目录

一，创建服务注册发现中心工程：lj-cloud-server-eureka

 二，创建服务提供者：lj-cloud-provider1

三，创建消费者:lj-cloud-sonsumer

参考：https://blog.csdn.net/weixin_38023579/article/details/81328524

一，创建服务注册发现中心工程：lj-cloud-server-eureka

 

 删掉application.properties,新建application.yml

spring:
  application:
    name: server-eureka

#  服务注册中心的端口
server:
  port: 8761

eureka:
  instance:
    hostname: localhost
  client:
    #    表示是否将自己注册到 Eureka Server
    register-with-eureka: false
    #    表示是否从 Eureka Server 获取注册信息
    fetch-registry: false
    #    设置与 Eureka Server 交互的地址，查询服务和注册服务都需要依赖这个地址
    service-url:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

启动类添加注解：@EnableEurekaServer

package com.example.ljcloudservereureka;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@SpringBootApplication
@EnableEurekaServer
public class LjCloudServerEurekaApplication {

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

        System.out.println("---服务监控访问地址"+"http://localhost:8761");
    }

}

 启动项目，启动成功后访问地址：http://localhost:8761

 二，创建服务提供者：lj-cloud-provider1

 

注：用controller要导入spring web

# 应用端口
server:
  port: 7901
spring:
  application:
    # 应用名称
    name: provider-user

# eureka 配置
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka

logging:
  level:
    root: INFO

 

package com.example.ljcloudprovider1;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

@SpringBootApplication
@EnableEurekaClient  //表明这是一个eureka客户端
public class LjCloudProvider1Application {

    public static void main(String[] args) {
        SpringApplication.run(LjCloudProvider1Application.class, args);

        System.out.println("---ljcloudprovider1 服务监控访问地址"+"http://localhost:7901");
    }

}

 创建UserController,用来提供测试用的服务

 

package com.example.ljcloudprovider1.controller;

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

@RestController
@RequestMapping("/user")
public class UserController {
    @RequestMapping("/sayHello")
    public String sayhello(){
        return "I`m provider 1 ,Hello consumer!";
    }
    @RequestMapping("/sayHi")
    public String sayHi(){
        return "I`m provider 1 ,Hi consumer!";
    }
}

 右键运行服务提供端（在此之前需先启动server-eureka）

 启动后，刷新 http://localhost:8761/

 

 成功！

三，创建消费者:lj-cloud-sonsumer

 

# 应用端口
server:
  port: 8002
spring:
  application:
    # 应用名称
    name: lj-cloud-consumer

# eureka 配置
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka

logging:
  level:
    root: INFO

package com.example.ljcloudconsumer.service;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@FeignClient("provider-user")
public interface UserClient {

    @RequestMapping(value="/user/sayHello",method=RequestMethod.GET)
    public String sayHello();

    @RequestMapping(value="/user/sayHi",method= RequestMethod.GET)
    public String sayHi();

}

 

package com.example.ljcloudconsumer.controller;

import com.example.ljcloudconsumer.service.UserClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @Autowired
    private UserClient feignClient;

    @GetMapping("/hello")
    public String hello(){
        return feignClient.sayHello();
    }

    @GetMapping("/hi")
    public String hi(){
        return feignClient.sayHi();
    }


}

package com.example.ljcloudconsumer;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

@SpringBootApplication
@EnableEurekaClient //表明这是一个eureka客户端
@EnableFeignClients //开启feign
public class LjCloudConsumerApplication {

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

        System.out.println("---ljcloudconsumer 服务监控访问地址"+"http://localhost:8002");
    }

}

 右键启动。访问：http://localhost:8002/hi

后来想测试zuul网关和hystrix熔断器，但是导包一直报错，就没再继续了