Dubbo和Spring集成Demo

Zookeeper安装和启动

  • http://mirrors.hust.edu.cn/apache/zookeeper/下载,我的版本是 3.4.5。

  • 解压到 D:\zookeeper-3.4.5

  • 配置

    到目录conf 下创建 zoo.cfg 文件,默认就是加载这个文件,文件内容 我直接copy 的sample里面的

    zoo.cfg 的内容
    # 心跳检查的时间 2秒
    tickTime=2000
    # 初始化时 连接到服务器端的间隔次数,总时间10*2=20秒
    initLimit=10
    # ZK Leader 和follower 之间通讯的次数,总时间5*2=10秒
    syncLimit=5
    # 存储内存中数据库快照的位置,如果不设置参数,更新事务日志将被存储到默认位置。
    dataDir=D:\zk\tmp\zookeeper
    # 错误日志的存放位置
    dataLogDir=D:\zk\logs\zookeeper
    # ZK 服务器端的监听端口
    clientPort=2181

  • 运行

    然后 cd 到bin 目录下 执行zkServer.cmd 就启动成功了。利用jps命令行命令可以验证zookeeper是否启动成功。

Dubbo服务注册

建立WEB项目,引入相应Jar文件。

Dubbo和Spring集成Demo_第1张图片

配置web.xml文件

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">
    <display-name>dubbo-servicedisplay-name>
    <welcome-file-list>
        <welcome-file>index.htmlwelcome-file>
        <welcome-file>index.htmwelcome-file>
        <welcome-file>index.jspwelcome-file>
        <welcome-file>default.htmlwelcome-file>
        <welcome-file>default.htmwelcome-file>
        <welcome-file>default.jspwelcome-file>
    welcome-file-list>
    <context-param>
        <param-name>contextConfigLocationparam-name>
        <param-value>
            WEB-INF/dubbo-provider.xml
        param-value>
    context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
    listener>

    <filter>
        <filter-name>characterEncodingFilterfilter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>UTF-8param-value>
        init-param>
        <init-param>
            <param-name>forceEncodingparam-name>
            <param-value>trueparam-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>characterEncodingFilterfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>
web-app>
写服务类:
接口:
public interface IDemoService {

    /**
     * 
     * 
     * @Function: com.test.dubbo.service.IDemoService.sayHello
     * @Description:
     *
     * @param name
     * @return name string
     *
     * @version:v1.0
     * @author:cjq
     * @date:2015-4-30 下午5:45:30
     *
     * Modification History:
     * Date         Author      Version     Description
     * -----------------------------------------------------------------
     * 2015-4-30    cjq      v1.0.0         create
     */
    public String sayHello(String name);
}
实现:
public class DemoServiceImpl implements IDemoService {

    /*
     * (non-Javadoc)
     * 
     * @see com.test.dubbo.service.IDemoService#sayHello(java.lang.String)
     */
    public String sayHello(String name) {
        return "Hello Dubbo,Hello " + name;
    }

}
注册服务:
新建dubbo-provider.xml文件,文件内容为:

<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="dubbo-service" />

    
    

    
    <dubbo:registry address="zookeeper://xxxx:2181" />

    
    <dubbo:protocol name="dubbo" port="20880" />

    
    <dubbo:service interface="com.test.dubbo.service.IDemoService"
        ref="demoService" />

    
    <bean id="demoService" class="com.test.dubbo.service.impl.DemoServiceImpl" />
beans>  
部署启动服务:

Dubbo和Spring集成Demo_第2张图片

Dubbo服务调用

新建WEB或者普通JAVA工程,引入Dubbo服务注册项目中的jar文件。
需要导入一个服务接口(从上个程序中导入接口的jar并且导入到此项目中。)
配置web.xml文件(和上工程一样),编写调用配置文件dubbo-consumer.xml文件,内容如下:

<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="dubbo-service-consumer" />

    
    

    
    <dubbo:registry address="zookeeper://xxxx:2181" />

    
    <dubbo:reference id="demoService" interface="com.test.dubbo.service.IDemoService"/>

beans>  
编写测试代码:
/**
 * Copyright (C) 2015
 *
 *
 * @className:com.test.dubbo.consumer.ConsumerTest
 * @description:TODO
 * 
 * @version:v1.0.0 
 * @author:cjq
 * 
 * Modification History:
 * Date         Author      Version     Description
 * -----------------------------------------------------------------
 * 2015-4-30     cjq       v1.0.0        create
 *
 *
 */
package com.test.dubbo.consumer;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.test.dubbo.service.IDemoService;

public class ConsumerTest {
    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
                "file:D:/javaworkspace/dubbo-service-consumer/WebContent/WEB-INF/dubbo-consumer.xml");
        context.start();
        IDemoService demoService = (IDemoService) 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);
    }

}

Dubbo服务调用结果

调用测试代码,执行结果为:

Dubbo和Spring集成Demo_第3张图片

Dubbo介绍结尾

如果你在做分布式系统的话,不妨用一下这个技术。

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