I am currently trying to use HandlerExceptionResolver for exception handling in a Spring MVC project.
I want to handle normal exceptions via resolveException as well as 404's via
handleNoSuchRequestHandlingMethod.
Depending on the request type JSON or text/html the exception response should be returned appropriately.
resolveException works now.
But handleNoSuchRequestHandlingMethod is giving me a headache. It's never called!
According to the docu the method should be called on 404 errors
What am I doing wrong...
This is what I have so far.
public class JsonExceptionResolver implements HandlerExceptionResolver {
protected final Log logger = LogFactory.getLog(getClass());
public ModelAndView resolveException(HttpServletRequest request,
if (exception instanceof NoSuchRequestHandlingMethodException) {
return handleNoSuchRequestHandlingMethod((NoSuchRequestHandlingMethodException) exception, request, response, handler);
}
...
}
public ModelAndView handleNoSuchRequestHandlingMethod(NoSuchRequestHandlingMethodException ex,
HttpServletRequest request,
HttpServletResponse response,
Object handler){
logger.info("Handle my exception!!!");
ModelAndView mav = new ModelAndView();
boolean isJSON = request.getHeader("Accept").equals("application/json");
if(isJSON){
...
}else{
..
}
return mav;
}
}
EDIT with DefaultHandlerExceptionResolver:
public class MyExceptionResolver extends DefaultHandlerExceptionResolver {
protected final Log logger = LogFactory.getLog(getClass());
@Override
protected ModelAndView doResolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception exception) {
logger.warn("An Exception has occured in the application", exception);
logger.info("exception thrown " + exception.getMessage() );
if (exception instanceof NoSuchRequestHandlingMethodException) {
return handleNoSuchRequestHandlingMethod((NoSuchRequestHandlingMethodException) exception, request, response, handler);
}
...
return mav;
}
public ModelAndView handleNoSuchRequestHandlingMethod(NoSuchRequestHandlingMethodException ex,
HttpServletRequest request,
HttpServletResponse response,
Object handler){
logger.info("Handle my exception!!!");
ModelAndView mav = new ModelAndView();
boolean isJSON = request.getHeader("Accept").equals("application/json");
if(isJSON){
...
}else{
...
}
return mav;
}
}
The above code still has no effect.
Any other ideas?
