java JAXRS CXF异常包装

Question

我想向CXF（2.6.1）添加一个ExceptionMapper，它不仅传递响应代码，还以有效负载格式发送异常（我现在使用的是JSON）

@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();
}
...
}

有办法做到这一点吗