From: Matyas Bene <matyas.bene_at_ferratum.com>
Date: Fri, 20 Dec 2013 08:30:59 +0000

Hi Jack,

Let me tell you what we're doing. It may, or may not be the "right solution", but it works for us since Jersey 2.0. You'll also notice we're using Jackson 2.x

@Provider
public class JacksonWithJoda extends com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider {

       public JacksonWithJoda() {
              ObjectMapper mapper = new ObjectMapper().registerModule(new JodaModule());
              //mapper.getSerializationConfig().withSerializationInclusion(Include.NON_EMPTY);
              mapper = mapper.setSerializationInclusion(Include.NON_NULL);
              setMapper(mapper);
       }
}

public class MyJacksonFeature implements Feature {

       // important - disable MOXY
    public boolean configure(final FeatureContext context) {
        final String disableMoxy = CommonProperties.MOXY_JSON_FEATURE_DISABLE + '.'
                + context.getConfiguration().getRuntimeType().name().toLowerCase();
        context.property(disableMoxy, true);

// context.register(JacksonJaxbJsonProvider.class, MessageBodyReader.class, MessageBodyWriter.class);
// context.register(JacksonJsonProvider.class, MessageBodyReader.class, MessageBodyWriter.class);
        context.register(JacksonWithJoda.class, MessageBodyReader.class, MessageBodyWriter.class);
        return true;
    }
}

// AppConfig below must be added as a parameter to Jersey, for example inside web.xml
// <init-param>
// <param-name>javax.ws.rs.Application</param-name>
// <param-value>myPackage.AppConfig</param-value>
// </init-param>
public class AppConfig extends ResourceConfig {

       public AppConfig() {
              super(MyJacksonFeature.class);
// register(LoggingFilter.class);
       }
}

Regards
M.

From: Jack Lista [mailto:jackalista_at_gmail.com]
Sent: Thursday, December 19, 2013 22:59
To: users_at_jersey.java.net
Cc: ayaskant swain
Subject: [Jersey] Re: Getting MessageBodyWriter not found for media type=application/json Error

Hi Marek,
Would you please explain to Ayaskant *how* to register the Jackson feature? I know this is (sort of) in the documentation, but I couldn't understand from the docs exactly what to do to make that happen. I'm betting he's also possibly unclear about that as well (and I'd benefit from seeing how this is supposed to be done even though we have muddled our way though it, I am not confident enough in our solution to offer it as something that should be done, we had a terrible time trying to understand how to clearly put Jackson into play properly).
That would help, and thanks!

On Thu, Dec 19, 2013 at 3:34 AM, Marek Potociar <marek.potociar_at_oracle.com<mailto:marek.potociar_at_oracle.com>> wrote:
A very first few sentences from the linked documentation:

Jersey JSON support comes as a set of extension modules where each of these modules contains an implementation of a Feature<http://jax-rs-spec.java.net/nonav/2.0/apidocs/javax/ws/rs/core/Feature.html> that needs to be registered into your Configurable<http://jax-rs-spec.java.net/nonav/2.0/apidocs/javax/ws/rs/core/Configurable.html>instance (client/server). There are multiple frameworks that provide support for JSON processing and/or JSON-to-Java binding. The modules listed bellow provide support for JSON representations by integrating the individual JSON frameworks into Jersey. ...

Further documentation section describe details how to enable JSON support with MOXy (8.1.2), JSON-P (8.1.3), Jackson (8.1.4) or Jettison (8.1.5). So, your problem is that you are not registering any of the features. Please select an extension module of your choice and follow the user guide to register the feature (as needed).

HTH,
Marek


On 19 Dec 2013, at 08:20, ayaskant swain <ayas_swain_at_yahoo.com<mailto:ayas_swain_at_yahoo.com>> wrote:

Hi,

I followed section 8.1.1.2 (JAXB based JSON support) in the User Guide document of JAX-RS API at this link - https://jersey.java.net/nonav/documentation/latest/user-guide.html#d0e4883.

I have created a RESTful service using JAX-RS API 2.0 & deployed in my Tomcat 6.0.37. I want my service to return a Student object in JSON format to the REST client. The mapping of Student Java object (Annotated with @XmlRootElement) should automatically be taken care by the underlying JAXB API.

But I am getting the below error on my server while trying to achieve this.

org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=application/json, type=class com.ayas.rest.model.jaxb.Student, genericType=class com.ayas.rest.model.jaxb.Student.

I searched on google & found some suggestions to use a JACKSON library which will act as a provider for the JSON object. But nothing as such is written in the Jersey user guide link which I have posted above.

There is no issue when I am using MediaType as APPLICATION_XML. It is perfectly working fine & returning XML string.

I am attaching my source code of both Server & client. Please help.

Thanks
Ayaskant
Bangalore
<Student.java><StudentInfoClient.java><StudentInfoService.java><web.xml>