CODEWITHSUNDEEP
javarestserializationjerseyjackson
gorootde
gorootde

Reputation: 4073

Jersey not able to serialize annotations?

Serializing an annotation with jersey always fails with an unknown error.

Minimal example is:

Jersey ressource

@TestAnno( id = "TestID" )
@Path( "/test" )
public class TestResource
{
   @GET
   @Produces( MediaType.APPLICATION_JSON )
   public TestAnno list() throws JsonGenerationException, JsonMappingException, IOException
   {
      final TestAnno ta = getClass().getAnnotation( TestAnno.class );
      return ta;
   }
}

Annotation

@Retention( RetentionPolicy.RUNTIME )
@Target( ElementType.TYPE )
public @interface TestAnno
{
   @JsonProperty( "id" )
   String id();
}

The call always returns 

HTTP ERROR: 500
Problem accessing /schema. Reason:
Server Error

The debug log is empty, there are no exceptions or any other information about the error. What is the point where jersey fails?

Upvotes: 0

Views: 168

Answers (1)

Evgeny Makarov
Evgeny Makarov

Reputation: 1448

Probably you don't have Serializer with such a class. Consider to write your Dto class and map all the information from your annotation to it. Then just return in as a response. Something like:

  public Response list() throws JsonGenerationException, JsonMappingException, IOException
   {
      final TestAnno ta = getClass().getAnnotation( TestAnno.class );
      MyDto dto = buildDto(ta);

      return Response.ok(dto);
   }

Upvotes: 1

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