[java] Spring Boot - Error creating bean with name 'dataSource' defined in class path resource

I have Spring Boot web application. It's centered around RESTful approach. All configuration seems in place but for some reason MainController fails to handle request. It results in 404 error. How to fix it?

@Controller
public class MainController {

    @Autowired
    ParserService parserService;

    @RequestMapping(value="/", method= RequestMethod.GET)
    public @ResponseBody String displayStartPage(){
        return "{hello}";
    }
}

Application

@Configuration
@ComponentScan(basePackages = "")
@EnableAutoConfiguration
public class Application extends SpringBootServletInitializer{
        public static void main(final String[] args) {
            SpringApplication.run(Application.class, args);
        }

        @Override
        protected final SpringApplicationBuilder configure(final SpringApplicationBuilder application) {
            return application.sources(Application.class);
        }
}

ParserController

@RestController
public class ParserController {

    @Autowired
    private ParserService parserService;

    @Autowired
    private RecordDao recordDao;

 private static final Logger LOG = Logger.getLogger(ParserController.class);

    @RequestMapping(value="/upload", method= RequestMethod.POST)
    public @ResponseBody String fileUploadPage(
   }
}

UPDATE

Seems like MySQL cannot be initialized by Spring....

    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration': Injection of autowired dependencies failed; 

nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.dataSource; 

nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceAutoConfiguration$NonEmbeddedConfiguration.class]: Instantiation of bean failed; 

nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public javax.sql.DataSource org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration$NonEmbeddedConfiguration.dataSource()] threw exception; 

nested exception is org.springframework.beans.factory.BeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath.

UPDATE2

application.properties

spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/logparser
spring.datasource.username=root
spring.datasource.password=root

spring.jpa.database = MYSQL
spring.jpa.show-sql = true

# Hibernate
hibernate.dialect: org.hibernate.dialect.MySQL5Dialect
hibernate.show_sql: true
hibernate.hbm2ddl.auto: update
entitymanager.packagesToScan: /

UPDATE4

Seems lite controllers not responding eventhough @RequestMapping are set. Why might it be?

PS. It occurs when I run Maven's lifecycle test. When running in degub mode in IntelliJ there is no error outputted.

UPDATE5

Also I use this DAO as explained in tutorial....

public interface RecordDao extends CrudRepository<Record, Long> {
}

http://blog.netgloo.com/2014/10/27/using-mysql-in-spring-boot-via-spring-data-jpa-and-hibernate/

UPDATE6

I did changed my application properties. And tried every single combination but it refuses to work. ;(

Maven output:

-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Running IntegrationTest
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 2.365 sec <<< FAILURE! - in IntegrationTest
saveParsedRecordsToDatabase(IntegrationTest)  Time elapsed: 2.01 sec  <<< ERROR!
java.lang.IllegalStateException: Failed to load ApplicationContext
    at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:99)
    at org.springframework.test.context.DefaultTestContext.getApplicationContext(DefaultTestContext.java:101)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:331)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:213)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:290)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:292)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:233)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:87)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:176)
    at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:264)
    at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
    at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:124)
    at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
    at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
    at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.dataSource; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceAutoConfiguration$NonEmbeddedConfiguration.class]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public javax.sql.DataSource org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration$NonEmbeddedConfiguration.dataSource()] threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath.

If you're using application.properties in spring boot app, then just put the below line into application.properties and it should work:
spring.datasource.url: jdbc:mysql://google/?cloudSqlInstance=&socketFactory=com.google.cloud.sql.mysql.SocketFactory&user=****&password=****

I solved my problem with the change of the parent Spring Boot Dependency.

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.0.RELEASE</version>
</parent>

to

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.6.RELEASE</version>
</parent>

For more Information, take a look at the release notes: Spring Boot 2.1.0 Release Notes

Created database in MySQL

create database springboot2;

application.properties

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/springboot2
spring.datasource.username = root
spring.datasource.password = root
spring.jpa.show-sql = true
spring.jpa.hibernate.ddl-auto = update
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
server.port=9192

pom.xml

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

main class

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

}

model class

package com.First.Try.springboot.entity;
    
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor 
@NoArgsConstructor
@Entity
@Table(name="PRODUCT_TBL1")
public class Product {
    @Id
    @GeneratedValue
    private int id;
    private String name;
    private int quantity;
    private double price;
    ....
    ....
    ....
 }

Give you something different, when you encounter this kind of error, cannot create bean datasource in a test case.

It might be caused by some reasons:

1. No datasource, you will need to create your datasource, h2 in-memory datasource or whatever, or you can choose the way like exclude={datasource··}.
2. You have your datasource, like MySQL, but it still not work. It was caused by class AutoConfigureTestDatabase, It will choose a datasource for you which may cause ambiguity.

Solution: add @AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE) to avoid replace the default datasource.

This problem comes while you are running Test. Add dependency

testCompile group: 'com.h2database', name: 'h2', version: '1.4.197' 

Add folder resources under test source add file bootstrap.yml and provide content.

spring:
  datasource:
    type: com.zaxxer.hikari.HikariDataSource
    url: jdbc:h2:mem:TEST
    driver-class-name: org.h2.Driver
    username: username
    password: password
    hikari:
      idle-timeout: 10000

this will setup your data source.

I was getting the same error, found out it was due to some of the dependencies missing in my pom.xml like that of Spring JPA, Hibernate, Mysql or maybe Jackson. So make sure that dependencies are not missing in your pom.xml and check their version compatibility.

<!-- Jpa and hibernate -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-orm</artifactId>
    <version>4.2.2.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-entitymanager</artifactId>
    <version>5.0.3.Final</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.6</version>
</dependency>

Are you running the application as a jar? ( java -jar xxxx.jar)

If so, do you have the application.properties stored in that jar ?

If no, try to figure out why :

• To be automatically package in the jar, the files can be in : src/main/resources/application.properties
• The maven plugin in the pom.xml can also be configured

I was facing the same problem for several days, and finally the issue isn't with the code, the problem commes from maven, you must delete all the files that he downloaded from your hard drive "C:\Users\username.m2\repository", and do another update maven for your project, that will fix your problem.

From the looks of things you haven't passed enough data to Spring Boot to configure the datasource

Create/In your existing application.properties add the following

spring.datasource.driverClassName=
spring.datasource.url=
spring.datasource.username=
spring.datasource.password=

making sure you append a value for each of properties.

In my case this was happening because org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.dataSource is an autowired field without a Qualifier and I am using multiple datasources with qualified names. I solved this problem by using @Primary arbitrarily on one of my dataSource bean configurations like so

@Primary
@Bean(name="oneOfManyDataSources")
public DataSource dataSource() { ... }

I suppose they want you to implement AbstractRoutingDataSource, and then that auto configuration will just work because no qualifier is needed, you just have a single data source that allows your beans to resolve to the appropriate DataSource as needed. Then you don't need the @Primary or @Qualifier annotations at all, because you just have a single DataSource.

In any case, my solution worked because my beans specify DataSource by qualifier, and the JPA auto config stuff is happy because it has a single primary DataSource. I am by no means recommending this as the "right" way to do things, but in my case it solved the problem quickly and did not deter the behavior of my application in any noticeable manner. Will hopefully one day get around to implementing the AbstractRoutingDataSource and refactoring all the beans that need a specific DataSource and then perhaps that will be a neater solution.

Check that you have database dependency at runtime group at build.gradle

runtime group: 'com.h2database', name: 'h2', version: '1.4.194'

or change scope from test to runtime if you use Maven

<dependency>
    <groupId>com.h2database</groupId>
    <artifactId>h2</artifactId>
    <version>1.4.194</version>
    <scope>runtime</scope>
</dependency>

change below line of code

spring.datasource.driverClassName

to

spring.datasource.driver-class-name

The hibernate.* properties are useless, they should be spring.jpa.* properties. Not to mention that you are trying to override those already set by using the spring.jpa.* properties. (For the explanation of each property I strongly suggest a read of the Spring Boot reference guide.

spring.jpa.database-platform = org.hibernate.dialect.MySQL5Dialect
spring.jpa.show-sql = true

# Hibernate
spring.jpa.hibernate.ddl-auto=update

Also the packages to scan are automatically detected based on the base package of your Application class. If you want to specify something else use the @EntityScan annotation. Also specifying the most toplevel package isn't really wise as it will scan the whole class path which will severely impact performance.

Maybe you forgot the MySQL JDBC driver.

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.34</version>
</dependency>

Not directly related to the original question but this will be useful for someone. This error occurred to me with a simple two project structure. One project was handling some database operations with spring JDBC (say A) and the other did not have any JDBC operations at all(say B). But still, this error appeared while I was starting service B. Saying the datasource should be initialized properly.

As I figured out I had added this dependency to the parent pom of the two modules

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>

This caused spring to initialize the JDBC dependencies for project B too. So, I moved it to project A's pom, everything was fine.

Hope this would help someone

It worked for me you can try your: Add this to VM options in Tomcat

-DdevBaseDir="C:\Your_Project_Dir_Path"

In my case I just ignored the following in application.properties file:

# Hibernate

#spring.jpa.hibernate.ddl-auto=update

It works for me....

I was facing this issue even after supplying all required datasource properties in application.properties. Then I realized that properties configuration class was not getting scanned by Spring boot because it was in different package hierarchy compared to my Spring boot Application.java and hence no properties were applied to datasource object. I changed the package name of my properties configuration class and it started working.