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  Spring MVC Exception Handling
  Add Date : 2018-11-21      
  Using HTTP Status Codes

Use ResponseStatus comment on our custom exception. When our Controller exception is thrown and not handled, he will return HTTP STATUS value specified HTTP RESPONSE, such as:

    @ResponseStatus (Value = HttpStatus.NOT_FOUND, reason = "No such Order") // 404
    public class OrderNotFoundException extends RuntimeException {
        // ...
Our Controller is:

 @RequestMapping (Value = "/ orders / {id}", method = GET)
    public String showOrder (@PathVariable ( "id") long id, Model model) {
        Order order = orderRepository.findOrderById (id);
        if (order == null) throw new OrderNotFoundException (id);
        model.addAttribute (order);
        return "orderDetail";
This time will return to 404 to 404 pages instead of error pages

Controller Based Exception Handling

In one Controller,

, Note that this is only valid for a single Controller. You can do this:

After an exception occurs, change Response status, in general, the occurrence of abnormal returns HTTP STATUS 500. We can become the other.
Go error page after an error occurs
You can define different for different exception handling (such as different error page different Response status)
for example

public class ExceptionHandlingController {

  // We marked @RequestMapping methods
  // Method to handle exceptions.
  // Our defined exceptions into specific Http status code
  @ResponseStatus (Value = HttpStatus.CONFLICT, reason = "Data integrity violation") // 409
  @ExceptionHandler (DataIntegrityViolationException.class)
  public void conflict () {
    // Nothing to do

  After // capture SQLException, DataAccessException abnormal, go to a specific page.
  @ExceptionHandler ({SQLException.class, DataAccessException.class})
  public String databaseError () {
    // Only goes to the error page, we do not get this value Exception on the page, to get value, we can get through the following method
    return "databaseError";

  // By ModelAndView return to the page, and the page to pass the appropriate values
  @ExceptionHandler (Exception.class)
  public ModelAndView handleError (HttpServletRequest req, Exception exception) {
    logger.error ( "Request:" + req.getRequestURL () + "raised" + exception);

    ModelAndView mav = new ModelAndView ();
    mav.addObject ( "exception", exception);
    mav.addObject ( "url", req.getRequestURL ());
    mav.setViewName ( "error");
    return mav;
Global Exception Handling

Use @ControllerAdvice annotation on the class, so that we can handle the entire program thrown.


class GlobalControllerExceptionHandler {
    @ResponseStatus (HttpStatus.CONFLICT) // 409
    @ExceptionHandler (DataIntegrityViolationException.class)
    public void handleConflict () {
        // Nothing to do
   // Go to a specific page. . . . .
If we want all of the exception handler can do:

class GlobalDefaultExceptionHandler {
    public static final String DEFAULT_ERROR_VIEW = "error";

    @ExceptionHandler (Value = Exception.class)
    public ModelAndView defaultErrorHandler (HttpServletRequest req, Exception e) throws Exception {
        // If the exception is annotated with @ResponseStatus rethrow it and let
        // The framework handle it - like the OrderNotFoundException example
        // At the start of this post.
        // AnnotationUtils is a Spring Framework utility class.
        if (AnnotationUtils.findAnnotation (e.getClass (), ResponseStatus.class)! = null) {
            throw e;
        // Otherwise setup and send the user to a default error-view.
        ModelAndView mav = new ModelAndView ();
        mav.addObject ( "exception", e);
        mav.addObject ( "url", req.getRequestURL ());
        mav.setViewName (DEFAULT_ERROR_VIEW);
        return mav;
Going Deeper

HandlerExceptionResolver implement interfaces, SpringMvc can use exception to handle him thrown Controller

public interface HandlerExceptionResolver {
    ModelAndView resolveException (HttpServletRequest request,
            HttpServletResponse response, Object handler, Exception ex);
SpringMvc use three default HandlerExceptionResolver to handle our exception

ExceptionHandlerExceptionResolver :.
DefaultHandlerExceptionResolver: some standard Spring-defined exceptions, be converted to HTTP STATUS CODE.
Spring built SimpleMappingExceptionResolver realized HandlerExceptionResolver interfaces, but also we often use, XML configuration is as follows:

< Bean id = "simpleMappingExceptionResolver"
          class = "org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
        < Property name = "exceptionMappings">
            < Map>
                < -! Key for the exception type, value is to go to page ->
                < Entry key = "DatabaseException" value = "databaseError" />
                < Entry key = "InvalidCreditCardException" value = "creditCardError" />
            < / Map>
        < / Property>
        < ! - The default exception page ->
        < Property name = "defaultErrorView" value = "error" />
        < ! - Page we can get through ex exception information ->
        < Property name = "exceptionAttribute" value = "ex" />
        < -! Name of logger to use to log exceptions Unset by default, so logging disabled -.>
         < -! Log exception information, the default is not set - do not log exception information ->
        < Property name = "warnLogCategory" value = "example.MvcLogger" />
    < / Bean>
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