场景

SpringCloud中集成Eureka实现服务注册(单机Eureka构建)：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/124688609

SpringCloud中集成Eureka实现集群部署服务注册与服务提供者：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/124710576

SpringCloud中集成Eureka时通过Discovery实现服务发现：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/124725905

上面通过Eureka进行服务注册与发现的基础上，如果要将服务注册中心更改为Zookeeper要怎么实现。

注：

博客：
https://blog.csdn.net/badao_liumang_qizhi
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实现

1、Zookeeper搭建

Docker中Zookeeper、Kafka的安装与发送和消费消息：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/124308163

这里是通过docker快速搭建，如果需要其他安装方式自行研究。

搭建成功之后开放服务器上的zookeeper默认的2181端口。

2、服务提供者集成Zookeeper

参考上面新建Eureka客户端的过程，在父模块下新建cloud-provider-payment8004模块

修改pom文件，引入zookeeper所需的依赖

        <!-- SpringBoot整合zookeeper客户端 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
        </dependency>

其他根据业务引入所需依赖，完整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>SpringCloudDemo</artifactId>
        <groupId>com.badao</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

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

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency><!-- 引入自己定义的api通用包，可以使用Payment支付Entity -->
            <groupId>com.badao</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <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>
        </dependency>
    </dependencies>
</project>

新建并修改application.yml

#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: 自己的zookeeper的ip:2181

将这里的ip改为自己的zookeeper的地址

新建主启动类PaymentMain8004,并在启动类上添加@EnableDiscoveryClient注解

package com.badao.springclouddemo;

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

@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);
    }
}

新建controller,并开放接口返回一个UUID

package com.badao.springclouddemo.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;

@RestController
@Slf4j
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();
    }
}

8004服务提供者完整项目结构

3、启动8004项目，来到zookeeper上

交互式进入容器

docker exec -it 078de5ab4afd /bin/bash

这里的078..是zookeeper的容器id

进入到bin目录下，启动客户端

./zkCli.sh

ls列出所有节点，然后进入/services下查看到cloud-provider-payment已经注册成功

此时可以查看节点的详细信息

get /services/cloud-provider-payment/57f06ede-9795-4703-84b0-44295dd69c39

其中后面的编号是节点的流水号

此时在浏览器中访问服务提供者的接口

http://127.0.0.1:8004/payment/zk

则服务提供者注册进Zookeeper成功

4、服务消费者注册进Zookeeper

参考上面新建Eureka的服务消费者，再新建子模块cloud-consumerzk-order88

修改其pom文件同样加入

        <!-- SpringBoot整合zookeeper客户端 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
        </dependency>

完整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>SpringCloudDemo</artifactId>
        <groupId>com.badao</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-consumerzk-order88</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency><!-- 引入自己定义的api通用包，可以使用Payment支付Entity -->
            <groupId>com.badao</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <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>
        </dependency>
    </dependencies>

</project>

新建并修改application.yml

server:
  port: 88


#服务别名----注册zookeeper到注册中心名称
spring:
  application:
    name: cloud-consumer-order
  cloud:
    zookeeper:
      connect-string: 自己的zookeeper的ip:2181

新建主启动类并添加注解@EnableDiscoveryClient

package com.badao.springclouddemo;

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


@SpringBootApplication
@EnableDiscoveryClient
public class OrderZKMain88
{
    public static void main(String[] args) {
            SpringApplication.run(OrderZKMain88.class, args);
    }
}

为了实现服务调用，添加RestTemplate的配置文件

package com.badao.springclouddemo.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 ApplicationContextConfig
{
    @Bean
    @LoadBalanced
    public RestTemplate getRestTemplate()
    {
        return new RestTemplate();
    }
}

新建Controller

package com.badao.springclouddemo.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

@RestController
@Slf4j
public class OrderZKController {
    public static final String INVOKE_URL = "http://cloud-provider-payment";

    @Resource
    private RestTemplate restTemplate;

    @GetMapping(value = "/consumer/payment/zk")
    public String paymentInfo()
    {
        String result = restTemplate.getForObject(INVOKE_URL+"/payment/zk",String.class);
        return result;
    }
}

其中这里的URL就是上面服务提供者的别名

完整88服务消费者目录

启动88服务消费者

来到zookeeper上查看services上，注册成功

ls /services

然后浏览器中访问88的接口进行服务调用

http://127.0.0.1:88/consumer/payment/zk

posted on 2022-05-13 11:17 霸道流氓阅读(223) 评论(0) 收藏举报

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