SpringCloudFeign

• Z时代
• 2024-01-10
• 分类：综合

Feign集成了Ribbon，利用Ribbon维护了MicroServiceCloud-Dept的服务列表信息，并且通过轮询实现了客户端的负载均衡。而与Ribbon不同的是，通过feign只需要定义服务绑定接口且以声明式的方法，优雅而简单的实现了服务调用。

 集成feign

1 pom文件添加feign支持

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

2 注解接口服务 @FeignClient声明

package com.atguigu.springcloud.service;
import java.util.List;
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 com.atguigu.springcloud.entities.Dept;
@FeignClient(value = "MICROSERVICECLOUD")
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);
}
 

3 消费服务者添加feign支持，@EnableFeignClients(basePackages= {"com.atguigu.springcloud"})

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.atguigu.springcloud"})
@ComponentScan("com.atguigu.springcloud")
public class DeptConsumer80_Feign_App
{
  public static void main(String[] args)
  {
   SpringApplication.run(DeptConsumer80_Feign_App.class, args);
  }
}

以上是 SpringCloudFeign 的全部内容， 来源链接： utcz.com/z/513332.html