@ControllerAdvice 관련

DOC : https://spring.io/blog/2013/11/01/exception-handling-in-spring-mvc

정의해둔 Exception 발생시 어떤 메시지 및 동작을 할 것인지 처리 할 수 있다.

@ExceptionHandler 애노테이션을 이용해 각 Exception 별 처리 방법을 정리 가능.

@ControllerAdvice class GlobalControllerExceptionHandler { @ResponseStatus(HttpStatus.CONFLICT) // 409 @ExceptionHandler(DataIntegrityViolationException.class) public void handleConflict() { // Nothing to do } }

@ControllerAdvice 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; } }