Handle error 404 in web application - not REST application

Question

I\'m trying to handle 404 error using an @ControllerAdvice in a Spring MVC application totally configured using Javaconfig.

Spring MVC version is 4.1.5<

Answer 1

The solution is to extend AbstractAnnotationConfigDispatcherServletInitializer and override this method:

@Override
protected DispatcherServlet createDispatcherServlet(WebApplicationContext servletAppContext) {
    final DispatcherServlet dispatcherServlet = (DispatcherServlet) super.createDispatcherServlet(servletAppContext);
    dispatcherServlet.setThrowExceptionIfNoHandlerFound(true);
    return dispatcherServlet;
}

OR this one:

@Override
public void customizeRegistration(ServletRegistration.Dynamic registration) {
    registration.setInitParameter("throwExceptionIfNoHandlerFound", "true");
}

And finally in your ControlerAdvice use this:

@ExceptionHandler(NoHandlerFoundException.class)
public String error404(Exception ex) {

    return new ModelAndView("404");
}

Answer 2

Workaround: Add @RequestMapping("/**")

@Controller
@ControllerAdvice
public class GlobalExceptionHandler {

    private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);

    @RequestMapping("/**")
    public String handlerNotMappingRequest(HttpServletRequest request, HttpServletResponse response, HttpHeaders httpHeaders)
            throws NoHandlerFoundException {
        throw new NoHandlerFoundException("No handler mapping found.", request.getRequestURL().toString(), httpHeaders);
    }

    @ExceptionHandler(Throwable.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public ModelAndView handleControllerException(Throwable ex) {
        logger.error("ErrorLog: ", ex);
        return new ModelAndView("error/exception", "exceptionMsg", "ExceptionHandler msg: " + ex.toString());
    }

    @ExceptionHandler(NoHandlerFoundException.class)
    @ResponseStatus(HttpStatus.NOT_FOUND)
    public ModelAndView handleNoHandlerFoundException(NoHandlerFoundException ex) {
        logger.error("ErrorLog: ", ex);
        return new ModelAndView("error/exception", "exceptionMsg", "NoHandlerFoundException msg: " + ex.toString());
    }
}

Answer 3

Conclusion seems to be that setting throwExceptionIfNoHandlerFound to true does not throw an exception when no handler is found.

The solution is quite simple. From the javadoc @ DispatcherServlet.setThrowExceptionIfNoHandlerFound. It states here that a NoHandlerFoundException will never be thrown if DefaultServletHttpRequestHandler is used.

Solution hence is to remove the line

   configurer.enable();

from your MvcConfiguration. The exception should fire now and your GlobalExceptionHandler should do the rest!