Dubbo源码学习（一、环境搭建）

坚持一下，把源码看完，勤奋一点，不要在懒惰了，你已经落下别人很多了

环境配置:

jdk  1.7.0.17
dubbo 2.5.x
myeclipse 2014
idea 2017
参考博客:

https://blog.csdn.net/u012410733/article/category/7159846

http://shiyanjun.cn/archives/325.html

文档结构

环境搭建

pom.xml:

<dependency>
  <groupId>log4j</groupId>
  <artifactId>log4j</artifactId>
  <version>1.2.17</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
  <version>3.2.18.RELEASE</version>
</dependency>

<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>dubbo</artifactId>
  <version>2.5.9</version>
</dependency>
<!-- 连接zookeeper的客户端 -->
<dependency>
  <groupId>com.github.sgroschupf</groupId>
  <artifactId>zkclient</artifactId>
  <version>0.1</version>
</dependency>

provider.xml

<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-4.3.xsd
       http://code.alibabatech.com/schema/dubbo
       http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!-- 提供方应用信息，用于计算依赖关系 -->
    <dubbo:application name="hello-world-app"  />

    <!-- 使用multicast广播注册中心暴露服务地址 -->
    <dubbo:registry address="multicast://224.5.6.7:1234" />

    <!-- 用dubbo协议在20880端口暴露服务 -->
    <dubbo:protocol name="dubbo" port="20880" />

    <!-- 声明需要暴露的服务接口 -->
    <dubbo:service interface="dubbo.common.DemoService" ref="demoService" />

    <!-- 和本地bean一样实现服务 -->
    <bean id="demoService" class="dubbo.provider.DemoServiceImpl" />
</beans>

consumer.xml

<?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-4.3.xsd
       http://code.alibabatech.com/schema/dubbo
       http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!-- 消费方应用名，用于计算依赖关系，不是匹配条件，不要与提供方一样 -->
    <dubbo:application name="consumer-of-helloworld-app"  />

    <!-- 使用multicast广播注册中心暴露发现服务地址 -->
    <dubbo:registry address="multicast://224.5.6.7:1234" />

    <!-- 生成远程服务代理，可以和本地bean一样使用demoService -->
    <dubbo:reference id="demoService" interface="dubbo.common.DemoService" check="false" retries="2" loadbalance="roundrobin"/>
</beans>

接口 DemoService

public interface DemoService {
    String sayHello(String name);
}

实现类 DemoServiceImpl:

import dubbo.common.DemoService;

/**
 * @description:
 * @author:zxl
 * @createTime:2018/6/13 19:19
 */
public class DemoServiceImpl implements DemoService {
    @Override
    public String sayHello(String name) {
        System.out.println("Provider received,param[name]="+name);
        return "Hello "+name;
    }
}

 客户端 consumer:

public class Consumer {
    public static void main(String[] args) throws Exception {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("consumer.xml");
        context.start();
        DemoService demoService = (DemoService)context.getBean("demoService"); // 获取远程服务代理
        String hello = demoService.sayHello("world"); // 执行远程方法
        System.out.println( hello ); // 显示调用结果
    }
}

服务端 provider；

public class Provider {
    public static void main(String[] args)throws Exception{
        ClassPathXmlApplicationContext ctx=new ClassPathXmlApplicationContext("provider.xml");

        ctx.start();
        System.in.read();
        //test();
    }

启动Provider 、consumer，简单的环境搭建完毕