I am using the CXF rest client which works well for simple data types (eg: Strings, ints). However, when I attempt to use custom Objects I get this:
Exception in thread "main" org.apache.cxf.interceptor.Fault: .No message body writer found for class : class com.company.datatype.normal.MyObject.
at org.apache.cxf.jaxrs.client.ClientProxyImpl$BodyWriter.handleMessage(ClientProxyImpl.java:523)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
at org.apache.cxf.jaxrs.client.ClientProxyImpl.doChainedInvocation(ClientProxyImpl.java:438)
at org.apache.cxf.jaxrs.client.ClientProxyImpl.invoke(ClientProxyImpl.java:177)
at $Proxy13.execute(Unknown Source)
at com.company.JaxTestClient.main(JaxTestClient.java:26)
Caused by: org.apache.cxf.jaxrs.client.ClientWebApplicationException: .No message body writer found for class : class com.company.datatype.normal.MyObject.
at org.apache.cxf.jaxrs.client.AbstractClient.reportMessageHandlerProblem(AbstractClient.java:491)
at org.apache.cxf.jaxrs.client.AbstractClient.writeBody(AbstractClient.java:401)
at org.apache.cxf.jaxrs.client.ClientProxyImpl$BodyWriter.handleMessage(ClientProxyImpl.java:515)
... 5 more
I'm calling it like this:
JaxExample jaxExample = JAXRSClientFactory.create( "http://localhost:8111/", JaxExample.class );
MyObject before = ...
MyObject after = jaxExample.execute( before );
Here is the method in the interface:
@POST
@Path( "execute" )
@Produces( "application/json" )
MyObject execute( MyObject myObject );
The restlet library does this quite simply, by adding the XStream dependency to your path it "just works". Does CXF something similar?
EDIT #1:
I've posted this as a feature improvement to the CXF issue management system here. I can only hope this will get attended to.
This question is related to
java
web-services
cxf
You can also configure CXFNonSpringJAXRSServlet (assuming JSONProvider is used):
<init-param>
<param-name>jaxrs.providers</param-name>
<param-value>
org.apache.cxf.jaxrs.provider.JSONProvider
(writeXsiType=false)
</param-value>
</init-param>
In my scenario, i faced similar error, when the rest url without port number is not properly configured for load balancing. I verified the rest url with portnumber and this issue was not occurring. so we had to update the load balancing configuration to resolve this issue.
Step 1: Add the bean class into the dataFormat
list:
<dataFormats>
<json id="jack" library="Jackson" prettyPrint="true"
unmarshalTypeName="{ur bean class path}" />
</dataFormats>
Step 2: Marshal the bean prior to the client call:
<marchal id="marsh" ref="jack"/>
I encountered this problem while upgrading from CXF 2.7.0 to 3.0.2. Here is what I did to resolve it:
Included the following in my pom.xml
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-rs-extension-providers</artifactId>
<version>3.0.2</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-jaxrs</artifactId>
<version>1.9.0</version>
</dependency>
and added the following provider
<jaxrs:providers>
<bean class="org.codehaus.jackson.jaxrs.JacksonJaxbJsonProvider" />
</jaxrs:providers>
When programmatically creating server, you can add message body writers for json/xml by setting Providers.
JAXRSServerFactoryBean bean = new JAXRSServerFactoryBean();
bean.setAddress("http://localhost:9000/");
List<Object> providers = new ArrayList<Object>();
providers.add(new JacksonJaxbJsonProvider());
providers.add(new JacksonJaxbXMLProvider());
bean.setProviders(providers);
List<Class< ? >> resourceClasses = new ArrayList<Class< ? >>();
resourceClasses.add(YourRestServiceImpl.class);
bean.setResourceClasses(resourceClasses);
bean.setResourceProvider(YourRestServiceImpl.class, new SingletonResourceProvider(new YourRestServiceImpl()));
BindingFactoryManager manager = bean.getBus().getExtension(BindingFactoryManager.class);
JAXRSBindingFactory restFactory = new JAXRSBindingFactory();
restFactory.setBus(bean.getBus());
manager.registerBindingFactory(JAXRSBindingFactory.JAXRS_BINDING_ID, restFactory);
bean.create();
None of the above changes worked for me. Please see my worked configuration below:
Dependencies:
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-frontend-jaxrs</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-rs-extension-providers</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-jaxrs</artifactId>
<version>1.9.13</version>
</dependency>
<dependency>
<groupId>org.codehaus.jettison</groupId>
<artifactId>jettison</artifactId>
<version>1.4.0</version>
</dependency>
web.xml:
<servlet>
<servlet-name>cfxServlet</servlet-name>
<servlet-class>org.apache.cxf.jaxrs.servlet.CXFNonSpringJaxrsServlet</servlet-class>
<init-param>
<param-name>javax.ws.rs.Application</param-name>
<param-value>com.MyApplication</param-value>
</init-param>
<init-param>
<param-name>jaxrs.providers</param-name>
<param-value>org.codehaus.jackson.jaxrs.JacksonJsonProvider</param-value>
</init-param>
<init-param>
<param-name>jaxrs.extensions</param-name>
<param-value>
json=application/json
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>cfxServlet</servlet-name>
<url-pattern>/v1/*</url-pattern>
</servlet-mapping>
Enjoy coding .. :)
If you are using jaxrs:client route of configuring, you can choose to use the JacksonJsonProvider to provide
<jaxrs:client id="serviceId"
serviceClass="classname"
address="">
<jaxrs:providers>
<bean class="org.codehaus.jackson.jaxrs.JacksonJsonProvider">
<property name="mapper" ref="jacksonMapper" />
</bean>
</jaxrs:providers>
</jaxrs:client>
<bean id="jacksonMapper" class="org.codehaus.jackson.map.ObjectMapper">
</bean>
You need to include the jackson-mapper-asl and jackson-jaxr artifacts in your classpath
You can try with mentioning "Accept: application/json" in your rest client header as well, if you are expecting your object as JSON in response.
If you are using "cxf-rt-rs-client" version 3.03. or above make sure the xml name space and schemaLocation are declared as below
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jaxrs="http://cxf.apache.org/jaxrs"
xmlns:jaxrs-client="http://cxf.apache.org/jaxrs-client"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd http://cxf.apache.org/jaxrs-client http://cxf.apache.org/schemas/jaxrs-client.xsd">
And make sure the client have JacksonJsonProvider or your custom JsonProvider
<jaxrs-client:client id="serviceClient" address="${cxf.endpoint.service.address}" serviceClass="serviceClass">
<jaxrs-client:headers>
<entry key="Accept" value="application/json"></entry>
</jaxrs-client:headers>
<jaxrs-client:providers>
<bean class="org.codehaus.jackson.jaxrs.JacksonJsonProvider">
<property name="mapper" ref="jacksonMapper" />
</bean>
</jaxrs-client:providers>
</jaxrs-client:client>
Source: Stackoverflow.com