This exception resolver is enabled by default in the {@link org.springframework.web.servlet.DispatcherServlet}. + *
This exception resolver is enabled by default in the common Spring + * {@link org.springframework.web.servlet.DispatcherServlet}. * * @author Arjen Poutsma * @author Rossen Stoyanchev + * @author Juergen Hoeller * @since 3.0 - * * @see org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler * @see #handleNoSuchRequestHandlingMethod * @see #handleHttpRequestMethodNotSupported @@ -145,10 +146,12 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes return handleHttpMessageNotWritable((HttpMessageNotWritableException) ex, request, response, handler); } else if (ex instanceof MethodArgumentNotValidException) { - return handleMethodArgumentNotValidException((MethodArgumentNotValidException) ex, request, response, handler); + return handleMethodArgumentNotValidException((MethodArgumentNotValidException) ex, request, response, + handler); } else if (ex instanceof MissingServletRequestPartException) { - return handleMissingServletRequestPartException((MissingServletRequestPartException) ex, request, response, handler); + return handleMissingServletRequestPartException((MissingServletRequestPartException) ex, request, + response, handler); } else if (ex instanceof BindException) { return handleBindException((BindException) ex, request, response, handler); @@ -158,7 +161,9 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes } } catch (Exception handlerException) { - logger.warn("Handling of [" + ex.getClass().getName() + "] resulted in Exception", handlerException); + if (logger.isWarnEnabled()) { + logger.warn("Handling of [" + ex.getClass().getName() + "] resulted in Exception", handlerException); + } } return null; } @@ -211,9 +216,10 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes /** * Handle the case where no {@linkplain org.springframework.http.converter.HttpMessageConverter message converters} - * were found for the PUT or POSTed content.
The default implementation sends an HTTP 415 error, - * sets the "Accept" header, and returns an empty {@code ModelAndView}. Alternatively, a fallback - * view could be chosen, or the HttpMediaTypeNotSupportedException could be rethrown as-is. + * were found for the PUT or POSTed content. + *
The default implementation sends an HTTP 415 error, sets the "Accept" header, + * and returns an empty {@code ModelAndView}. Alternatively, a fallback view could + * be chosen, or the HttpMediaTypeNotSupportedException could be rethrown as-is. * @param ex the HttpMediaTypeNotSupportedException to be handled * @param request current HTTP request * @param response current HTTP response @@ -305,7 +311,7 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes protected ModelAndView handleServletRequestBindingException(ServletRequestBindingException ex, HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException { - response.sendError(HttpServletResponse.SC_BAD_REQUEST); + response.sendError(HttpServletResponse.SC_BAD_REQUEST, ex.getMessage()); return new ModelAndView(); } @@ -323,21 +329,13 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes protected ModelAndView handleConversionNotSupported(ConversionNotSupportedException ex, HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException { + if (logger.isWarnEnabled()) { + logger.warn("Failed to convert request element: " + ex); + } sendServerError(ex, request, response); return new ModelAndView(); } - /** - * Invoked to send a server error. Sets the status to 500 and also sets the - * request attribute "javax.servlet.error.exception" to the Exception. - */ - protected void sendServerError(Exception ex, - HttpServletRequest request, HttpServletResponse response) throws IOException { - - request.setAttribute("javax.servlet.error.exception", ex); - response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); - } - /** * Handle the case when a {@link org.springframework.web.bind.WebDataBinder} conversion error occurs. *
The default implementation sends an HTTP 400 error, and returns an empty {@code ModelAndView}. @@ -352,6 +350,9 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes protected ModelAndView handleTypeMismatch(TypeMismatchException ex, HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException { + if (logger.isWarnEnabled()) { + logger.warn("Failed to bind request element: " + ex); + } response.sendError(HttpServletResponse.SC_BAD_REQUEST); return new ModelAndView(); } @@ -372,6 +373,9 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes protected ModelAndView handleHttpMessageNotReadable(HttpMessageNotReadableException ex, HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException { + if (logger.isWarnEnabled()) { + logger.warn("Failed to read HTTP message: " + ex); + } response.sendError(HttpServletResponse.SC_BAD_REQUEST); return new ModelAndView(); } @@ -392,6 +396,9 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes protected ModelAndView handleHttpMessageNotWritable(HttpMessageNotWritableException ex, HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException { + if (logger.isWarnEnabled()) { + logger.warn("Failed to write HTTP message: " + ex); + } sendServerError(ex, request, response); return new ModelAndView(); } @@ -408,6 +415,7 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes */ protected ModelAndView handleMethodArgumentNotValidException(MethodArgumentNotValidException ex, HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException { + response.sendError(HttpServletResponse.SC_BAD_REQUEST); return new ModelAndView(); } @@ -424,6 +432,7 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes */ protected ModelAndView handleMissingServletRequestPartException(MissingServletRequestPartException ex, HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException { + response.sendError(HttpServletResponse.SC_BAD_REQUEST, ex.getMessage()); return new ModelAndView(); } @@ -432,7 +441,7 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes * Handle the case where an {@linkplain ModelAttribute @ModelAttribute} method * argument has binding or validation errors and is not followed by another * method argument of type {@link BindingResult}. - * By default an HTTP 400 error is sent back to the client. + * By default, an HTTP 400 error is sent back to the client. * @param request current HTTP request * @param response current HTTP response * @param handler the executed handler @@ -441,14 +450,15 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes */ protected ModelAndView handleBindException(BindException ex, HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException { + response.sendError(HttpServletResponse.SC_BAD_REQUEST); return new ModelAndView(); } /** * Handle the case where no handler was found during the dispatch. - *
The default sends an HTTP 404 error, and returns - * an empty {@code ModelAndView}. Alternatively, a fallback view could be chosen, + *
The default implementation sends an HTTP 404 error and returns an empty + * {@code ModelAndView}. Alternatively, a fallback view could be chosen, * or the NoHandlerFoundException could be rethrown as-is. * @param ex the NoHandlerFoundException to be handled * @param request current HTTP request @@ -459,10 +469,23 @@ public class DefaultHandlerExceptionResolver extends AbstractHandlerExceptionRes * @throws IOException potentially thrown from response.sendError() * @since 4.0 */ - protected ModelAndView handleNoHandlerFoundException(NoHandlerFoundException ex, HttpServletRequest request, - HttpServletResponse response, Object handler) throws IOException { + protected ModelAndView handleNoHandlerFoundException(NoHandlerFoundException ex, + HttpServletRequest request, HttpServletResponse response, Object handler) throws IOException { + response.sendError(HttpServletResponse.SC_NOT_FOUND); return new ModelAndView(); } + + /** + * Invoked to send a server error. Sets the status to 500 and also sets the + * request attribute "javax.servlet.error.exception" to the Exception. + */ + protected void sendServerError(Exception ex, HttpServletRequest request, HttpServletResponse response) + throws IOException { + + request.setAttribute("javax.servlet.error.exception", ex); + response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); + } + }