Dubbo引见1- Hello World例子

Dubbo介绍1- Hello World例子
介绍

dubbo是阿里巴巴的开源RPC框架。阿里巴巴Dubbo实现的源码分析?这篇文章介绍的挺好的。对应的主页是?http://code.alibabatech.com/wiki/display/dubbo/Home? 。看dubbo主要是想学习一下对应的ClassLoader的隔离机制。不过所有技术都总HelloWorld开始，那就mark一下吧。

?

我是通过zk做服务集群管理的。所以如果要跑下面这个程序，需要自己搭一个zk集群?

对应的接口

?

package demo.service;/** * User: zhenghui * Date: 14-1-13 * Time: 上午10:40 */public interface DemoService {    public void sayHello();}

?实现类

package demo.service;/** * User: zhenghui * Date: 14-1-13 * Time: 上午10:41 */public class DemoServiceImpl implements DemoService {    @Override    public void sayHello() {        System.out.println("hello 00!");    }}

?

provider.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.xsd        http://code.alibabatech.com/schema/dubbo        http://code.alibabatech.com/schema/dubbo/dubbo.xsd        ">    <dubbo:application name="hello-world-app" />    <dubbo:registry  protocol="zookeeper" address="10.125.195.174:2181" />    <dubbo:protocol name="dubbo" port="20880" />    <dubbo:service interface="demo.service.DemoService"                   ref="demoService" />       <!-- 和本地bean一样实现服务 -->    <bean id="demoService" /></beans>

?

import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;/** * User: zhenghui * Date: 14-1-13 * Time: 下午1:54 */public class DubboProviderDemo {    public static void main(String[] args) throws InterruptedException {        new ClassPathXmlApplicationContext(                new String[] {"demo/provider.xml"});        while (true){}    }}

?

comsumer?

<?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        ">    <!-- 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  protocol="zookeeper" address="10.125.195.174:2181" />         <!-- 生成远程服务代理，可以和本地bean一样使用demoService -->    <dubbo:reference id="demoService" interface="demo.service.DemoService" /></beans>

?

import demo.service.DemoService;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;/** * User: zhenghui * Date: 14-1-13 * Time: 下午1:54 */public class DubboComsumeDemo {    public static void main(String[] args) throws InterruptedException {        ApplicationContext factory = new ClassPathXmlApplicationContext(                new String[] {"demo/comsumer.xml"});        DemoService demoService = (DemoService) factory.getBean("demoService");        demoService.sayHello();    }}

?

先运行?DubboProviderDemo 然后再运行DubboComsumeDemo ，然后就可以看到在DubboProviderDemo的console中打印 “hello 00!”

?

后面我会继续介绍dubbo，计划下一篇内容是它是如何启动provider的。