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介绍

Feign集成了Ribbon，让客户端具有负载均衡的能力，同时简化了开发

github地址：https://github.com/erlieStar/spring-cloud-learning

1.项目配置如下

   	
    
     org.springframework.cloud
    	
    
     spring-cloud-starter-netflix-eureka-client
    
   
   	
    
     org.springframework.cloud
    	
    
     spring-cloud-starter-openfeign
    
   

application.yaml

server:  port: 9001spring:  application:    name: consumer-feigneureka:  client:    service-url:      defaultZone: http://localhost:7001/eureka

2.启动类加上@EnableFeignClients注解开启Feign的功能

@RestController@EnableEurekaClient@EnableFeignClients@SpringBootApplicationpublic class ConsumerFeign {
       public static void main(String[] args) {
           SpringApplication.run(ConsumerFeign.class);    }    @Autowired    private SimpleClient simpleClient;    @FeignClient(value = "producer-simple")    public interface SimpleClient {
           @RequestMapping("hello")        String hello(@RequestParam String name);    }    @RequestMapping("hello")    public String hello(@RequestParam String name) {
           return simpleClient.hello(name);    }}

启动eureka-service（spring-cloud-eureka）

访问http://localhost:9001/hello?name=xiaoshi

交替显示

hello xiaoshi, I am from port: 8001hello xiaoshi, I am from port: 8002

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参考博客

[1]https://www.fangzhipeng.com/springcloud/2018/08/03/sc-f3-feign.html

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