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在Spring MVC应用中处理异常通常可以通过以下几种方式实现:
@ControllerAdvice
public class GlobalExceptionHandler {
@ExceptionHandler(Exception.class)
public ModelAndView handleException(Exception ex) {
ModelAndView mav = new ModelAndView();
mav.addObject("message", "An error occurred: " + ex.getMessage());
mav.setViewName("errorPage");
return mav;
}
}
@Controller
public class MyController {
@RequestMapping("/handleException")
public String handleException() {
throw new CustomException("Something went wrong");
}
@ExceptionHandler(CustomException.class)
public ModelAndView handleCustomException(CustomException ex) {
ModelAndView mav = new ModelAndView();
mav.addObject("message", "An error occurred: " + ex.getMessage());
mav.setViewName("errorPage");
return mav;
}
}
@ControllerAdvice
public class GlobalExceptionHandler {
@ExceptionHandler(ResourceNotFoundException.class)
public ResponseEntity<Object> handleResourceNotFoundException(ResourceNotFoundException ex) {
Map<String, Object> body = new LinkedHashMap<>();
body.put("message", "Resource not found");
body.put("timestamp", LocalDateTime.now());
return new ResponseEntity<>(body, HttpStatus.NOT_FOUND);
}
}
这些是处理异常的一些常见方法,在实际应用中可以根据具体需求选择合适的方式来处理异常。
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