spring boot gateway 拦截微服务中所有异常
时间: 2024-12-11 20:37:21 浏览: 11
Spring Cloud Gateway的全局异常处理
Spring Boot Gateway是一个基于Spring Cloud的API网关,它用于统一管理和路由微服务的各种请求。如果你想拦截微服务中所有的异常,并提供统一的处理或日志记录,你可以通过全局错误处理器GlobalExceptionHandler来实现这个功能。
首先,在`application.yml`或`application.properties`配置文件中,添加对`global.error.handler`的设置:
```yaml
spring:
cloud:
gateway:
global-error-handler: your.global.error.handler.class
```
然后创建一个实现了`GlobalExceptionHandler`接口的自定义类,例如`MyGlobalExceptionHandler`:
```java
import org.springframework.boot.autoconfigure.web.ErrorAttributes;
import org.springframework.cloud.gateway.route.RouteLocator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.ModelAndView;
@ControllerAdvice
@Configuration
public class MyGlobalExceptionHandler {
private final ErrorAttributes errorAttributes;
private final RouteLocator routeLocator;
@Bean
public MyGlobalExceptionHandler(ErrorAttributes errorAttributes, RouteLocator routeLocator) {
this.errorAttributes = errorAttributes;
this.routeLocator = routeLocator;
return this;
}
@ResponseBody
public ResponseEntity<ErrorResponse> handleException(Exception ex) {
ErrorResponse responseError = new ErrorResponse();
responseError.setStatusCode(HttpStatus.valueOf(ex.getStatus()));
responseError.setMessage(errorAttributes.getErrorAttributes(null, false).get("message"));
// 根据需要,获取异常对应的路由信息并处理
String routeId = errorAttributes.getErrorAttributes(null, true).get("routeId");
if (routeId != null) {
try {
GatewayRoute route = routeLocator.getRoute(routeId);
responseError.setServiceName(route.getId());
} catch (Exception e) {
// 处理获取路由信息失败的情况
}
}
return new ResponseEntity<>(responseError, HttpStatus.INTERNAL_SERVER_ERROR);
}
private static class ErrorResponse {
private HttpStatus statusCode;
private String message;
private String serviceName; // 可选字段,如果从路由信息中获取到了
// getters and setters
}
}
```
在这个例子中,`handleException()`方法会捕获所有异常,将其转换为HTTP响应,并可以包含微服务名称的信息,以便于追踪问题来源。
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