所需环境

zookeeper作为dubbo的注册中心,dubbo服务提供方和消费方都需要在zookeeper注册中心注册。
可参考:http://blog.csdn.net/jingyangv587/article/details/78901508
注意:启动后,请勿关闭!

开始搭建

###1. 服务提供方和消费方都需要的包(这里我新建的maven工程为pom工程,将共同的项目依赖写到pom.xml中)

  • 总的项目结构为
    这里写图片描述

  • pom.xml文件内容为

<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.test</groupId>
  <artifactId>dubbo-demo</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  
   <properties>
        <motan.version>0.3.0</motan.version>
        <!-- 在阿里巴巴内部广泛使用的GA版本为:2.4.9,强烈推荐此版本 -->
        <dubbo.version>2.5.3</dubbo.version>
        <dubbox.version>2.8.4</dubbox.version>
        <spring.version>4.3.6.RELEASE</spring.version>
        <java.version>1.7</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    
    <dependencies>
      <dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>dubbo</artifactId>
			<version>2.5.3</version>
			<exclusions>
				<exclusion>
					<groupId>org.springframework</groupId>
					<artifactId>spring</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>com.github.sgroschupf</groupId>
			<artifactId>zkclient</artifactId>
			<version>0.1</version>
		</dependency>
		<!-- spring相关 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-orm</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jms</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjrt</artifactId>
			<version>1.6.11</version>
		</dependency>
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjweaver</artifactId>
			<version>1.6.11</version>
		</dependency>
    </dependencies>
   <modules>
   	<module>demo-api</module>
   	<module>dubbo-consumer</module>
   	<module>dubbo-provider</module>
   </modules>
</project>

2. 在demo-api中定义服务接口(注意服务提供方和消费方都需要依赖这个项目)

package com.test;

public interface DemoService{  
     String sayHello(String name);  
} 

3. 服务提供方实现

  • 项目结构
    这里写图片描述
  • 实现接口
package com.test;
import org.springframework.stereotype.Service;

import com.test.DemoService;
@Service("demoService")
public class DemoServiceImpl implements DemoService{

	@Override
	public String sayHello(String name) {
		// TODO Auto-generated method stub
		return name; 
	}  
}

  • 声明暴露服务:
<?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="dubbo_provider"  />  
   
    <!-- 使用zookeeper注册中心暴露服务地址 -->  
    <dubbo:registry address="zookeeper://127.0.0.1:2181" />   
    
    <!-- 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.test.DemoService" ref="demoService" />  
</beans>
  • 在springmvc.xml中扫描service注解并将dubbo-provider.xml中的相关的dubbo配置引入进来
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:util="http://www.springframework.org/schema/util" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/aop   
        http://www.springframework.org/schema/aop/spring-aop-4.0.xsd   
        http://www.springframework.org/schema/beans   
        http://www.springframework.org/schema/beans/spring-beans-4.0.xsd   
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-4.0.xsd   
        http://www.springframework.org/schema/util 
        http://www.springframework.org/schema/util/spring-util-4.0.xsd"
	default-autowire="byName">

    <aop:aspectj-autoproxy />
	<context:component-scan base-package="com.test" />
	<import resource="classpath:dubbo-provider.xml" />
</beans>
  • 加载Spring配置,启动服务:
package com.test;

import java.io.IOException;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test {
	public static void main(String[] args) throws Exception {
		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("classpath:springmvc.xml");
		context.start();
		
		System.out.println("Dubbo provider start...");
		
		try {
			System.in.read();	// 按任意键退出
		} catch (IOException e) {
			e.printStackTrace();
		} 
	}
}

###4. 服务消费者实现

  • 项目结构
    这里写图片描述
  • 在dubbo-consumer.xml中声明所所需要消费的服务
<?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="dubbo_consumer" />       
      <!-- 使用multicast广播注册中心暴露发现服务地址 -->    
    <dubbo:registry  protocol="zookeeper" address="zookeeper://127.0.0.1:2181" />         
      <!-- 生成远程服务代理,可以和本地bean一样使用demoService -->    
    <dubbo:reference id="demoService" interface="com.test.DemoService" />    
</beans>   
  • 在springmvc.xml中扫描service注解并将dubbo-consumer.xml中的相关的dubbo配置引入进来
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:util="http://www.springframework.org/schema/util" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/aop   
        http://www.springframework.org/schema/aop/spring-aop-4.0.xsd   
        http://www.springframework.org/schema/beans   
        http://www.springframework.org/schema/beans/spring-beans-4.0.xsd   
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-4.0.xsd   
        http://www.springframework.org/schema/util 
        http://www.springframework.org/schema/util/spring-util-4.0.xsd"
	default-autowire="byName">

    <aop:aspectj-autoproxy />
	<context:component-scan base-package="com.test" />
	<import resource="classpath:/dubbo-consumer.xml" />
</beans>
  • 加载Spring配置,调用服务:
package com.test;

import java.io.IOException;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test {
	public static void main(String[] args) {
		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "classpath:springmvc.xml" });

		context.start();
		DemoService demoService = (DemoService) context.getBean("demoService");

		System.out.println(demoService.sayHello("哈哈哈"));
		try {
			System.in.read();
		} catch (IOException e) {
			e.printStackTrace();
		}

	}
}

  • 如果出现以下结果则调用成功
    这里写图片描述
  • 通过dubbo-admin管理后台可以看到服务的提供方与消费方
    具体搭建可参考博客:http://blog.csdn.net/jingyangv587/article/details/78904369
    提供方
    这里写图片描述
    消费者
    这里写图片描述

点击下载示例项目(含admin包)
参考博客:https://www.cnblogs.com/Javame/p/3632473.html

想进一步了解dubbo请移步我的另外的dubob相关的文章:https://blog.csdn.net/jingyangV587/article/details/84983770

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