前言
编写本篇博客主要是自己在项目开发中,没有使用到Zookeeper,想通过Demo的练习,查看其怎么进行服务发现与注册的。我们知道zookeeper是一个分布式协调工具,可以实现注册中心功能,下面会通过实例进行讲解我们的zookerper具体的功能:
创建module
修改pom文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>com.zcw.springcloud2020508</artifactId>
<groupId>com.zcw</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-provider-payment-zcw-zk-8004</artifactId>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.zcw</groupId>
<artifactId>cloud-api-commons</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
</dependencies>
</project>
修改yml文件
server:
port: 8004
# 服务别名,注册到zookeeper 到注册中心
spring:
application:
name: cloud-provider-payment
cloud:
zookeeper:
connect-string: 192.168.21.128:2181
修改启动类
package com.zcw.springcloud;
import com.zcw.springcloud.entities.Payment;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
/**
* @ClassName : PaymentApplication8004
* @Description :
* @Author : Zhaocunwei
* @Date: 2020-05-13 17:43
*/
@SpringBootApplication
@EnableDiscoveryClient
public class PaymentApplication8004 {
public static void main(String[] args) {
SpringApplication.run(PaymentApplication8004.class,args);
}
}
针对上面的注解EnableDiscoveryClient,用于向使用consul或zookeeper作为注册中心时注册服务
controller
package com.zcw.springcloud.controller;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.UUID;
/**
* @ClassName : PaymenController
* @Description :
* @Author : Zhaocunwei
* @Date: 2020-05-13 17:53
*/
@RestController
@Slf4j
public class PaymenController {
@Value("${server.port}")
private String serverPort;
@RequestMapping(value = "/payment/zk")
public String paymentzk(){
return "springcloud with zookeeper:"+serverPort+ UUID.randomUUID().toString();
}
}
测试
- 启动服务