Eureka + Ribbon + RestTemplate 负载均衡

Step 5-1：使用 Spring Initializr 创建 Spring Boot 项目

选择如下配置

         

注：不熟悉如何搭建Spring Boot 项目，请点击

 

Step 5-2：创建配置文件 application.yml，内容如下

                                                                   

server:
  port: 8764
spring:
  application:
    name: service-ribbon

#如果没有eureka下边配置不用写
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

 

Step 5-3：编写启动类 @EnableDiscoveryClient

    注意：通过@EnableDiscoveryClient向服务中心注册；

@SpringBootApplication
@EnableDiscoveryClient
public class ServiceRibbonApplication {

	public static void main(String[] args) {
		SpringApplication.run(ServiceRibbonApplication.class, args);
	}

	@Bean
	@LoadBalanced
	RestTemplate restTemplate() {
		return new RestTemplate();
	}

}

 Step 5-4：编写Service 

@Service
public class HelloService {

    @Autowired
    RestTemplate restTemplate;

    public String hiService(String name) {
        return restTemplate.getForObject("http://SERVICE-HI/hi?name="+name,String.class);
    }

}

  

Step 5-5：编写Contorller @RestController

/**
 * Created by fangzhipeng on 2017/4/6.
 */
@RestController
public class HelloControler {

    @Autowired
    HelloService helloService;
    @RequestMapping(value = "/hi")
    public String hi(@RequestParam String name){
        return helloService.hiService(name);
    }


}

启动后效果：访问 http://localhost:8764/hi?name=forezp                           

浏览器交替显示：

hi forezp,i am from port:8762

hi forezp,i am from port:8763