Java Ribbon与openfeign区别和用法讲解

@Bean("restTemplate")
@LoadBalanced // 实现本地的负载均衡
public RestTemplate restTemplate(){
    return new RestTemplate();
}

@RequestMapping("/orderToMember")
public String orderToMember() {
     // 使用本地rest形式实现rpc调用
     String result = restTemplate.getForObject("http://kaico-member/getUser", String.class);
     return "订单调用会员获取结果:" + result;
 }

@RequestMapping("/orderToMember")
public String orderToMember() {
    // 使用本地rest形式实现rpc调用
    ServiceInstance choose = loadBalancerClient.choose("kaico-member");
    return "获取结果:" + choose;
}

public interface MenberService {
    /**
     * 提供会员接口
     *
     * @param userId
     * @return
     */
    @GetMapping("/getUser")
    String getUser(@RequestParam("userId") Long userId);
}

@RestController
public class MenberServiceImpl  implements MenberService {
    @Value("${server.port}")
    private String serverPort;
    @Override
    public String getUser(Long userId) {
        return "我是会员服务端口号为:" + serverPort;
    }
}

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
    <version>2.0.0.RELEASE</version>
</dependency>

@FeignClient(name = "kaico-member")
public interface MenberServiceFeign{
    /**
     * 提供会员接口
     *
     * @param userId
     * @return
     */
    @GetMapping("/getUser")
    String getUser(@RequestParam("userId") Long userId);
}

@Autowired
private MenberServiceFeign menberServiceFeign;
@RequestMapping("/orderToMember")
public String orderToMember() {
    //测试openfeign 调用接口
    String user = menberServiceFeign.getUser(1L);
    return "获取结果:" + user;
}