/** Exception to be thrown when validation on an argument annotated with @Valid fails. */ @ExceptionHandler(MethodArgumentNotValidException.class) public ResponseEntity<Map<String, Object>> handleMethodArgumentNotValidException( MethodArgumentNotValidException errors) { Map<String, Object> errorMap = new HashMap<String, Object>(); errorMap.put("hasErrors", "true"); errorMap.put("developerMessage", "There are validation issues, please provide valid inputs"); errorMap.put("userMessage", "Please provide valid inputs"); errorMap.put("moreInfo", errors.getMessage()); errorMap.put("errorCode", HttpStatus.BAD_REQUEST); errors.printStackTrace(); for (FieldError error : errors.getBindingResult().getFieldErrors()) { errorMap.put(error.getField(), error.getDefaultMessage()); } return new ResponseEntity<Map<String, Object>>(errorMap, HttpStatus.BAD_REQUEST); }