Eureka多服务调用

 所以我们需要写入公共模块

自己随便写入然后在pom中添加

并且在订单中调用用户服务需要使用restTemlate这个

UserController

package cn.jiedada.web.controller;

import cn.jiedada.domain.User;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/provider")
public class UuserController {
    @RequestMapping("/")
    public String home() {
        return "Hello world";
    }

    @RequestMapping(value = "/user/{id}",method = RequestMethod.GET)
    public User getUserById(@PathVariable("id") Long id){
        System.out.println("这是user中的getUser方法被调用");
        return new User(id,"user");
    }
}

OrderController

package cn.jiedada.web.controller;

import cn.jiedada.domain.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@RequestMapping("/customer")
public class OrderController {
    @Autowired
    private RestTemplate restTemplate;

    @RequestMapping("/")
    public String home() {
        return "Hello world";
    }
    /*这个方法是我们去掉user_service_2000中的数据
    所以需要使用restTemplate的类
    * */
    @RequestMapping("/order/{id}")
    public User getUserById(@PathVariable("id")Long id){
        //拼接字符串
        String url="http://localhost:2000/provider/user/"+id;
        //通过这个方法调用我们的
        return restTemplate.getForObject(url,User.class);
    }
}

RestTemplate

package cn.jiedada.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

@Configuration
public class WebConfig {
    @Bean
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }
}

出现这个页面