结合Dubbo官网学习如何完成SpringBoot+Dubbo+Zookeeper集成的学习，本次采用环境如下：

• 开发工具：IntelliJ IDEA Community Edition 2023.2.5 （IDEA社区版 2023.2.5）
• 开发环境：JDK 1.8，Windows 11
• Dubbo 3.2.0-beta.4，SpringBoot 2.7.8， Zookeeper 3.8.4
• 辅助程序：dubbo-admin-develop

Zookeeper

Zookeeper 下载

下载地址：https://zookeeper.apache.org/releases.html#news

下载解压完毕后找到apache-zookeeper-3.8.4-bin/bin目录启动zkServer.cmd和zkcli.cmd文件，测试是否能够联通

出现以下效果说明zookeeper测试成功

可能出现的问题

启动zkServer.cmd时出现闪退
排除方法：使用文本编辑器打开zkServer.cmd文件，在末尾添加pause，解除闪退查看原因

截断之后发现原因时在conf文件夹下缺少zoo.cfg文件，那么复制zoo_sample.cfg文件修改成zoo.cfg即可，当然也可以自己编辑cfg的内容

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/tmp/zookeeper
clientPort=2181
admin.serverPort=8888

辅助程序

dubbo-admin-develop 主要是进入到dubbo-admin页面，可以查看服务提供者提供了什么服务，启动后页面如下：

下载dubbo-admin

下载地址：https://gitee.com/apache-dubbo/dubbo-admin

dubbo-admin环境：Node.js v16.3.0，npm 7.15.1，Maven 3.8.8，JDK 1.8，Zookeeper 3.8.4

项目打包

首先需要完成前端工程，打开项目，进入dubbo-admin-ui文件，进入命令行模式(cmd)，执行npm install 下载前端node_modules，完毕后再次运行命令npm run dev

完成前端工作后，回到dubbo-admin-develop文件夹，进入命令行模式(cmd)，执行mvn package -Dmaven.test.skip=true ，打包整体项目，完成之后进入到

工程打包

常见问题

常见问题见：https://blog.csdn.net/qq_43780610/article/details/136622497?spm=1001.2014.3001.5501

SpringBoot集成Dubbo

由于本人使用的社区版，所以搭建Springboot的方式是创建Maven项目，然后通过Maven配置SpringBoot依赖，觉得麻烦的可以自己去SpringBoot官网下载或者使用非社区版。

项目依赖

<?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"><modelVersion>4.0.0</modelVersion><groupId>org.example</groupId><artifactId>Dubbo-demo</artifactId><version>1.0-SNAPSHOT</version><packaging>pom</packaging><modules><module>gmall-interface</module><module>dubbo-service-consumer</module><module>dubbo-service-provider</module></modules><properties><dubbo.version>3.2.0-beta.4</dubbo.version><spring-boot.version>2.7.8</spring-boot.version><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencyManagement><!--   引入公共api --><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-dependencies</artifactId><version>${spring-boot.version}</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-bom</artifactId><version>${dubbo.version}</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-dependencies-zookeeper-curator5</artifactId><version>3.2.0-beta.4</version><type>pom</type></dependency></dependencies></dependencyManagement><build><pluginManagement><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>${spring-boot.version}</version></plugin></plugins></pluginManagement></build></project>

定义服务接口

服务接口 Dubbo 中沟通消费端和服务端的桥梁。

在gmall-interface模块的com.chen.gmall.serviceImpl创建接口类DemoService

package com.chen.gmall.service;public interface DemoService {String sayHello(String name);
}

服务端实现

服务端配置依赖

pom.xml

<?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"><modelVersion>4.0.0</modelVersion><parent><groupId>org.example</groupId><artifactId>Dubbo-demo</artifactId><version>1.0-SNAPSHOT</version></parent><artifactId>dubbo-service-provider</artifactId><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><!-- dubbo --><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-dependencies-zookeeper-curator5</artifactId><type>pom</type><exclusions><exclusion><artifactId>slf4j-reload4j</artifactId><groupId>org.slf4j</groupId></exclusion></exclusions></dependency><!-- spring boot starter --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.example</groupId><artifactId>gmall-interface</artifactId><version>1.0-SNAPSHOT</version><scope>compile</scope></dependency></dependencies>
</project>

application.properties

server.port=8080
# 在注册中心的服务名
dubbo.application.name=dubbo-springboot-service-providerdubbo.protocol.name=dubbo
dubbo.protocol.port=-1
# 注册中心地址
dubbo.registry.address=zookeeper://${zookeeper.address:127.0.0

代码实现

在dubbo-service-provider模块的com.chen.gmall.serviceImpl实现DemoServiceImpl类，类上使用@DubboService注解，表示此类中的方法注册到注册中心中，消费者可以通过相同注解调用此类服务
注意：该实现类实现的接口是的gmall-interface的接口类，要想能够引入需要在pom.xml中引入依赖
DemoServiceImpl.java

package com.chen.gmall.serviceImpl;import com.chen.gmall.service.DemoService;
import org.apache.dubbo.config.annotation.DubboService;//注：在DemoServiceImpl 类中添加了 @DubboService 注解，通过这个配置可以基于 Spring Boot 去发布 Dubbo 服务
@DubboService
public class DemoServiceImpl implements DemoService {@Overridepublic String sayHello(String name) {return "hello, " + name;}
}

启动类 ProviderApplication

package com.chen.gmall;import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication
@EnableDubbo
public class ProviderApplication {public static void main(String[] args) {SpringApplication.run(ProviderApplication.class, args);}
}

消费端实现

服务端配置依赖

pom.xml

<?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"><modelVersion>4.0.0</modelVersion><parent><groupId>org.example</groupId><artifactId>Dubbo-demo</artifactId><version>1.0-SNAPSHOT</version></parent><artifactId>dubbo-service-consumer</artifactId><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-dependencies-zookeeper-curator5</artifactId><type>pom</type><exclusions><exclusion><groupId>org.slf4j</groupId><artifactId>slf4j-reload4j</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.example</groupId><artifactId>gmall-interface</artifactId><version>1.0-SNAPSHOT</version></dependency></dependencies></project>

application.properties

server.port=8081
# 在注册中心的服务名
dubbo.application.name=dubbo-springboot-service-consumer
dubbo.protocol.name=dubbo
dubbo.protocol.port=-1# 注册中心地址
dubbo.registry.address=zookeeper://${zookeeper.address:127.0.0.1}:2181

代码实现

在dubbo-service-consumer模块的com.chen.gmall.serviceImpl实现Task 类，使用@DubboReference注入服务提供方提供的实现类，消费者可以使用这个类调用服务方该类下的所有方法

package com.chen.gmall.serviceImpl;import com.chen.gmall.service.DemoService;
import com.chen.gmall.service.consumerTask;
import org.apache.dubbo.config.annotation.DubboReference;
import org.apache.dubbo.config.annotation.DubboService;
import org.springframework.stereotype.Component;@Component
public class Task implements consumerTask {@DubboReferenceDemoService demoService;public void Task(){String result = demoService.sayHello("Dubbo!");System.out.println("result =======> " + result);new Thread(() -> {while (true){try{Thread.sleep(1000);System.out.println("Thread Result ======> " + result);}catch (Exception e){e.printStackTrace();Thread.currentThread().interrupt();}}}).start();}
}

启动类 ConsumerApplication

package com.chen.gmall;import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication
@EnableDubbo
public class ConsumerApplication {public static void main(String[] args){SpringApplication.run(ConsumerApplication.class, args);}
}

Controller
创建Controller的目的为了测试用，看看是否能够调通服务类方法

package com.chen.gmall.Controller;import com.chen.gmall.serviceImpl.Task;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
public class ConsumerController {@AutowiredTask task;@GetMapping("/demoTest")public void demoTest() {System.out.println(" ==========================Starting demo=========================");task.Task();}
}

接口类 consumerTask

package com.chen.gmall.service;import org.springframework.stereotype.Service;@Service
public interface consumerTask {public void Task();
}

启动

首先，需要启动Zookeeper，在启动服务端和消费端代码，随后启动dubbo-admin，查看是否存在dubbo-service-provider的服务，如果有说明成功了，然后调用localhost:8081/demoTest，查看是否输出结果