Handle error 404 with Spring controller

Question

I use @ExceptionHandler to handle exceptions thrown by my web app, in my case my app returns JSON response with HTTP status for error

Answer 1

Simplest way to find out is use the following:

@ExceptionHandler(Throwable.class)
  public String handleAnyException(Throwable ex, HttpServletRequest request) {
    return ClassUtils.getShortName(ex.getClass());
  }

If the URL is within the scope of DispatcherServlet then any 404 caused by mistyping or anything else will be caught by this method but if the URL typed is beyond the URL mapping of the DispatcherServlet then you have to either use:

   404
   /404error.html

or

Provide "/" mapping to your DispatcherServlet mapping URL so as to handle all the mappings for the particular server instance.