Feign 在 SpringCloud 中的使用 四

此处就单纯写一个消费者服务，通过Feign来调用生产者中的接口，生产者中的接口可以自己随便定义一个，前面博客中也有代码

1.导入springcloud Feign的jar包

<parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.0.2.RELEASE</version>
  </parent>

  <dependencyManagement>
      <dependencies>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-dependencies</artifactId>
             <version>Finchley.SR2</version>
             <type>pom</type>
             <scope>import</scope>
         </dependency>
     </dependencies>
  </dependencyManagement>

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

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>

      <dependency>
          <groupId>org.springframework.cloud</groupId>
          <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
      </dependency>
　　　　
      <dependency>
          <groupId>org.springframework.cloud</groupId>
          <artifactId>spring-cloud-starter-openfeign</artifactId>
      </dependency>

      <!-- 热部署 -->
      <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-devtools</artifactId>
          <optional>true</optional>
          <scope>true</scope>
      </dependency>
  </dependencies>

2.生产者 Client 接口

import com.idelan.platform.model.User;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@FeignClient("smart-platform-base")
public interface TestClient {

    @RequestMapping(method = RequestMethod.GET, value = "/platform/base/getUser")
    public User getUser();
}

public class User {
    private int id;
    private String userName;
    private String sex;
    private int age;
    private String createTime;
    private String message;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getCreateTime() {
        return createTime;
    }

    public void setCreateTime(String createTime) {
        this.createTime = createTime;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
}

3.测试Controller

　　@Autowired
    private TestClient testClient;

    @GetMapping(value = "/getUser")
    public User getUser() {
       return testClient.getUser();
    }

4.SpringCloud 注解翻译器翻译了4个注解

@RequestMapping

@Requestparam

@RequestHeader

@PathVariable