Spring 弹簧靴&x2B；REST异常处理程序-始终获取500错误

我有一个REST服务，它可能引发异常

这是我的自定义例外

public class CommentNotPostableException extends Exception {

        public CommentNotPostableException(final String message) {
            super(message);
        }

    }

然后，对于我的RESTAPI，我实现了一个

RestResponseEntityExceptionHandler

，它扩展了

ResponseEntityExceptionHandler

其方法之一是

@ExceptionHandler(value = { CommentNotPostableException.class })
    protected ResponseEntity<Object> handleCommentNotPostableException(CommentNotPostableException ex, WebRequest request) {
        StringBuilder builder = new StringBuilder();
        builder.append(ex.getMessage());

        ApiError apiError = new ApiError(HttpStatus.valueOf(46), 
          ex.getLocalizedMessage(), builder.substring(0, builder.length()));
        logger.error("Already posted", ex);
       return new ResponseEntity<Object>(apiError, new HttpHeaders(), apiError.getStatus());
     }

这是我从日志中得到的

2017-05-29 21:13:32 DEBUG i.b.e.w.r.CommentRestController[57] - dto è CommentDTO [comment=A, vote=3, reservationId=7161]
2017-05-29 21:13:32 ERROR o.a.c.c.C.[.[.[.[dispatcherServlet][181] - Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is it.besmart.easyparking.exceptions.CommentNotPostableException: Already posted] with root cause
it.besmart.easyparking.exceptions.CommentNotPostableException: Already posted
    at it.besmart.easyparking.web.restcontroller.CommentRestController.postComment(CommentRestController.java:78) ~[classes/:na]

---

我总是使用@ControllerAdvice来实现这一点，它工作得非常完美。参见：示例。他们应该会帮你的。这就是我的工作方式，我的ExceptionHandler类用ControllerAdvice注释，每个异常都用ExceptionHandlerOK注释。我想您应该在这里重写

HttpStatus

enum中的

valueOf（param1）

方法。它总是返回500的原因是

46

在

HttpStatus

enum中不是有效的Http响应，valueOf（）方法正在执行此操作

public statistic HttpStatus valueOf（int statusCode）{for（HttpStatus status:values（））{if（status.value==statusCode）{return status；}}抛出新的IllegalArgumentException（“+statusCode+”）；}

您可以按照创建一个返回46状态代码的自定义枚举。谢谢，问题其实是我的自定义响应代码！

{
  "timestamp": 1496084392755,
  "status": 500,
  "error": "Internal Server Error",
  "exception": "it.besmart.easyparking.exceptions.CommentNotPostableException",
  "message": "Already posted",
  "path": "/api/oauth/comment/new"
}

2017-05-29 21:13:32 DEBUG i.b.e.w.r.CommentRestController[57] - dto è CommentDTO [comment=A, vote=3, reservationId=7161]
2017-05-29 21:13:32 ERROR o.a.c.c.C.[.[.[.[dispatcherServlet][181] - Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is it.besmart.easyparking.exceptions.CommentNotPostableException: Already posted] with root cause
it.besmart.easyparking.exceptions.CommentNotPostableException: Already posted
    at it.besmart.easyparking.web.restcontroller.CommentRestController.postComment(CommentRestController.java:78) ~[classes/:na]