Question

@RequestMapping(value = "/testerror", method = RequestMethod.GET)
        public
        @ResponseBody
        ErrorTO testerror(HttpServletRequest request, HttpServletResponse response) {
           throw new RuntimeException("erorrrrrr");
        }

        @ExceptionHandler(RuntimeException.class)
        public @ResponseBody ErrorTO handlePoprocksExceptionAsReponseBody(RuntimeException ex,
               HttpServletRequest request, HttpServletResponse response) {
            response.setStatus(response.SC_BAD_REQUEST);
            return new ErrorTO(ex.getMessage(), -999);
        }

The above code did not work. StackTrace looked like this:

org.springframework.web.util.NestedServletException:
Request processing failed; nested
exception is
java.lang.RuntimeException: erorrrrrr
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:656)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

I looked at Spring 3 controller exception handler implementation problems , and based on that it seems to be that exception handlers can only return views. Is that true?

Answer 1

turns out to be a bug and said to be fixed in 3.1.