文章目录

  • 一、Eureka停止更新了你怎么办
  • 二、SpringCloud整合Zookeeper代替Eureka
  • 1.liunx环境中zookeeper的部署
  • 2.注册中心Zookeeper
  • 3.服务提供者
  • 4.服务消费者


一、Eureka停止更新了你怎么办

https://github.com/Netflix/eureka/wiki ps：官网提示不再更新zookeeper服务注册机制 zookeeper实现服务注册_zookeeper

二、SpringCloud整合Zookeeper代替Eureka

ps：zookeeper架构图：

zookeeper服务注册机制 zookeeper实现服务注册_zookeeper_02

1.liunx环境中zookeeper的部署

ps：zookeeper的启动依赖于java，所以安装zookeeper之前先安装java（此章节不详细介绍安装步骤，下面附上安装连接）

2.注册中心Zookeeper

前提条件：
1.在centos系统上安装成功zookeeper并启动成功
2.在本机win10和centos7都使用ping命令看是否可以ping通，ping不通关闭两端的防火墙试试，ping通后在可以做以下的注册操作。（zookeeper在centos7上，java程序在win10上）

1.zookeeper是一个分布式协调工具，可以实现注册中心功能。
2.关闭linux服务器防火墙后启动zookeeper服务器。
3.zookeeper服务器取代Eureka服务器，zk作为服务注册中心。

3.服务提供者

1.新建模块

新建cloud-provider-payment8004

2.改pom

<?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>mscloud03</artifactId>
        <groupId>com.atguigu.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-provider-payment8004</artifactId>


    <dependencies>
        <!-- SpringBoot整合Web组件 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency><!-- 引入自己定义的api通用包，可以使用Payment支付Entity -->
            <groupId>com.atguigu.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <!-- SpringBoot整合zookeeper客户端 -->
        <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>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

3.新建yml文件

#8004表示注册到zookeeper服务器的支付服务提供者端口号
server:
  port: 8004
#服务别名----注册zookeeper到注册中心名称
spring:
  application:
    name: cloud-provider-payment
  cloud:
    zookeeper:
      connect-string: 192.168.111.144:2181

4.主启动类

package com.atguigu.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

/**
 * @auther zzyy
 * @create 2020-01-30 16:54
 */
@SpringBootApplication
@EnableDiscoveryClient //该注解用于向使用consul或者zookeeper作为注册中心时注册服务
public class PaymentMain8004
{
    public static void main(String[] args)
    {
        SpringApplication.run(PaymentMain8004.class,args);
    }

}

5.controller

package com.atguigu.springcloud.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.beans.factory.annotation.Value;

import java.util.UUID;

/**
 * @auther zzyy
 * @create 2020-01-30 16:55
 */
@RestController
public class PaymentController
{
    @Value("${server.port}")
    private String serverPort;

    @RequestMapping(value = "/payment/zk")
    public String paymentzk()
    {
        return "springcloud with zookeeper: "+serverPort+"\t"+ UUID.randomUUID().toString();
    }
}

6.启动8004注册进zookeeper

1.启动后问题：

zookeeper服务注册机制 zookeeper实现服务注册_zookeeper_03


2.why


2.1zookeeper版本jar包冲突问题（项目进入版本与centos7中zookeeper版本不一样）


zookeeper服务注册机制 zookeeper实现服务注册_zookeeper服务注册机制_04


zookeeper服务注册机制 zookeeper实现服务注册_zookeeper_05


2.2解决方案：排出zk冲突后的新pom如下：

<?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>mscloud03</artifactId>
        <groupId>com.atguigu.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-provider-payment8004</artifactId>


    <dependencies>
        <!-- SpringBoot整合Web组件 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency><!-- 引入自己定义的api通用包，可以使用Payment支付Entity -->
            <groupId>com.atguigu.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <!-- SpringBoot整合zookeeper客户端 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
            <!--先排除自带的zookeeper3.5.3-->
            <exclusions>
                <exclusion>
                    <groupId>org.apache.zookeeper</groupId>
                    <artifactId>zookeeper</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!--添加zookeeper3.4.9版本-->
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.4.9</version>
        </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>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

7.验证测试：

http://localhost:8004/payment/zk

zookeeper服务注册机制 zookeeper实现服务注册_java_06


8.验证测试2

获得json串后用在线工具查看试试

zookeeper服务注册机制 zookeeper实现服务注册_java_07


9.思考

服务节点是临时节点还是持久节点？

zookeeper服务注册机制 zookeeper实现服务注册_spring_08


由上图可以看出服务停止，zookeeper就将服务移除，在下次重新注入节点，所以zookeeper服务节点是临时节点。

4.服务消费者

1.新建module

新建cloud-consumerzk-order80

2.改pom

<?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>mscloud</artifactId>
        <groupId>com.atguigu.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-consumerzk-order81</artifactId>


    <dependencies>
        <!-- SpringBoot整合Web组件 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- SpringBoot整合zookeeper客户端 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
            <!--先排除自带的zookeeper-->
            <exclusions>
                <exclusion>
                    <groupId>org.apache.zookeeper</groupId>
                    <artifactId>zookeeper</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!--添加zookeeper3.4.9版本-->
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.4.9</version>
        </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>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

3.添加yml文件

server:
  port: 80

spring:
  application:
    name: cloud-consumer-order
  cloud:
  #注册到zookeeper地址
    zookeeper:
      connect-string: 192.168.111.144:2181

4.主启动

package com.atguigu.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * @auther zzyy
 * @create 2020-01-30 17:32
 */
@SpringBootApplication
public class OrderZK80
{
    public static void main(String[] args)
    {
        SpringApplication.run(OrderZK80.class,args);
    }
}

5.业务类
5.1配置Bean

package com.atguigu.springcloud.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;

/**
 * @auther zzyy
 * @create 2020-01-30 17:33
 */
@Configuration
public class ApplicationContextBean
{
    @Bean
    @LoadBalanced
    public RestTemplate getRestTemplate()
    {
        return new RestTemplate();
    }
}

5.2controller

package com.atguigu.springcloud.controller;

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

/**
 * @auther zzyy
 * @create 2020-01-30 17:34
 */
@RestController
public class OrderZKController
{
    public static final String INVOKE_URL = "http://cloud-provider-payment";

    @Autowired
    private RestTemplate restTemplate;

    @RequestMapping(value = "/consumer/payment/zk")
    public String paymentInfo()
    {
        String result = restTemplate.getForObject(INVOKE_URL+"/payment/zk", String.class);
        System.out.println("消费者调用支付服务(zookeeper)--->result:" + result);
        return result;
    }

}

6.验证测试

zookeeper服务注册机制 zookeeper实现服务注册_zookeeper_09


7.访问测试地址

http://localhost/consumer/payment/zk 页面展示如下：

zookeeper服务注册机制 zookeeper实现服务注册_java_10