项目地址：

github地址

1.在公共引用项目debugggcloud_api项目加入引用Feign的支持

<dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-feign</artifactId></dependency>

2.在消费者项目里面加入该引用

<dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-feign</artifactId></dependency>

3.在公共引用项目创建DeptClientService接口类

package com.debuggg.cloud.service;import com.debuggg.cloud.entities.Dept;
import org.springframework.cloud.netflix.feign.FeignClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;import java.util.List;@FeignClient(value = "DEBUGGGCLOUD-DEPT")
public interface DeptClientService {@RequestMapping(value = "/dept/get/{id}",method = RequestMethod.GET)public Dept get(@PathVariable("id") long id);@RequestMapping(value = "/dept/list",method = RequestMethod.GET)public List<Dept> list();@RequestMapping(value = "/dept/add",method = RequestMethod.POST)public boolean add(Dept dept);
}

注意接口上面的@FeignClient(value="DEBUGGGCLOUD-DEPT")，此处需要该注解

4.将消费者项目里面的DeptConsumerController的代码的调用方式由RestTemplate的调用方式修改为DeptClientService调用方式调用

原来代码：

package com.debuggg.cloud.controller;import com.debuggg.cloud.entities.Dept;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;import java.util.List;@RestController
public class DeptConsumerController {//    private static final String PREFIX = "http://localhost:8001/";private static final String PREFIX = "http://DEBUGGGCLOUD-DEPT";@Autowiredprivate RestTemplate restTemplate;@RequestMapping(value = "/consumer/dept/list")public List<Dept> list(){return restTemplate.getForObject(PREFIX + "/dept/list", List.class);}@RequestMapping(value = "/consumer/dept/get/{id}")public Dept get(@PathVariable("id") Long id){return restTemplate.getForObject(PREFIX + "/dept/get/" + id, Dept.class);}@RequestMapping(value = "/consumer/dept/add")public Boolean add(Dept dept){return restTemplate.postForObject(PREFIX + "/dept/add" ,dept, Boolean.class);}//测试@EnableDiscoveryClient,消费端可以调用服务发现@RequestMapping(value="/consumer/dept/discovery")public Object discovery(){return restTemplate.getForObject(PREFIX+"/dept/discovery", Object.class);}
}

修改后代码：

package com.debuggg.cloud.controller;import com.debuggg.cloud.entities.Dept;
import com.debuggg.cloud.service.DeptClientService;
import org.springframework.beans.factory.annotation.Autowired;
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;import java.util.List;@RestController
public class DeptConsumerController {@Autowiredprivate DeptClientService service = null;@RequestMapping(value = "/consumer/dept/list")public List<Dept> list(){return this.service.list();}@RequestMapping(value = "/consumer/dept/get/{id}")public Dept get(@PathVariable("id") Long id){return this.service.get(id);}@RequestMapping(value = "/consumer/dept/add")public Boolean add(Dept dept){return this.service.add(dept);}
}

5.在启动类加入注解@EnableFeignClients

package com.debuggg.cloud;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.feign.EnableFeignClients;@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients(basePackages= {"com.debuggg.cloud"})
public class DeptConsumer10001_App {public static void main(String[] args) {SpringApplication.run(DeptConsumer10001_App.class,args);}
}

启动测试