一、ribbon（service-ribbon）

新建一個spring cloud專案

在啟動類加上@EnableDiscoveryClient註解，向服務中心註冊

@EnableDiscoveryClient
@SpringBootApplication
public class ServiceRibbonApplication {

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

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

 application.yml配置

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
server:
  port: 8764
spring:
  application:
    name: service-ribbon

測試service：

@Service
public class HelloService {

    @Autowired
    RestTemplate restTemplate;

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

測試controller：

@RestController
public class HelloControler {

    @Autowired
    HelloService helloService;

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

啟動http://localhost:8764/hi?name=forezp

 二、Feign（service-feign）

新建一個spring cloud專案，加入feign依賴

啟動類：加上@EnableFeignClients註解開啟Feign的功能

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class ServiceFeignApplication {

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

application.yml

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
server:
  port: 8765
spring:
  application:
    name: service-feign

測試service：

@FeignClient(value = "eureka-server")
public interface SchedualServiceHi {
    @RequestMapping(value = "/hi",method = RequestMethod.GET)
    String sayHiFromClientOne(@RequestParam(value = "name") String name);
}

測試controller：

@RestController
public class HiController {

    @Autowired
    SchedualServiceHi schedualServiceHi;
    @RequestMapping(value = "/hi",method = RequestMethod.GET)
    public String sayHi(@RequestParam String name){
        return schedualServiceHi.sayHiFromClientOne(name);
    }
}

啟動專案：http://localhost:8765/hi?name=forezp

原始碼：https://github.com/lrn-white/springcloud