5

即使我从代码异常中抛出自定义异常,邮递员也会收到内部服务器错误。我想看看有一个有效的错误消息和错误代码的异常,我抛出了什么。如果你们中的任何人可以在这一点上帮助我,那将是一个很大的帮助。就像我如何获得更好的错误消息一样。添加下面的代码快照。提前致谢。

@Service
public class FetchActionImpl implements FetchAction {

    private static Logger log = LoggerFactory.getLogger(FetchActionImpl.class);

    @Autowired
    FetchActionServiceImpl fetchActionService;// = new FetchActionServiceImpl();

    @Override
    public FetchResponse fetchActionRequest(String caseId) throws BBWException,Exception{
        //String resp ="";
        log.info("fetchaction Request: {}",ApplicationConstants.LOG_ENTRY_MESSAGE);
        log.info("The caseId received from BRASS:\n {}",caseId);
        FetchResponse resp = null;
        try{
            if(true) {
                throw new BBWException("500","Test");
                }
            resp = fetchActionService.fetchIt(caseId);

            log.debug("fetchaction Response: {}",resp.toString());

        } 
        catch (BBWException be) {
            throw be;
        }
        catch (Exception e) {
            throw new BBWException("500",e.getMessage());
        }
        return resp;
        }

}


@Api
@Path("/fetch_service")
public interface FetchAction {

    @GET
    @Path("/fetchaction/caseid/{caseid}")
    @Produces({MediaType.APPLICATION_JSON})
    //@Consumes({MediaType.TEXT_XML})
    @ApiOperation(
            value = "Respond BRASS Request",
            notes = "Returns a XML object "                 
    )
    @ApiResponses(
            value = {
                    @ApiResponse(code = 404, message = "Service not available"),
                    @ApiResponse(code = 500, message = "Unexpected Runtime error")
                    })
    public FetchResponse fetchActionRequest(@PathParam("caseid") String caseid) throws BBWException, Exception;

}`

    public class BBWException extends Exception {

            private static final long serialVersionUID = -7987978270260338068L;

            private String errorCode;
            private String errorMessage;

            public BBWException(String errorCode, String errorMessage) {
                super(errorMessage);
                this.errorCode = errorCode;
                this.errorMessage = errorMessage;
            }

            public String getErrorCode() {
                return errorCode;
            }


            public void setErrorCode(String errorCode) {
                this.errorCode = errorCode;
            }


            public String getErrorMessage() {
                return errorMessage;
            }
        public void setErrorMessage(String errorMessage) {
            this.errorMessage = errorMessage;
        }

        @Override
        public String toString() {

            return (this.errorCode + " " + this.errorMessage);
        }
}
4

1 回答 1

10

每次抛出(未捕获的)异常时,SpringBoot 都会返回Http-500 Internal Server Error. Spring中有很多处理异常的方法。

假设我有我的控制器并且我隐式地抛出了一个异常。

@RestController
public class HelloWorldController {

    @GetMapping("/hello-world")
    public String helloWorld() {
        throw new MyCustomException("I just can't say hello!");
    }
}

它和你的一样——你可以在异常中指定任何东西。

第一的:

处理它的一种方法是创建一个带有@ControllerAdvice注释的类。

@ControllerAdvice
public class GlobalExceptionHandler {

    private static final Logger LOGGER = LoggerFactory.getLogger(GlobalExceptionHandler.class);

    @ExceptionHandler(MyCustomException.class)
    public ResponseEntity<String> handlyMyCustomException(MyCustomException e) {
        logger.error("error occurred {}", e);
        return new ResponseEntity<>("Something happened: " + e.getMessage(), HttpStatus.I_AM_A_TEAPOT);
    }
}

这样,您就可以(全局)捕获您选择的异常并返回带有您选择的 HTTP 响应状态的消息,而不是必须I_AM_A_TEAPOT

第二:

    @ExceptionHandler(MyCustomException.class)
    public ResponseEntity<String> handlyMyCustomException(MyCustomException e) {
        logger.error("error occurred {}", e);
        return new ResponseEntity<>("Something happened: " + e.getMessage(), HttpStatus.I_AM_A_TEAPOT);
    }

你也可以@ExceptionHandler在你的控制器类中只创建带有注释的方法——但这不是全局的,并且只适用于这个确切的控制器调用。

结果如下:

结果就是这样

第三:

另一种处理异常的方法是创建自己的错误.html文件。如果您将文件放入resources/static/error/500.html其中,则应在Http-500 Internal Server Error抛出时返回。

于 2019-01-23T13:56:04.627 回答