Dubbo[一个分布式服务框架

package com.alibaba.dubbo.demo;

public interface DemoService {

    String sayHello(String name);

}

package com.alibaba.dubbo.demo.provider;

import com.alibaba.dubbo.demo.DemoService;

public class DemoServiceImpl implements DemoService {

    public String sayHello(String name) {

        return "Hello " + name;

    }

}

<?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">

    <!-- 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="com.alibaba.dubbo.demo.DemoService" ref="demoService" />

    <!-- 和本地bean一样实现服务 -->

    <bean id="demoService" class="com.alibaba.dubbo.demo.provider.DemoServiceImpl" />

</beans>

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Provider {

    public static void main(String[] args) throws Exception {

        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] {"http://10.20.160.198/wiki/display/dubbo/provider.xml"});

        context.start();

        System.in.read(); // 按任意键退出

    }

}

<?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 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="com.alibaba.dubbo.demo.DemoService" />

</beans>

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.alibaba.dubbo.demo.DemoService;

public class Consumer {

    public static void main(String[] args) throws Exception {

        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] {"http://10.20.160.198/wiki/display/dubbo/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

    }

}