1.新增一个父项目，并在父项目中添加依赖

    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>dubbo</artifactId>
        <version>2.5.8</version>
    </dependency>
    <dependency>
        <groupId>org.apache.zookeeper</groupId>
        <artifactId>zookeeper</artifactId>
        <version>3.4.6</version>
    </dependency>
    <dependency>
        <groupId>com.101tec</groupId>
        <artifactId>zkclient</artifactId>
        <version>0.7</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
    </dependency>

2.在当前父项目中添加子模块DubboInferface, 并新增一个IHelloInterface的接口

package com.qfedu.dubbo;

public interface IHelloInterface {

    String sayHello(String name);
}

3.在当前父项目中再添加子模块DubboProvider

(1)在当前子模块的pom文件中添加DubboInterface接口模块的依赖

<dependency>
    <groupId>com.qfedu</groupId>
    <artifactId>DubboInterface</artifactId>
    <version>1.0-SNAPSHOT</version>
</dependency>

(2)新增接口子模块中接口的实现类

package com.qfedu.dubbo;

public class HelloClass implements IHelloInterface {

    @Override
    public String sayHello(String name) {
        return "hello " + name;
    }
}

(3)在当前子模块的resources下新增spring-dubbo的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!--
        使用bean来创建一个HelloClass的实例对象
    -->
    <bean id="myDubbo" class="com.qfedu.dubbo.HelloClass" />

    <!--
        定义一个dubbo的应用程序的名称，将来会在dubbo的管理中心查看
    -->
    <dubbo:application name="DubboProvider" />

    <!--
        配置dubbo协议，dubbo，hession， RMI
    -->
    <dubbo:protocol name="dubbo" port="20880" />

    <!--
        将当前应用注册到zookeeper注册中心服务器之上
    -->
    <dubbo:registry address="zookeeper://ip:2181"></dubbo:registry>

    <!--
        将当前服务的接口暴露出去，以供消费方来消费
    -->
    <dubbo:service interface="com.qfedu.dubbo.IHelloInterface" ref="myDubbo" />
</beans>

(4)在当前子模块中新增一个测试类将当前的spring-dubbo配置文件加载起来

package com.qfedu.dubbo;

import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestProvider {

    @Test
    public void testProvider(){
        //  加载spring-dubbo的配置文件
        new ClassPathXmlApplicationContext("classpath:spring-dubbo.xml");

        //  提示信息
        System.out.println("provider is ready");

        //  死循环保证"长连接"
        while (true){}
    }
}

4.新增子模块DubboConsumer

(1)在当前子模块中resources下新增spring-dubbo的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!--
        配置当前应用的名称，给监控中心来使用
    -->
    <dubbo:application name="DubboConsumer" />

    <!--
        设置注册中心，从该注册中心去消费服务
    -->
    <dubbo:registry address="zookeeper://ip:2181" />

    <!--
        获取服务提供方所提供的接口数据
    -->
    <dubbo:reference interface="com.qfedu.dubbo.IHelloInterface" id="myDubbo" />
</beans>

(2)在当前子模块中新增测试类加载spring-dubbo的配置信息，并测试数据是否获取

package com.qfedu.dubbo;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestConsumer {

    IHelloInterface hello;

    @Test
    public void testConsumer(){
        //  　加载spring-dubbo的配置文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:spring-dubbo.xml");

        //  通过id拿到spring-dubbo中定义的myDubbo节点对应的对象
        hello = ac.getBean("myDubbo", IHelloInterface.class);

        //  调用mydubbo对象中的方法，完成测试
        String content = hello.sayHello("zhangsan");

        //  打印测试结果
        System.out.println(content);

        //while (true){}
    }
}

5.启动zookeeper之后，运行provide测试类进行测试

log4j:WARN No appenders could be found for logger (org.springframework.core.env.StandardEnvironment).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
provider is ready

6.运行consumer的测试类

com.qfedu.dubbo.TestConsumer,testConsumer
log4j:WARN No appenders could be found for logger (org.springframework.core.env.StandardEnvironment).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
hello zhangsan

7.至此dubbo的简单的配置完成