Jersey: Returning 400 error instead of 500 when given invalid request body

Question

I\'m using Jersey\'s integrated Jackson processing to transform incoming JSON to a POJO, e.g.:

@POST
@Consumes(MediaType.APPLICATION_JSON)
public Response newCus         


        

Answer 1

I was finally able to work around this problem by implementing an ExceptionMapper to catch the UnrecognizedPropertyException thrown by Jackson and map it to a 400 Bad Request response:

@Provider
public class UnrecognizedPropertyExceptionMapper implements ExceptionMapper
{

    @Override
    public Response toResponse(UnrecognizedPropertyException exception)
    {
        return Response
                .status(Response.Status.BAD_REQUEST)
                .entity( "'" + exception.getUnrecognizedPropertyName() + "' is an unrecognized field.")
                .type( MediaType.TEXT_PLAIN)
                .build();
    }

}