dubbo入门

Dubbo架构：

服务注册中心使用zookeeper，部署在Linux（192.168.80.129）上。

Maven pom.xml文件：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.zzj</groupId>  <artifactId>dubble</artifactId>  <version>0.0.1</version>  <packaging>jar</packaging>  <name>dubble</name>  <url>http://maven.apache.org</url>  <properties>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  </properties>  <dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>3.8.1</version>      <scope>test</scope>    </dependency>        <dependency>    <groupId>com.alibaba</groupId>    <artifactId>dubbo</artifactId>    <version>2.5.5</version></dependency><dependency>    <groupId>com.101tec</groupId>    <artifactId>zkclient</artifactId>    <version>0.3</version></dependency>      </dependencies></project>

服务接口类：

package com.zzj.dubble.demo;public interface DemoService {String sayHello(String name);}

接口实现类：

package com.zzj.dubble.demo.provider;import com.zzj.dubble.demo.DemoService;public class DemoServiceImpl implements DemoService {public String sayHello(String name) {        return "Hello " + name;    }}

Dobbo提供者：

package com.zzj.dubble;import org.springframework.context.support.ClassPathXmlApplicationContext;/** * Hello world! * */public class Provider {public static void main(String[] args) throws Exception {        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(                new String[] {"classpath:dubbo-demo-provider.xml"});        context.start();        System.out.println("Dubbo provider started!");        System.in.read(); // press any key to exit        System.out.println("exit!");    }}

提供者配置文件：

<?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">        <dubbo:application name="demo-provider"/>    <dubbo:registry protocol="zookeeper" address="192.168.80.129:2181" />        <!-- 默认协议端口20880 -->    <!-- <dubbo:protocol name="dubbo" port="20880"/> -->        <dubbo:service interface="com.zzj.dubble.demo.DemoService" ref="demoService"/>        <bean id="demoService" class="com.zzj.dubble.demo.provider.DemoServiceImpl"/></beans>

Dubbo消费者：

package com.zzj.dubble;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.zzj.dubble.demo.DemoService;public class Consumer {public static void main(String[] args) throws Exception {        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(                new String[]{"classpath:dubbo-demo-consumer.xml"});        context.start();        DemoService demoService = (DemoService) context.getBean("demoService"); // obtain proxy object for remote invocation        String hello = demoService.sayHello("world"); // execute remote invocation        System.out.println(hello); // show the result        context.close();    }}

消费者配置文件：

<?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">        <dubbo:application name="demo-consumer"/>        <dubbo:registry protocol="zookeeper" address="192.168.80.129:2181" />        <dubbo:reference id="demoService" interface="com.zzj.dubble.demo.DemoService"/></beans>

启动提供者：

Dubbo provider started!

运行消费者：

Hello world