Question

我的Spring Boot应用程序提供以下REST控制器：

@RestController
@RequestMapping("/api/verify")
public class VerificationController {

    final VerificationService verificationService;

    Logger logger = LoggerFactory.getLogger(VerificationController.class);

    public VerificationController(VerificationService verificationService) {
        this.verificationService = verificationService;
    }

    @GetMapping
    public void verify(
            @RequestParam(value = "s1") String s1,
            @RequestParam(value = "s2") String s2) {     
        try {
            verificationService.validateFormat(s1, s2);
        } catch (InvalidFormatException e) {
            throw new ResponseStatusException(HttpStatus.BAD_REQUEST, e.getMessage());
        }
    }
}

如果validateFormat()抛出InvalidFormatException，客户端将获得正确的HTTP 400。但是，默认的JSON响应主体如下所示：

{
    "timestamp": "2020-06-18T21:31:34.911+00:00",
    "status": 400,
    "error": "Bad Request",
    "message": "",
    "path": "/api/verify"
}

message值始终为空，即使我这样对其进行硬编码：

throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "some string");

这是异常类：

public class InvalidFormatException extends RuntimeException {

    public InvalidFormatException(String s1, String s2) {
        super(String.format("Invalid format: [s1: %s, s2: %s]", s1, s2));
    }
}

Answer 1

此行为已在Spring Boot 2.3中更改，并且是故意的。有关详细信息，请参见release notes。

在server.error.include-message=always中设置application.properties可解决此问题。

Answer 2

设置 server.error.include-message=always 会披露内部异常的消息，这可能是生产环境中的问题。

另一种方法是使用 ExceptionHandler。您可以在此处控制传输到客户端的内容：

@ControllerAdvice
public class GlobalExceptionHandler {
    @ExceptionHandler(ResponseStatusException.class)
    public ResponseEntity<String> handleBadRequestException(ResponseStatusException ex) {
        // if you want you can do some extra processing with message and status of an exception 
        // or you can return it without any processing like this:
        return new ResponseEntity<>(ex.getMessage(), ex.getStatus());
    }
}

在Spring Boot中引发ResponseStatusException时，响应中不包含异常消息

2 个答案: