From: Mike Summers <msummers57_at_gmail.com>
Date: Tue, 24 Jan 2012 13:58:03 -0600

I'm writing a test server that needs to emulate a 3rd party RESTful server,
I'm using Jersey to write the test server.

All of the requests are POST with application/xml payloads so I started off
with:

      @Path("GetUserDetails")
      @POST
      @Consumes(MediaType.APPLICATION_XML)
      public GetUserDetailsResp GetUserDetails(GetUserDetailsReq request) {
        ...
      }

Jersey happily returns 400 when the XML is badly formatted
(GetUserDetailsReq is a JAXB object), which is not what I need. Rather I
need to return 200 and an XML error block.

I can get around the 400 by unmarshaling in the method and using an
@Provider/ExceptionMapper class, but that's clunky. Is there a declarative
way to specify to Jersey an alternative to returning the 400? Maybe a
variant on @Provider/ExceptionMapper?

TIA.