使用ControllerAdvice自定义NohandLerexception响应

Question

我尝试在Spring Boot REST应用程序中实现一个自定义错误响应，以解决404个错误。 我阅读了Stackoverflow中介绍的许多解决方案，没有成功。

当我调用一个无效的入口点时，我会获得此结果：

{
    "timestamp": "2022-06-22T10:38:41.114+00:00",
    "status": 404,
    "error": "Not Found",
    "path": "/ws-facturx/fx2"
}

但是我想有一个应该这样的响应：

{
    "operationId": "u044eZg2gHwtadqxB5CVv6aeMBjj0w",
    "status": "ERROR",
    "operation": "webserviceName",
    "clientName": "ACME Inc",
    "errorMessage": "Error message from Server",
    "createdAt": "2022-06-22T09:15:04.844+00:00"
}

我首先尝试使用@RestControllerAdvice在投掷时拦截异常。

@ExceptionHandler(value = {AppServiceException.class, NoHandlerFoundException.class, ServletServiceException.class })
public ResponseEntity<Object> handleAppServiceException(Exception ex,
                                                        WebRequest req) throws JsonProcessingException {
    FacturxDto request = context.getFacturxDtoContext();
    ErrorMessage errorMessage = errorMessageBuilder(request, ex);
    return new ResponseEntity<>(errorMessage, new HttpHeaders(), HttpStatus.INTERNAL_SERVER_ERROR);
}

我还修改了我的应用程序

spring.mvc.throw-exception-if-no-handler-found=true
spring.web.resources.add-mappings=false

。我试图使用拦截器。 我向添加了一个用于将拦截器添加到InterceptorRegistry的课程：

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
    private final ApplicationExchangeContext context;

    public WebMvcConfig(ApplicationExchangeContext context) {
        this.context = context;
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new ApplicationInterceptor(context)).addPathPatterns("/**");
    }
}

我的ApplicationInterspection看起来像这样：

@Component
public class ApplicationInterceptor implements HandlerInterceptor {
    private final ApplicationExchangeContext context;

    @Autowired
    public ApplicationInterceptor(ApplicationExchangeContext context) {
        this.context = context;
    }

    //unimplemented methods comes here. Define the following method so that it
    //will handle the request before it is passed to the controller.
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if (response.getStatus() == HttpStatus.NOT_FOUND.value()) {
            // si on a un 404
            System.out.println(handler);
            String requestData = request.getReader().lines().collect(Collectors.joining());
            System.out.println(requestData);
            Gson gson = new Gson();
            FacturxDto facturxDto = gson.fromJson(requestData, FacturxDto.class);
            context.setFacturxDtoContext(facturxDto);
            throw new ServletServiceException("404...");
        }
        System.out.println("Done in preHandle");
        return true;
        // return HandlerInterceptor.super.preHandle(request, response, handler);
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        // HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
        System.out.println(request);
        System.out.println(response);
        if (response.getStatus() == HttpStatus.NOT_FOUND.value()) {
            // si on a un 404
            System.out.println(handler);
            String requestData = request.getReader().lines().collect(Collectors.joining());
            System.out.println(requestData);
            Gson gson = new Gson();
            FacturxDto facturxDto = gson.fromJson(requestData, FacturxDto.class);
            context.setFacturxDtoContext(facturxDto);
            throw new ServletServiceException("404...");
        }
        System.out.println("Done in afterCompletion");
    }
}

在预汉中，我确实到达了代码块的捕获部分，但我无法访问应该处理此例外并构建我的预期对象的RestControllerRADVICE方法。

抛出了例外。但是我不会将其退还给用户。相反，我确实有一个HTML页面。