使用springcloud来整合zookeeper入门篇

1.这里我以windows版本的zookeeper为案例进行整合

2.启动zookeeper

D:\zookpeer\zookeeper-3.3.6\bin    zkserver.cmd

D:\zookpeer\ZooInspector\build   双击zookeeper-dev-ZooInspector.jar，这个时候如下图所示点击启动

以上是我本地存储的位置，zookeeper客户端服务端下载地址：

 

3.我们这里订单服务调用会员服务，首先搭建会员服务member,

首先创建一个maven项目，把下面依赖粘贴进去

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.1.RELEASE</version>
	</parent>
	<!-- 管理依赖 -->
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>Finchley.M7</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>
	<dependencies>
		<!-- SpringBoot整合Web组件 -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<!-- SpringBoot整合eureka客户端 -->
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
		</dependency>

	</dependencies>
	<!-- 注意： 这里必须要添加， 否者各种依赖有问题 -->
	<repositories>
		<repository>
			<id>spring-milestones</id>
			<name>Spring Milestones</name>
			<url>https://repo.spring.io/libs-milestone</url>
			<snapshots>
				<enabled>false</enabled>
			</snapshots>
		</repository>
	</repositories>

4.新建一个application.yml文件，把下面配置文件粘贴进去

###订单服务的端口号
server:
  port: 8002
###服务别名----服务注册到注册中心名称 
spring:
  application:
    name: zk-member
  cloud:
    zookeeper:
      connect-string: 127.0.0.1:2181

5.新建一个app启动类，代码如下：

package zk_member;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.RestController;
@RestController
@SpringBootApplication
@EnableDiscoveryClient
public class App {
	@Value("${server.port}")
	private String serverPort;
    @RequestMapping("/getMember")
	public String getMember() {
		return "订单服务调用会员服务，端口："+serverPort;
	}
	
public static void main(String[] args) {
	SpringApplication.run(App.class, args);
}

}

注意：当使用Eureka作为注册中心时我们使用的注解是@EnableEurekaClient,这里使用zookeeper作为注册中心要使用注解：@EnableDiscoveryClient

EnableDiscoveryClient作用是如果注册中心使用consul、zookeeper就使用注解@EnableDiscoveryClient向注册中心注册服务

6.然后搭建order服务

首先将上面member的依赖copy过来，然后新建application.yml,将下面配置文件粘贴过来

###订单服务的端口号
server:
  port: 8003
###服务别名----服务注册到注册中心名称 
spring:
  application:
    name: zk-order
  cloud:
    zookeeper:
      connect-string: 127.0.0.1:2181

7.然后新建启动类app

package zk_order;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;

import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication
@EnableDiscoveryClient
public class App {
	 @Autowired
	 private RestTemplate restTemplate;
	 @RequestMapping("/order")
	 public String getList(){
		 String memberUrl="http://zk-member/getMember";
		 return restTemplate.getForObject(memberUrl, String.class);
	 }
	
	 public static void main(String[] args) {
	      SpringApplication.run(App.class, args);
	}
	 @Bean
	 @LoadBalanced
	public RestTemplate restTemplate() {
		return new RestTemplate();
	}
}

然后分别启动member和order

此时通过order访问member成功就代表zookeeper整合成功