JAX-RS NoMessageBodyWriterFoundFailure

Question

the method of my jax-rs application:

@GET
@Produces (MediaType.APPLICATION_JSON)
public List  getDocumentList(@HeaderParam(\"Range\") String head         


        

Answer 1

The snippet below should do the trick.

@GET
@Produces(MediaType.APPLICATION_JSON)
public Response getDocumentList(@HeaderParam("Range") String headerRange) {
   int[] range = getRangeFromHeader(headerRange);
   return Response.ok(
        new GenericEntity>( (List)facade.listByRange(range))
         )
         .header("Content-Range", getContentRangeStr(range)).build();
}

The anonymous GenericEntity subclass is required to supply the correct type information (otherwise erased by the compiler) for the writer.

-- EDIT

The reason why your code worked using org.jboss.resteasy.resteasy-jackson-provider but not with org.jboss.resteasy.resteasy-jettison-provider resides on the fundamental difference between the two providers:

• the former (jackson) relies on a JavaBean model, discovering the properties of the objects to serialize, and needs no type information
• the latter (jettyson) relies on the JAXB annotations, so it needs the underlying type information, erased by the compiler.