constructors.
Due to the fact that you want to perform argument validation you cannot resort to constructor chaining.
Example:
public Point2D(double x, double y)
{
// Contracts
Initialize(x, y);
}
public Point2D(Point2D point)
{
if (point == null)
throw new ArgumentNullException("point");
// Contracts
Initialize(point.X, point.Y);
}
private void Initialize(double x, double y)
{
X = x;
Y = y;
}
If you really want to use Deleted, you'd have to make your foreign keys nullable, but then you'd end up with orphaned records (which is one of the main reasons you shouldn't be doing that in the first place). So just use Remove()
ObjectContext.DeleteObject(entity) marks the entity as Deleted in the context. (It's EntityState is Deleted after that.) If you call SaveChanges afterwards EF sends a SQL DELETE statement to the database. If no referential constraints in the database are violated the entity will be deleted, otherwise an exception is thrown.
EntityCollection.Remove(childEntity) marks the relationship between parent and childEntity as Deleted. If the childEntity itself is deleted from the database and what exactly happens when you call SaveChanges depends on the kind of relationship between the two:
A thing worth noting is that setting .State = EntityState.Deleted
does not trigger automatically detected change. (archive)
Swift 4:
I was getting this error because of a change in the UIVisualEffectView api. In Swift 3 it was ok to do this:
myVisuallEffectView.addSubview(someSubview)
But in Swift 4 I had to change it to this:
myVisualEffectView.contentView.addSubview(someSubview)
In Android Studio 3 and above You Can See a "Device File Explorer" Section in Right-Bottom Side of Android Studio.
Open it, Then You Can See The File Tree, You Can Find an Application Databases In this Path:
/data/data/{package_name}/databases/
'Caret' is the word you are looking for. I do believe though, that it is part of the browsers design, and not within the grasp of css.
However, here is an interesting write up on simulating a caret change using Javascript and CSS http://www.dynamicdrive.com/forums/showthread.php?t=17450 It seems a bit hacky to me, but probably the only way to accomplish the task. The main point of the article is:
We will have a plain textarea somewhere in the screen out of the view of the viewer and when the user clicks on our "fake terminal" we will focus into the textarea and when the user starts typing we will simply append the data typed into the textarea to our "terminal" and that's that.
HERE is a demo in action
There is a new css property caret-color
which applies to the caret of an input
or contenteditable
area. The support is growing but not 100%, and this only affects color, not width or other types of appearance.
input{_x000D_
caret-color: rgb(0, 200, 0);_x000D_
}
_x000D_
<input type="text"/>
_x000D_
I would use the back-tick ``.
let name1 = 'Geoffrey';
let msg1 = `Hello ${name1}`;
console.log(msg1); // 'Hello Geoffrey'
But if you don't know name1
when you create msg1
.
For exemple if msg1
came from an API.
You can use :
let name2 = 'Geoffrey';
let msg2 = 'Hello ${name2}';
console.log(msg2); // 'Hello ${name2}'
const regexp = /\${([^{]+)}/g;
let result = msg2.replace(regexp, function(ignore, key){
return eval(key);
});
console.log(result); // 'Hello Geoffrey'
It will replace ${name2}
with his value.
You don't want to stretch the span in height?
You have the possiblity to affect one or more flex-items to don't stretch the full height of the container.
To affect all flex-items of the container, choose this:
You have to set align-items: flex-start;
to div
and all flex-items of this container get the height of their content.
div {_x000D_
align-items: flex-start;_x000D_
background: tan;_x000D_
display: flex;_x000D_
height: 200px;_x000D_
}_x000D_
span {_x000D_
background: red;_x000D_
}
_x000D_
<div>_x000D_
<span>This is some text.</span>_x000D_
</div>
_x000D_
To affect only a single flex-item, choose this:
If you want to unstretch a single flex-item on the container, you have to set align-self: flex-start;
to this flex-item. All other flex-items of the container aren't affected.
div {_x000D_
display: flex;_x000D_
height: 200px;_x000D_
background: tan;_x000D_
}_x000D_
span.only {_x000D_
background: red;_x000D_
align-self:flex-start;_x000D_
}_x000D_
span {_x000D_
background:green;_x000D_
}
_x000D_
<div>_x000D_
<span class="only">This is some text.</span>_x000D_
<span>This is more text.</span>_x000D_
</div>
_x000D_
Why is this happening to the span
?
The default value of the property align-items
is stretch
. This is the reason why the span
fill the height of the div
.
Difference between baseline
and flex-start
?
If you have some text on the flex-items, with different font-sizes, you can use the baseline of the first line to place the flex-item vertically. A flex-item with a smaller font-size have some space between the container and itself at top. With flex-start
the flex-item will be set to the top of the container (without space).
div {_x000D_
align-items: baseline;_x000D_
background: tan;_x000D_
display: flex;_x000D_
height: 200px;_x000D_
}_x000D_
span {_x000D_
background: red;_x000D_
}_x000D_
span.fontsize {_x000D_
font-size:2em;_x000D_
}
_x000D_
<div>_x000D_
<span class="fontsize">This is some text.</span>_x000D_
<span>This is more text.</span>_x000D_
</div>
_x000D_
You can find more information about the difference between
baseline
andflex-start
here:
What's the difference between flex-start and baseline?
To add bouncy castle to Android project: https://mvnrepository.com/artifact/org.bouncycastle/bcprov-jdk16/1.45
Add this line in your Main Activity:
static {
Security.addProvider(new BouncyCastleProvider());
}
public class AESHelper {
private static final String TAG = "AESHelper";
public static byte[] encrypt(byte[] data, String initVector, String key) {
try {
IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
Cipher c = Cipher.getInstance("AES/CBC/PKCS5PADDING");
SecretKeySpec k = new SecretKeySpec(Base64.decode(key, Base64.DEFAULT), "AES");
c.init(Cipher.ENCRYPT_MODE, k, iv);
return c.doFinal(data);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static byte[] decrypt(byte[] data, String initVector, String key) {
try {
IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
Cipher c = Cipher.getInstance("AES/CBC/PKCS5PADDING");
SecretKeySpec k = new SecretKeySpec(Base64.decode(key, Base64.DEFAULT), "AES");
c.init(Cipher.DECRYPT_MODE, k, iv);
return c.doFinal(data);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static String keyGenerator() throws NoSuchAlgorithmException {
KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
keyGenerator.init(192);
return Base64.encodeToString(keyGenerator.generateKey().getEncoded(),
Base64.DEFAULT);
}
}
Ensure position
is on your element and set the z-index
to a value higher than the elements you want to cover.
element {
position: fixed;
z-index: 999;
}
div {
position: relative;
z-index: 99;
}
It will probably require some more work than that but it's a start since you didn't post any code.
Robi Code is work for me, just put if !null so that if phone number is null, user can fill the phone number by him/her self.
editTextPhoneNumber = (EditText) findViewById(R.id.editTextPhoneNumber);
TelephonyManager tMgr;
tMgr= (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
String mPhoneNumber = tMgr.getLine1Number();
if (mPhoneNumber != null){
editTextPhoneNumber.setText(mPhoneNumber);
}
Very simple use of any
df <- <your structure>
df$Den <- apply(df,1,function(i) {ifelse(any(is.na(i)) | any(i != 1), 0, 1)})
Not sure what the author of that code wanted to achieve. Definining a function inside another function does NOT mean that the inner function is only visible inside the outer function. After calling x() the first time, the y() function will be in global scope as well.
To delete a single element, you could do:
std::vector<int> vec;
vec.push_back(6);
vec.push_back(-17);
vec.push_back(12);
// Deletes the second element (vec[1])
vec.erase(vec.begin() + 1);
Or, to delete more than one element at once:
// Deletes the second through third elements (vec[1], vec[2])
vec.erase(vec.begin() + 1, vec.begin() + 3);
static
means that the method is associated with the class, not a specific instance (object) of that class. This means that you can call a static method without creating an object of the class.
Because of use of a static
keyword main()
is your first method to be invoked..
static
doesn't need to any object to instance...
so,main( )
is called by the Java interpreter before any objects are made.
prop.table is a nice friendly way of obtaining proportions of tables.
m <- matrix(1:4,2)
m
[,1] [,2]
[1,] 1 3
[2,] 2 4
Leaving margin blank gives you proportions of the whole table
prop.table(m, margin=NULL)
[,1] [,2]
[1,] 0.1 0.3
[2,] 0.2 0.4
Giving it 1 gives you row proportions
prop.table(m, 1)
[,1] [,2]
[1,] 0.2500000 0.7500000
[2,] 0.3333333 0.6666667
And 2 is column proportions
prop.table(m, 2)
[,1] [,2]
[1,] 0.3333333 0.4285714
[2,] 0.6666667 0.5714286
Your original code uses FileInputStream, which is for accessing file system hosted files.
The constructor you used will attempt to locate a file named a.txt in the www.somewebsite.com subfolder of the current working directory (the value of system property user.dir). The name you provide is resolved to a file using the File class.
URL objects are the generic way to solve this. You can use URLs to access local files but also network hosted resources. The URL class supports the file:// protocol besides http:// or https:// so you're good to go.
I tried the following solutions from the other answers and they didn't work:
If your repository is hosted remotely (GitHub, GitLab, BitBucket), you can rename the file on origin (GitHub.com) and force the file rename in a top-down manner.
The instructions below pertain to GitHub, however the general idea behind them should apply to any remote repository-hosting platform. Keep in mind the type of file you're attempting to rename matters, that is, whether it's a file type that GitHub deems as editable (code, text, etc) or uneditable (image, binary, etc) within the browser.
branchname
branch" radio button is selected and click the "Commit changes" buttonbranchname
branch" radio button is selected and click the "Commit changes" buttonI was also having this same problem. I developed a synchronous solution thanks to the research done by @tpeczek in the following SO article: Unable to authenticate to ASP.NET Web Api service with HttpClient
My solution uses a WebClient
, which as you correctly noted passes the credentials without issue. The reason HttpClient
doesn't work is because of Windows security disabling the ability to create new threads under an impersonated account (see SO article above.) HttpClient
creates new threads via the Task Factory thus causing the error. WebClient
on the other hand, runs synchronously on the same thread thereby bypassing the rule and forwarding its credentials.
Although the code works, the downside is that it will not work async.
var wi = (System.Security.Principal.WindowsIdentity)HttpContext.Current.User.Identity;
var wic = wi.Impersonate();
try
{
var data = JsonConvert.SerializeObject(new
{
Property1 = 1,
Property2 = "blah"
});
using (var client = new WebClient { UseDefaultCredentials = true })
{
client.Headers.Add(HttpRequestHeader.ContentType, "application/json; charset=utf-8");
client.UploadData("http://url/api/controller", "POST", Encoding.UTF8.GetBytes(data));
}
}
catch (Exception exc)
{
// handle exception
}
finally
{
wic.Undo();
}
Note: Requires NuGet package: Newtonsoft.Json, which is the same JSON serializer WebAPI uses.
You can choose filling zero data or create zero Mat.
Filling zero data with setTo():
img.setTo(Scalar::all(0));
Create zero data with zeros():
img = zeros(img.size(), img.type());
The img changes address of memory.
Use net use
or New-PSDrive
to create a new drive:
New-PsDrive: create a new PsDrive only visible in PowerShell environment:
New-PSDrive -Name Y -PSProvider filesystem -Root \\ServerName\Share
Copy-Item BigFile Y:\BigFileCopy
Net use: create a new drive visible in all parts of the OS.
Net use y: \\ServerName\Share
Copy-Item BigFile Y:\BigFileCopy
Please try below code for it :
$('#msform').fadeOut(50);
$('#msform').fadeIn(50);
Include #include <boost/version.hpp>
std::cout << "Using Boost "
<< BOOST_VERSION / 100000 << "." // major version
<< BOOST_VERSION / 100 % 1000 << "." // minor version
<< BOOST_VERSION % 100 // patch level
<< std::endl;
Possible output: Using Boost 1.75.0
Tested with Boost 1.51.0 to 1.63, 1.71.0 and 1.75.0:
The problem is that you're targeting the button, but it's the A Tag that causes the text-decoration: underline. So if you target the A tag then it should work.
a:hover, a:focus { text-decoration: none;}
You can expose the service in two different endpoints. the SOAP one can use the binding that support SOAP e.g. basicHttpBinding, the RESTful one can use the webHttpBinding. I assume your REST service will be in JSON, in that case, you need to configure the two endpoints with the following behaviour configuration
<endpointBehaviors>
<behavior name="jsonBehavior">
<enableWebScript/>
</behavior>
</endpointBehaviors>
An example of endpoint configuration in your scenario is
<services>
<service name="TestService">
<endpoint address="soap" binding="basicHttpBinding" contract="ITestService"/>
<endpoint address="json" binding="webHttpBinding" behaviorConfiguration="jsonBehavior" contract="ITestService"/>
</service>
</services>
so, the service will be available at
Apply [WebGet] to the operation contract to make it RESTful. e.g.
public interface ITestService
{
[OperationContract]
[WebGet]
string HelloWorld(string text)
}
Note, if the REST service is not in JSON, parameters of the operations can not contain complex type.
For plain old XML as return format, this is an example that would work both for SOAP and XML.
[ServiceContract(Namespace = "http://test")]
public interface ITestService
{
[OperationContract]
[WebGet(UriTemplate = "accounts/{id}")]
Account[] GetAccount(string id);
}
POX behavior for REST Plain Old XML
<behavior name="poxBehavior">
<webHttp/>
</behavior>
Endpoints
<services>
<service name="TestService">
<endpoint address="soap" binding="basicHttpBinding" contract="ITestService"/>
<endpoint address="xml" binding="webHttpBinding" behaviorConfiguration="poxBehavior" contract="ITestService"/>
</service>
</services>
Service will be available at
REST request try it in browser,
SOAP request client endpoint configuration for SOAP service after adding the service reference,
<client>
<endpoint address="http://www.example.com/soap" binding="basicHttpBinding"
contract="ITestService" name="BasicHttpBinding_ITestService" />
</client>
in C#
TestServiceClient client = new TestServiceClient();
client.GetAccount("A123");
Another way of doing it is to expose two different service contract and each one with specific configuration. This may generate some duplicates at code level, however at the end of the day, you want to make it working.
value="<?php echo htmlspecialchars($name); ?>"
You can use the below expression:
(^\d*\.?\d*[1-9]+\d*$)|(^[1-9]+\.?\d*$)
Valid entries: 1 1. 1.1 1.0 all positive real numbers
Invalid entries: all negative real numbers and 0 and 0.0
Two ways to stop running a container:
1. $docker stop container_ID
2. $docker kill container_ID
You can get running containers using the following command:
$docker ps
Following links for more information: