spring 使用feign消费服务

在之前的maven项目中，依旧新建一个spring boot项目，过程略，建完后，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>

启动类加上如下注解

新建一个接口，调用注册中心的服务

service-hi 表示服务的名称，hi表示调用哪个接口

暴露一个controller访问测试

启动service-hi 两次，端口分别为8762 、8773.

方法为，第一次正常启动，第二次修改端口号为8773以后再启动一次，如果第二次不能启动，按照如下方法修改

最后：

启动程序，多次访问http://localhost:8765/hi?name=forezp,浏览器交替显示：

hi forezp,i am from port:8762

hi forezp,i am from port:8763