Dubbo入门学习--Dubbo简单示例

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1、Zookeeper安装

从Zookeeper官网下载，进入到bin目录下，在cms中执行zkServer就可以运行Zookeeper了。

2、API接口

创建一个接口jar，此接口在服务提供者和服务消费者中使用

public interface IDemoServer {String sayHello(String str);}

3、服务提供者

applicationContext.xml中添加如下配置：

<?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        ">     <!--应用名称--><dubbo:application name="hello-world-app" />  <!--配置Zookeeper连接地址-->    <dubbo:registry  protocol="zookeeper"  address="localhost:2181"  /><!--服务协议-->   <dubbo:protocol name="dubbo"/>   <!--接口--><dubbo:service interface="com.tianjunwei.server.dubbo.service.IDemoServer"ref="demoService" />       <!-- 和本地bean一样实现服务 --><!--实现类--><bean id="demoService" class="com.tianjunwei.server.dubbo.service.DemoServerImpl" /></beans>

接口IDemoServer的实现类

public class DemoServerImpl implements IDemoServer {public String sayHello(String str) {return str;}}

Main函数启动提供服务：

public class Main {public static void main(String[] args) {ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "applicationProvider.xml" });context.start();while(true){}}}

3、服务消费者

applicationContext.xml中如下配置：

<?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--><dubbo:application name="consumer-of-helloworld-app" />      <!-- Zookeeper连接信息 --> <dubbo:registry  protocol="zookeeper"  address="localhost:2181" />  <!-- 服务接口 -->       <dubbo:reference id="demoService" interface="com.tianjunwei.server.dubbo.service.IDemoServer"/></beans>

服务调用：

public class ChatAction {     @SuppressWarnings("resource")public static void main(String[] args) throws InterruptedException{ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "applicationContext.xml" });context.start();IDemoServer demoServer = (IDemoServer) context.getBean("demoService");System.out.println("client:"+demoServer.sayBye("dubbo"));    }}

运行结果：

client：dubbo

可以去官网https://github.com/alibaba/dubbo中参考示例程序。

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