Zookeeper当作注册中心配置

开启Zookeeper服务

zk搭建见此

创建生产者&消费者

最基础的SpringBoot项目,提供一个方法即可,为方便测试负载均衡,创建两个生产者

//生产者项目1
@RestController
public class ProducerController {
    @GetMapping("/producer/getMethod")
    public String getMethod(String val){
        return val+"7777";
    }
}
//生产者项目2
@RestController
public class ProducerController {
    @GetMapping("/producer/getMethod")
    public String getMethod(String val){
        return val+"8888";
    }
}

项目结构如下:

image-20230215181450595

修改POM

生产者和消费者项目添加GAV坐标

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
            <version>2.2.5.RELEASE</version>
        </dependency>

修改Yml

#生产者7777 & 生产者8888
spring:
  application:
    name: my-producer #注册到zk的消费者名称
  cloud:
    zookeeper:
      connect-string: 10.20.30.227:2181


#消费者6655
server:
  port: 6655
spring:
  application:
    name: my-customer #注册到zk的消费者名称
  cloud:
    zookeeper:
      connect-string: 10.20.30.227:2181

修改启动类

两个生产者项目

//添加注解 @EnableDiscoveryClient
@SpringBootApplication
@EnableDiscoveryClient
public class ProducerApplication {
    public static void main(String[] args) {
        SpringApplication.run(ProducerApplication.class,args);
    }
}

证明生产者服务是否成功注册

进入zk中,命令查询,可看到两个服务

image-20230216175124581

修改消费者项目

添加配置类

package com.rb.config;

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

@Configuration
public class ApplicationContextBean
{
    @Bean
    @LoadBalanced //开启负载均衡
    public RestTemplate getRestTemplate()
    {
        return new RestTemplate();
    }
}

添加消费者请求方法

package com.rb.controller;

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

@RestController
public class CustomerController {
    public static final String URL = "http://my-producer";
    @Autowired
    private RestTemplate restTemplate;
    @GetMapping("/customer/getMethod")
    public String getMethod(String val){
        String result = restTemplate.getForObject(URL+"/producer/getMethod?val="+val, String.class);
        return result;
    }
}

验证消费端请求服务端

启动消费者后请求:

http://127.0.0.1:6655/customer/getMethod?val=customer

会发现会轮询输出7777和8888

链接集群ZK

集群搭建见此处

三个项目Yml配置修改

server:
  port: 8888
spring:
  application:
    name: my-producer #注册到zk的消费者名称
  cloud:
    zookeeper:
      connect-string: 10.20.30.227:2181,10.20.30.227:2182,10.20.30.227:2183
      #connect-string host1:port1,host2:port2,host3:port3
posted @ 2023-02-17 15:21  RollBack2010  阅读(23)  评论(0编辑  收藏  举报