springCloud學習第三天----遠程調用feign

我們要新建一個springboot服務，user-consumer 除了和之前創建eureka-client步驟都一樣以外還需要勾選feign支持

我們在eureka-client中加入代碼

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserService {
    @GetMapping("/login")
    public String login(){
        return "success1";
    }
}

再到user-consumer中

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class UserConsumerApplication {

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

}
啓動類要加入@EnableFeignClients註解，下面我們做個小栗子，

import com.example.userconsumer.userService.impl.UserServicImpl;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;

@FeignClient(name="eureka-client")
public interface UserService {
    @GetMapping("/login")
    String login();
}

 我們寫一個藉口，加上@FeignClient註解，name值就是eureka-client服務的名

接下來我們作一個模擬登陸的類，

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class Longin {
    @Autowired
    private UserService userService;

    @GetMapping("/userLogin")
    public String longin(){

        return userService.login();
    }
}

把接口注入，然後調用login方法，這樣就實現了遠程調用