package com.springcloudribbonclient;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.openfeign.EnableFeignClients;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication
//@EnableDiscoveryClient
@EnableFeignClients
public class SpringCloudRibbonClientApplication {
	public static void main(String[] args) {
		SpringApplication.run(SpringCloudRibbonClientApplication.class, args);
	}
}

package com.springcloudribbonclient.service;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
//Feign注解，value为服务提供者的serviceId
@FeignClient(value = "SPRING-CLOUD-EUREKA-CLIENT")
public interface FeignServiceDemo {
    //配置服务提供者的URI及相关参数，此注解与SpringMVC通用
    @RequestMapping(value = "/hello", method = RequestMethod.GET, produces = "application/json; charset=UTF-8")
    String hello1();
}

package com.springcloudribbonclient.controller;

import com.springcloudribbonclient.service.FeignServiceDemo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
public class ConsumerController {
    //注入接口
    @Autowired
    private FeignServiceDemo feignServiceDemo;

    @GetMapping(value = "/hello1")
    public String hello1() {
        String result = feignServiceDemo.hello1();
        System.out.println("feigh:"+result);
        return  result;
    }
}