spring 使用feign消費服務

在之前的maven項目中，依舊新建一個spring boot項目，過程略，建完後，以下是我的pom

<dependencies>

   <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <optional>true</optional>
   </dependency>
   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
      <exclusions>
         <exclusion>
            <groupId>org.junit.vintage</groupId>
            <artifactId>junit-vintage-engine</artifactId>
         </exclusion>
      </exclusions>
   </dependency>
   <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-commons</artifactId>
      <version>2.2.0.RELEASE</version>
      <scope>compile</scope>
   </dependency>
   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-autoconfigure</artifactId>
      <version>2.2.2.RELEASE</version>
      <scope>compile</scope>
   </dependency>

   <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-netflix-eureka-client -->
   <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
      <version>2.1.2.RELEASE</version>
   </dependency>

   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
   </dependency>
   <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-openfeign -->
   <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-openfeign</artifactId>
      <version>2.1.0.RELEASE</version>
   </dependency>

   <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-netflix-eureka-client</artifactId>
      <version>2.2.0.RELEASE</version>
      <scope>compile</scope>
   </dependency>

</dependencies>

啓動類加上如下註解

新建一個接口，調用註冊中心的服務

service-hi 表示服務的名稱，hi表示調用哪個接口

暴露一個controller訪問測試

啓動service-hi 兩次，端口分別爲8762 、8773.

方法爲，第一次正常啓動，第二次修改端口號爲8773以後再啓動一次，如果第二次不能啓動，按照如下方法修改

最後：

啓動程序，多次訪問http://localhost:8765/hi?name=forezp,瀏覽器交替顯示：

hi forezp,i am from port:8762

hi forezp,i am from port:8763