json serialization not working

[sschober]

I try to marshall an entity (annotated with @XmlRootElement) and no MessageBodyWrite is found:

org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=application/json, type=class de.uulm.ic2.entities.IC2Node, genericType=class de.uulm.ic2.entities.IC2Node.

My service is definied like this:

    @GET
    @Path("node")
    @Produces(MediaType.APPLICATION_JSON)
    public IC2Node getNode(){
        return new IC2Node(0, HOSTNAME_KEY, IP_KEY, 0, ASN_KEY, new ASN());
    }

I am including/starting the gson provider bundle

osgi> ss | grep eclipsesource
68  ACTIVE      com.eclipsesource.jaxrs.publisher_3.1.0.201309301542
70  ACTIVE      com.eclipsesource.jaxrs.provider.gson_1.0.0.201309301542

Am I missing something here?

[sschober]

XML serialization is working just fine, btw...

[sschober]

Please let my know if you need further information.

[hstaudacher]

Hi @sschober, I don't think I need further information. I just need the time to fix it ;). Hopefully next week will be a free slot were I can do the work.

[BryanHunt]

As a workaround, you could try using the Moxy provider

[dcaillia]

Maybe this relates to issue #30 (ordering of bundles).

[hstaudacher]

Hmm, I have investigated deeper here. This was the exampel I have used:

@Path( "/osgi-jax-rs" )
public class ExampleService {

  public static class Foo {

    private final String a;
    private final String b;

    public Foo( String a, String b ) {
      this.a = a;
      this.b = b;
    }

    public String getA() {
      return a;
    }

    public String getB() {
      return b;
    }

  }

  @GET
  @Produces( MediaType.APPLICATION_JSON )
  public Map<String, Foo> seyHello() {
    HashMap<String, Foo> map = new HashMap<String, Foo>();
    map.put( "foo", new Foo( "first", "second" ) );
    map.put( "bar", new Foo( "third", "fourth" ) );
    return map;
  }
}

and it's producing:

{"foo":{"a":"first","b":"second"},"bar":{"a":"third","b":"fourth"}}

this is my ss:

0   ACTIVE      org.eclipse.osgi_3.8.0.v20120529-1548
1   ACTIVE      org.eclipse.jetty.io_8.1.3.v20120522
2   ACTIVE      org.eclipse.jetty.http_8.1.3.v20120522
3   ACTIVE      org.eclipse.equinox.http.jetty_3.0.0.v20120522-1841
4   ACTIVE      org.eclipse.jetty.server_8.1.3.v20120522
5   ACTIVE      org.glassfish.hk2.external.cglib_2.2.0.b18
6   ACTIVE      org.glassfish.jersey.core.jersey-client_2.3.1
7   ACTIVE      org.eclipse.jetty.util_8.1.3.v20120522
8   ACTIVE      org.eclipse.jetty.continuation_8.1.3.v20120522
9   ACTIVE      org.glassfish.hk2.utils_2.2.0.b18
10  ACTIVE      org.eclipse.jetty.servlet_8.1.3.v20120522
11  ACTIVE      javax.validation.api_1.1.0.Final
12  ACTIVE      org.glassfish.jersey.core.jersey-server_2.3.1
13  ACTIVE      com.eclipsesource.jaxrs.provider.gson_1.0.0.qualifier
14  ACTIVE      org.apache.felix.gogo.shell_0.8.0.v201110170705
15  ACTIVE      org.eclipse.equinox.console_1.0.0.v20120522-1841
16  ACTIVE      javax.ws.rs-api_2.0.0
17  ACTIVE      org.glassfish.hk2.external.javax.inject_2.2.0.b18
18  ACTIVE      org.glassfish.hk2.api_2.2.0.b18
19  ACTIVE      org.glassfish.hk2.locator_2.2.0.b18
20  ACTIVE      org.eclipse.jetty.security_8.1.3.v20120522
21  ACTIVE      com.eclipsesource.jaxrs.publisher_3.1.0.qualifier
22  ACTIVE      com.google.gson_2.2.2
23  ACTIVE      javax.annotation-api_1.2.0.b04
24  ACTIVE      org.glassfish.hk2.external.asm-all-repackaged_2.2.0.b18
25  ACTIVE      org.glassfish.hk2.osgi-resource-locator_1.0.1
26  ACTIVE      org.glassfish.jersey.core.jersey-common_2.3.1
27  ACTIVE      org.eclipse.osgi.services_3.3.100.v20120522-1822
28  ACTIVE      org.eclipse.equinox.http.servlet_1.1.300.v20120522-1841
29  ACTIVE      org.glassfish.jersey.containers.jersey-container-servlet-core_2.3.1
30  ACTIVE      org.apache.felix.gogo.command_0.8.0.v201108120515
31  ACTIVE      com.google.guava_14.0.1
32  ACTIVE      javax.servlet-api_3.0.1
33  ACTIVE      com.eclipsesource.jaxrs.connector.example_1.0.0.qualifier
34  ACTIVE      org.eclipse.equinox.cm_1.0.400.v20120522-1841
35  ACTIVE      org.apache.felix.gogo.runtime_0.8.0.v201108120515

So, from my point of view everything works as expected.

I will close the issue. Please reopen it if the problem still exist with further information.