Eureka注册客户端

1.pom.xml

<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            <version>2.0.2.RELEASE</version>
        </dependency>

　　2.application.yaml

server:
  port: 8888
spring:
  datasource:
    url: jdbc:mysql://127.0.0.1:3306/test?characterEncoding=utf8&serverTimezone=UTC
    username: root
    password:
  application:
    name: user-service
mybatis:
  type-aliases-package: cn.itcast.user.pojo
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:8886/eureka

 3.入口文件 UserApplication.java

package cn.itcast;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import tk.mybatis.spring.annotation.MapperScan;

@EnableDiscoveryClient
@SpringBootApplication
@MapperScan("cn.itcast.user.mapper")
public class UserApplication {
    public static void main(String[] args) {
        SpringApplication.run(UserApplication.class);
    }
}

4.UserController.java

package cn.itcast.user.controller;

import cn.itcast.user.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
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;

import java.util.List;

@RestController
@RequestMapping("consumer")
public class UserController {
    @Autowired
    private RestTemplate restTemplate;
    @Autowired
    private DiscoveryClient discoveryClient;

    @GetMapping("{id}")
    public User queryUserById(@PathVariable("id") Long id){
        List<ServiceInstance> instances = discoveryClient.getInstances("user-service");
        ServiceInstance instance = instances.get(0);
        String url = "http://"+instance.getHost()+":"+instance.getPort()+"/user/" + id;
        User user = restTemplate.getForObject(url, User.class);
        return  user;
    }
}