Spring Cloud Gateway整合Eureka应用

短命女 2023-02-26 09:26 21阅读 0赞

## SpringCloud视频教程： ##

[https://ke.qq.com/course/2805647?tuin=a3e3fb1&from\_uin=171851697&from=1000201007][https_ke.qq.com_course_2805647_tuin_a3e3fb1_from_uin_171851697_from_1000201007]

## 个人博客纯净版 ##

[http://www.51ufo.cn/%E5%BE%AE%E6%9C%8D%E5%8A%A1/%E5%88%86%E5%B8%83%E5%BC%8F/2020/07/11/SpringCloud%E5%85%A5%E9%97%A823-Spring-Cloud-Gateway%E6%95%B4%E5%90%88Eureka%E5%BA%94%E7%94%A8.html][http_www.51ufo.cn_E5_BE_AE_E6_9C_8D_E5_8A_A1_E5_88_86_E5_B8_83_E5_BC_8F_2020_07_11_SpringCloud_E5_85_A5_E9_97_A823-Spring-Cloud-Gateway_E6_95_B4_E5_90_88Eureka_E5_BA_94_E7_94_A8.html]

前面我们学习了路由转发，但是目标服务配置的都是外部服务的形势，那么网关能够通过注册的Eureka注册中心，实现内部服务的转发吗？答案是肯定的，下面我们来具体实现一下

下面的示例启动两个服务：service-gataway 和 eureka-client-provider 都注册到注册中心 Eureka上，客户端请求后端服务【eureka-client-provider】,网关提供后端服务的统一入口。网关通过负载均衡将客户端请求转发到具体的后端服务。

<table> 
 <thead> 
  <tr> 
   <th>序号</th> 
   <th>服务名称</th> 
   <th>端口号</th> 
   <th>备注</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>1</td> 
   <td>gateway-server</td> 
   <td>80</td> 
   <td>网关服务</td> 
  </tr> 
  <tr> 
   <td>2</td> 
   <td>eureka-client-provider</td> 
   <td>8080</td> 
   <td>服务提供者</td> 
  </tr> 
  <tr> 
   <td>3</td> 
   <td>eureka-server</td> 
   <td>8761</td> 
   <td>注册中心</td> 
  </tr> 
 </tbody> 
</table>

**具体实现**

首先在service-gateway服务的pom.xml中添加以下依赖：

<dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>

在工程的配置文件application.yml中，配置信息如下：

spring:
      cloud:
        gateway:
          discovery:
            locator:
              enabled: true
              lower-case-service-id: true
    eureka:
      client:
        serviceUrl:
          defaultZone: http://localhost:8761/eureka/
      instance:
        prefer-ip-address: true
        instance-id: ${spring.cloud.client.ip-address}:${server.port}

分别启动eureka-server eureka-client-provider service-gateway 服务，在浏览器访问[http://localhost:8761/][http_localhost_8761]，注册中心显示如下：

![gateway-eureka.png][]

在浏览器访问[http://localhost/eureka-client-provider/hello?name=xiaoming&token=123][http_localhost_eureka-client-provider_hello_name_xiaoming_token_123]，返回如下：

hello, xiaoming, 我是服务提供者:端口为：8080

此时说明网关转发内部服务成功

本文代码git地址 [https://gitee.com/xmingtx/springcloud-lesson.git][https_gitee.com_xmingtx_springcloud-lesson.git]

[https_ke.qq.com_course_2805647_tuin_a3e3fb1_from_uin_171851697_from_1000201007]: https://ke.qq.com/course/2805647?tuin=a3e3fb1&from_uin=171851697&from=1000201007
[http_www.51ufo.cn_E5_BE_AE_E6_9C_8D_E5_8A_A1_E5_88_86_E5_B8_83_E5_BC_8F_2020_07_11_SpringCloud_E5_85_A5_E9_97_A823-Spring-Cloud-Gateway_E6_95_B4_E5_90_88Eureka_E5_BA_94_E7_94_A8.html]: http://www.51ufo.cn/%E5%BE%AE%E6%9C%8D%E5%8A%A1/%E5%88%86%E5%B8%83%E5%BC%8F/2020/07/11/SpringCloud%E5%85%A5%E9%97%A823-Spring-Cloud-Gateway%E6%95%B4%E5%90%88Eureka%E5%BA%94%E7%94%A8.html
[http_localhost_8761]: http://localhost:8761/
[gateway-eureka.png]: /images/20230209/3a72411566e04abfb6fa4bb838c50b98.png
[http_localhost_eureka-client-provider_hello_name_xiaoming_token_123]: http://localhost/eureka-client-provider/hello?name=xiaoming&token=123
[https_gitee.com_xmingtx_springcloud-lesson.git]: https://gitee.com/xmingtx/springcloud-lesson.git