java - 异常处理，RestController建议

当本机查询无法执行sqlgrammar异常和Exception之间执行的restcontrolleradvice类的方法时

@RestControllerAdvice
公共类ExceptionControllerAdvice {

@Autowired
Helper HelperUtilities;

@Autowired
HttpServletRequest request;

@Autowired
Telemetry tel;




@ExceptionHandler(SQLGrammarException.class)
public ResponseEntity<ErrorResponse> exceptionHandler(SQLGrammarException ex) {
    ex.printStackTrace();
    ErrorResponse error = new ErrorResponse();
    error.setErrorCode(500);
    error.setMessage(ex.getMessage());

    // Log this error in Kibana using stdout
    String CurrentUser = HelperUtilities.getCurrentUserNameFromJWT();
    String ErrorDetails = "Server Side Error (UnHandled):: User - " + CurrentUser
            + " ::: Method  - exceptionHandler(Exception ex) :: Error Details - "
            + HelperUtilities.getStackTraceAsString(ex);

    return new ResponseEntity<ErrorResponse>(error, HttpStatus.INTERNAL_SERVER_ERROR);
}

@ExceptionHandler(Exception.class)
public ResponseEntity<ErrorResponse> exceptionHandler(Exception ex)  {
    ex.printStackTrace();
    ErrorResponse error = new ErrorResponse();
    error.setErrorCode(400);
    error.setMessage(ex.getLocalizedMessage());
    String CurrentUser = HelperUtilities.getCurrentUserNameFromJWT();
    String ErrorDetails = "Server Side Error (UnHandled):: User - " + CurrentUser
            + " ::: Method  - exceptionHandler(Exception ex) :: Error Details - "
            + HelperUtilities.getStackTraceAsString(ex);
    tel.setExeceptionEventData( HttpStatus.BAD_REQUEST.toString(),ErrorDetails, new Object() {
    }.getClass().getEnclosingMethod().getName());
    return new ResponseEntity<ErrorResponse>(error, HttpStatus.INTERNAL_SERVER_ERROR);

}

最佳答案

Spring将以在SpringContext中注册的相同顺序调用ExceptionHandler。
使用@Order或@Priority批注以确保首先注册更具体的ExceptionHandler。
在你的情况下

@Order(1)
@ExceptionHandler(SQLGrammarException.class)
public ResponseEntity<ErrorResponse> exceptionHandler(SQLGrammarException ex)
{
   ....
}

@Order(2)
@ExceptionHandler(Exception.class)
public ResponseEntity<ErrorResponse> exceptionHandler(Exception ex)  {
  ....
}

通过在Google中搜索“弹簧多个异常处理程序”在这里找到答案：Setting Precedence of Multiple @ControllerAdvice @ExceptionHandlers


所以这里的重点是：如果您有一个带有@ExceptionHandler for Exception的@ControllerAdvice，并且在另一个带有@ExceptionHandler的@ControllerAdvice类中注册了一个更具体的异常（如IOException），则第一个将被调用。如前所述，可以通过让@ControllerAdvice注释类实现Ordered或使用@Order或@Priority对其进行注释并为其指定适当的值，来控制该注册顺序。