JAX-RS CXF Exception wrapping

问题

I would like to add an ExceptionMapper to CXF (2.6.1) which not only communicates the Response code, but also ships the exception in the payload format (I'm using JSON for now).

@Provider
public class CustomExceptionMapper
        implements
            ExceptionMapper<MyException>
{
...
@Override
public Response toResponse(MyException mex)
{
//I need something here which can convert mex object to JSON and ship it in response
// I want this to be de-serialized on client

//the following returns the status code
return Response.status(Response.Status.BAD_REQUEST).build();
}
...
}

Is there a way to do this ?

回答1:

You may need to use @Produces to serialize your object to JSON like:

@Produces(MediaType.APPLICATION_JSON)

And then return Response.ok().entity(OBJECT).build();

The way that you can test your service:

ClientConfig config = new DefaultClientConfig();
Client client = Client.create(config);
WebResource service = client.resource(getBaseURI());
ClientResponse response = service.path(ADDRESS).type("application/json").get(ClientResponse.class);
String s = response.getEntity(String.class);
System.out.println(s); 

private static URI getBaseURI() {
        return UriBuilder.fromUri(SERVER ADDRESS).build();
}

来源：https://stackoverflow.com/questions/11691815/jax-rs-cxf-exception-wrapping