1.pom.xml

                 
      
       org.springframework.cloud
                  
      
       spring-cloud-starter-openfeign
                  
      
       2.0.2.RELEASE
              
     

2.UserConsumerDemoApplication.java

@EnableFeignClients

 

3.UserClient.java

package cn.itcast.user.client;import cn.itcast.user.pojo.User;import org.springframework.cloud.openfeign.FeignClient;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.PathVariable;@FeignClient("user-service")public interface UserClient {    @GetMapping("{id}")    User getUserQueryInfo(@PathVariable("id") Long id);}

 

4.UserFController.java

package cn.itcast.user.controller;import cn.itcast.user.client.UserClient;import cn.itcast.user.pojo.User;import com.netflix.hystrix.contrib.javanica.annotation.DefaultProperties;import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import org.springframework.web.client.RestTemplate;@RestController@RequestMapping("consumerF")@DefaultProperties(defaultFallback = "queryUserByIdFallback")public class UserFController {    @Autowired    private UserClient userClient;    @GetMapping("{id}")    public User queryUserById(@PathVariable("id") Long id){        return userClient.getUserQueryInfo(id);    }    public String queryUserByIdFallback(){        return "用户信息查询出现异常！";    }}