fix:网关

springcloud-service-zuul/pom.xml

@@ -32,6 +32,11 @@
             <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
         </dependency>
 
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
+        </dependency>
+
     </dependencies>
 
     <build>

springcloud-service-zuul/src/main/java/com/kwan/springcloud/GoodsServiceFallBackProvider.java

+package com.kwan.springcloud;
+
+
+import org.springframework.cloud.netflix.zuul.filters.route.FallbackProvider;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.client.ClientHttpResponse;
+import org.springframework.stereotype.Component;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * FallbackProvider（请求异常处理）
+ * <p>
+ * 网关的默认回退FallbackProvider的机制只适用于通过配置文件中配置的url来跨服务调用，而不拦截通过FeignClient跨服务调用，
+ * 也就是说要自己实现一个FeignClient服务的fallback才可以，但是如果通过FeignClient的服务要是特别多怎么办，每一个都要写一个不得累死，
+ * 这里想到了通过网关的错误过滤器来统一处理FeignClient跨服务调用出错的问题
+ *
+ * @author : qinyingjie
+ * @version : 2.2.0
+ * @date : 2023/1/11 12:48
+ */
+@Component
+public class GoodsServiceFallBackProvider implements FallbackProvider {
+
+    @Override
+    public String getRoute() {
+        return "goods-service";
+    }
+
+    @Override
+    public ClientHttpResponse fallbackResponse(String route, Throwable cause) {
+        return new ClientHttpResponse() {
+
+            @Override
+            public HttpHeaders getHeaders() {
+                HttpHeaders headers = new HttpHeaders();
+                headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
+                return headers;
+            }
+
+            @Override
+            public InputStream getBody() throws IOException {
+                return new ByteArrayInputStream("order-service is not available!".getBytes());
+            }
+
+            @Override
+            public HttpStatus getStatusCode() throws IOException {
+                return HttpStatus.BAD_REQUEST;
+            }
+
+            @Override
+            public int getRawStatusCode() throws IOException {
+                return this.getStatusCode().value();
+            }
+
+            @Override
+            public String getStatusText() throws IOException {
+                return this.getStatusCode().getReasonPhrase();
+            }
+
+            @Override
+            public void close() {
+
+            }
+        };
+    }
+
+}

springcloud-service-zuul/src/main/java/com/kwan/springcloud/ZuulApplication.java

 package com.kwan.springcloud;
 
 
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
+
 @EnableZuulProxy
 @SpringBootApplication
 public class ZuulApplication {

springcloud-service-zuul/src/main/java/com/kwan/springcloud/filter/MyZuulFilter.java

+package com.kwan.springcloud.filter;
+
+import com.netflix.zuul.ZuulFilter;
+import com.netflix.zuul.context.RequestContext;
+import com.netflix.zuul.exception.ZuulException;
+import org.springframework.stereotype.Component;
+
+import javax.servlet.http.HttpServletRequest;
+
+@Component
+public class MyZuulFilter extends ZuulFilter {
+    /**
+     * 表示当前的过滤器是否被调用
+     */
+    @Override
+    public boolean shouldFilter() {
+        return true;
+    }
+
+    /**
+     * filterOrder表示执行的优先级，值越小表示优先级越高
+     */
+    @Override
+    public int filterOrder() {
+        return 0;
+    }
+
+    /**
+     * pre:		在请求被路由之前调用
+     * routing: 	在请求被路由之中调用
+     * post: 		在请求被路由之后调用
+     * error: 		处理请求发生错误时调用
+     */
+    @Override
+    public String filterType() {
+        return "pre";
+    }
+
+    /**
+     * 真正执行Filter逻辑的方法
+     */
+    @Override
+    public Object run() throws ZuulException {
+        RequestContext ctx = RequestContext.getCurrentContext();
+        HttpServletRequest request = ctx.getRequest();
+        System.err.println("--------------uri: -------------- " + request.getRequestURI());
+        return ctx;
+    }
+}
\ No newline at end of file

springcloud-service-zuul/src/main/resources/application.yaml

@@ -6,6 +6,17 @@ spring:
   application:
     name: zuul-service #服务名称
 
+#路由规则：
+zuul:
+  sensitiveHeaders: Cookie,Set-Cookie,Authorization
+  routes:
+    api-portal:
+      path: /portal-service/**  #访问路径：http:/localhost:5001/hello-service/hello
+      serviceId: portal-service
+    api-goods:
+      path: /goods-service/**
+      serviceld: goods-service
+
 #服务提供者
 eureka:
   client: