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java - @ControllerAdvice 和 @ExceptionHandler 没有被我的 RestController 触发

转载 作者:行者123 更新时间:2023-12-04 21:02:13 26 4
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为了在整个应用程序中统一异常处理,我使用了 Error Handling for REST with Spring使用 @ControllerAdvice 的解决方案#3连同 @ExceptionHandler .

Spring 版本:4.3.22.RELEASE

Spring Boot 版本:1.5.19.RELEASE

这是一个 Spring 启动应用程序,以下是我的包结构。

src/main/java
com.test.app.controller
MyRestController.java -- This is my Rest controller
com.test.app.handler
RestExceptionHandler.java -- This is my ControllerAdvice class

以下是我的 ControllerAdvice 代码,其中一个 Controller 抛出 InvalidDataException但还是对应的 @ExceptionHandler不叫。相反,我得到了 Unexpected 'e'作为带有 h​​ttp 400 的响应正文。
@ControllerAdvice
public class RestExceptionHandler {

@ExceptionHandler(InvalidDataException.class)
@ResponseStatus(value = HttpStatus.BAD_REQUEST)
public @ResponseBody ErrorResponse handleValidationError(final InvalidDataException ex,
final WebRequest request) {
log.error("InvalidDataException message:{} ", ex.getMessage());
return getExceptionResponse("Failed with Invalid data" + ex.getMessage(), HttpStatus.BAD_REQUEST.value());
}


private ErrorResponse getExceptionResponse(final String message, final Integer errorCode) {
final ErrorResponse exceptionResponse = new ErrorResponse();
exceptionResponse.setErrorCode(errorCode.toString());
exceptionResponse.setErrorDescription(message);
log.error("message:{}", exceptionResponse);
return exceptionResponse;
}
}

我查看了 SO 上的其他帖子以及他们提到使用 @EnableWebMvc 的其他论坛。和 @ComponentScan等,但没有任何帮助。有人可以帮我理解我错过了什么吗?

以下是我的 Controller和相应的界面。
@RestController
public class MyRestController implements MyApi {

@Override
public ResponseEntity<List<MyResponse>> myGet(@RequestHeader(value = "a") String a,
@RequestHeader(value = "b") String b,
@RequestHeader(value = "c") String c,
@RequestHeader(value = "d") String d,
@RequestHeader(value = "e") String e,
@RequestHeader(value = "f") String f,
@RequestHeader(value = "g") String g) {

List<MyResponse> responses = service.getData(c, d, e, f); // This throws exception
return new ResponseEntity<>(responses, HttpStatus.OK);
}
}


@Validated
@Api(value = "My", description = "the My API")
//This is generated interface through swagger codegen
public interface MyApi {

@ApiOperation(value = "", nickname = "myGet", notes = "", response = MyResponse.class, responseContainer = "List")
@ApiResponses(value = {
@ApiResponse(code = 200, message = "normal response", response = MyResponse.class, responseContainer = "List"),
@ApiResponse(code = 400, message = "Request is invalid", response = ErrorResponse.class),
@ApiResponse(code = 401, message = "", response = ErrorResponse.class),
@ApiResponse(code = 404, message = "", response = ErrorResponse.class),
@ApiResponse(code = 405, message = "", response = ErrorResponse.class),
@ApiResponse(code = 409, message = "", response = ErrorResponse.class),
@ApiResponse(code = 500, message = "Internal Server Error", response = ErrorResponse.class),
@ApiResponse(code = 503, message = "Service Unavailable", response = ErrorResponse.class) })
@RequestMapping(value = "/v1/test",
produces = { "application/json" },
method = RequestMethod.GET)
default ResponseEntity<List<MyResponse>> myGet(@ApiParam(value = "a" ,required=true) @RequestHeader(value="a", required=true) String a,
@ApiParam(value = "b" ,required=true) @RequestHeader(value="b", required=true) String b,
@ApiParam(value = "c" ,required=true) @RequestHeader(value="c", required=true) String c,
@ApiParam(value = "d" ,required=true) @RequestHeader(value="d", required=true) String d,
@ApiParam(value = "e" ,required=true) @RequestHeader(value="e", required=true) String e,
@ApiParam(value = "f" ,required=true) @RequestHeader(value="f", required=true) String f,
@ApiParam(value = "g" ,required=true) @RequestHeader(value="g", required=true) String g) {
getRequest().ifPresent(request -> {
for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
ApiUtil.setExampleResponse(request, "application/json", "{ \"aNum\" : 0, \"cNum\" : \"cNum\"}");
break;
}
}
});
return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
}
}

以下是我的 GlobalExceptionHandler 中的代码片段
class GlobalExceptionHandler extends ExceptionHandlerExceptionResolver implements HandlerExceptionResolver, Ordered, InitializingBean {
...
@Override
protected ServletInvocableHandlerMethod getExceptionHandlerMethod(HandlerMethod handlerMethod, Exception exception) {
if (exception instanceof com.myframework.SystemException) {
return new ServletInvocableHandlerMethod(this, exceptionMethods.get(com.myframework.SystemException.class.getName()));
} else if (exception instanceof GenericApplicationException) {
return new ServletInvocableHandlerMethod(this, exceptionMethods.get(com.myframework.GenericApplicationException.class.getName()));
} else {
return null;
}
}
....
}

最佳答案

它应该工作。导致它失败的一些可能原因可能是:

  • RestExceptionHandler还没有声明为 spring bean 吗? @SpringBootApplication默认情况下只会扫描 spring beans 以在其包及其所有子包下注册。
  • Controller 居然不扔InvalidDataException但其他异常(exception)?

  • 无论如何,我建议您进行以下更改以检查 RestExceptionHandler被调用。

    在您的 Spring Boot 主应用程序类中,显式注册 RestExceptionHandler作为使用 @Import 的 spring bean

    @SpringBootApplication
    @Import(RestExceptionHandler.class)
    public class Application {

    public static void main(String[] args) {
    SpringApplication.run(Application.class, args);
    }
    }

    也在 RestExceptionHandler ,还包括一个方法来捕捉最通用的 Exception :

    @ControllerAdvice
    public class RestExceptionHandler {

    @ExceptionHandler(Exception.class)
    @ResponseStatus(value = HttpStatus.BAD_REQUEST)
    public ErrorResponse handleGenericException(final Exception ex ,final WebRequest request) {
    System.out.println("handleGenericException ....");
    return getExceptionResponse("Failed with Invalid data" + ex.getMessage(), HttpStatus.BAD_REQUEST.value());
    }
    }

    如果 RestExceptionHandler,请告诉我进行这些更改后将被调用。

    关于java - @ControllerAdvice 和 @ExceptionHandler 没有被我的 RestController 触发,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/57779303/

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