Dubbo新手入门实例HelloWorld(基于Zookeeper注册中心)

最近刚接触dubbo,新手入门遇到好多麻烦,网上搜来的入门demo也是各种问题,百般周折自己终于倒腾出来了,与大家共享~

1.创建服务方项目dubbo-server,在pom.xml中构建项目依赖

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1. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
2.     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">  
3.     <modelVersion>4.0.0</modelVersion>  
4.   
5.     <groupId>com.xbz</groupId>  
6.     <artifactId>dubbo-server</artifactId>  
7.     <version>0.0.1-SNAPSHOT</version>  
8.     <packaging>jar</packaging>  
9.   
10.     <name>server</name>  
11.     <url>http://maven.apache.org</url>  
12.   
13.     <properties>  
14.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
15.     </properties>  
16.   
17.     <dependencies>  
18.         <!-- spring begin -->  
19.         <dependency>  
20.             <groupId>org.springframework</groupId>  
21.             <artifactId>spring-context</artifactId>  
22.             <version>4.1.6.RELEASE</version>  
23.         </dependency>  
24.         <!-- spring end -->  
25.   
26.         <!-- dubbo begin -->  
27.         <dependency>  
28.             <groupId>com.alibaba</groupId>  
29.             <artifactId>dubbo</artifactId>  
30.             <version>2.5.3</version>  
31.         </dependency>  
32.         <!-- dubbo end -->  
33.   
34.         <!-- 注册中心zookeeper begin -->  
35.         <dependency>  
36.             <groupId>org.apache.zookeeper</groupId>  
37.             <artifactId>zookeeper</artifactId>  
38.             <version>3.3.6</version>  
39.         </dependency>  
40.         <!-- 注册中心zookeeper end -->  
41.   
42.         <!-- log begin -->  
43.         <dependency>  
44.             <groupId>commons-logging</groupId>  
45.             <artifactId>commons-logging</artifactId>  
46.             <version>1.1.1</version>  
47.         </dependency>  
48.         <dependency>  
49.             <groupId>log4j</groupId>  
50.             <artifactId>log4j</artifactId>  
51.             <version>1.2.15</version>  
52.             <exclusions>  
53.                 <exclusion>  
54.                     <groupId>com.sun.jdmk</groupId>  
55.                     <artifactId>jmxtools</artifactId>  
56.                 </exclusion>  
57.                 <exclusion>  
58.                     <groupId>com.sun.jmx</groupId>  
59.                     <artifactId>jmxri</artifactId>  
60.                 </exclusion>  
61.                 <exclusion>  
62.                     <artifactId>jms</artifactId>  
63.                     <groupId>javax.jms</groupId>  
64.                 </exclusion>  
65.                 <exclusion>  
66.                     <artifactId>mail</artifactId>  
67.                     <groupId>javax.mail</groupId>  
68.                 </exclusion>  
69.             </exclusions>  
70.         </dependency>  
71.         <!-- log end -->  
72.           
73.         <!-- other begin -->  
74.         <dependency>  
75.             <groupId>org.jboss.netty</groupId>  
76.             <artifactId>netty</artifactId>  
77.             <version>3.2.0.Final</version>  
78.         </dependency>  
79.         <dependency>  
80.             <groupId>com.101tec</groupId>  
81.             <artifactId>zkclient</artifactId>  
82.             <version>0.8</version>  
83.         </dependency>  
84.         <!-- other end -->  
85.     </dependencies>  
86. </project>  

2.测试接口DemoService和实现类DemoServiceImpl

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1. package com.xbz.service;  
2.   
3. public interface DemoService {  
4.   
5.     String sayHello(String name);  
6.   
7. }  

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1. package com.xbz.service.impl;  
2.   
3. import com.xbz.service.DemoService;  
4.   
5. public class DemoServiceImpl implements DemoService {  
6.   
7.     public String sayHello(String name) {  
8.         System.out.println("init : " + name);  
9.         return "hello " + name;  
10.     }  
11.   
12. }  

3.applicationProvider.xml

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1. <?xml version="1.0" encoding="UTF-8"?>  
2. <beans xmlns="http://www.springframework.org/schema/beans"  
3.     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"  
4.     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 ">  
5.     <dubbo:application name="dubbo-demo" />  
6.     <!-- zookeeper注册中心 -->  
7.     <dubbo:registry address="zookeeper://127.0.0.1:2181" />  
8.     <dubbo:protocol name="dubbo" port="20880" />  
9.       
10.     <!-- 和本地bean一样实现服务 -->   
11.     <bean id="demoService" class="com.xbz.service.impl.DemoServiceImpl" />  
12.   
13.     <!-- 向注册中心注册暴漏服务地址,注册服务 -->  
14.     <dubbo:service interface="com.xbz.service.DemoService"  
15.         ref="demoService" executes="10" />  
16.   
17. </beans>  

4.服务方主方法ServerMain

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1. package main;  
2.   
3. import java.io.IOException;  
4.   
5. import org.springframework.context.support.ClassPathXmlApplicationContext;  
6.   
7. public class ServerMain {  
8.   
9.     public static void main(String[] args) throws IOException {  
10.   
11.         ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext( new String[] { "applicationProvider.xml" });  
12.         context.start();  
13.   
14.         System.out.println("输入任意按键退出 ~ ");  
15.         System.in.read();  
16.         context.close();  
17.     }  
18. }  

至此,服务方的配置就已经完成了~下面是服务方项目结构:

接下来我们创建客户端消费方dubbo-client项目
1.创建dubbo-client,在pom.xml中构建项目依赖

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1. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
2.     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">  
3.     <modelVersion>4.0.0</modelVersion>  
4.   
5.     <groupId>com.xbz</groupId>  
6.     <artifactId>dubbo-client</artifactId>  
7.     <version>0.0.1-SNAPSHOT</version>  
8.     <packaging>jar</packaging>  
9.   
10.     <name>client</name>  
11.     <url>http://maven.apache.org</url>  
12.   
13.     <properties>  
14.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
15.     </properties>  
16.   
17.     <dependencies>  
18.         <!-- spring begin -->  
19.         <dependency>  
20.             <groupId>org.springframework</groupId>  
21.             <artifactId>spring-context</artifactId>  
22.             <version>4.1.6.RELEASE</version>  
23.         </dependency>  
24.         <!-- spring end -->  
25.   
26.         <!-- dubbo begin -->  
27.         <dependency>  
28.             <groupId>com.alibaba</groupId>  
29.             <artifactId>dubbo</artifactId>  
30.             <version>2.5.3</version>  
31.         </dependency>  
32.         <!-- dubbo end -->  
33.   
34.         <!-- 注册中心zookeeper begin -->  
35.         <dependency>  
36.             <groupId>org.apache.zookeeper</groupId>  
37.             <artifactId>zookeeper</artifactId>  
38.             <version>3.3.6</version>  
39.         </dependency>  
40.         <!-- 注册中心zookeeper end -->  
41.   
42.         <!-- log begin -->  
43.         <dependency>  
44.             <groupId>log4j</groupId>  
45.             <artifactId>log4j</artifactId>  
46.             <version>1.2.15</version>  
47.             <exclusions>  
48.                 <exclusion>  
49.                     <groupId>com.sun.jdmk</groupId>  
50.                     <artifactId>jmxtools</artifactId>  
51.                 </exclusion>  
52.                 <exclusion>  
53.                     <groupId>com.sun.jmx</groupId>  
54.                     <artifactId>jmxri</artifactId>  
55.                 </exclusion>  
56.                 <exclusion>  
57.                     <artifactId>jms</artifactId>  
58.                     <groupId>javax.jms</groupId>  
59.                 </exclusion>  
60.                 <exclusion>  
61.                     <artifactId>mail</artifactId>  
62.                     <groupId>javax.mail</groupId>  
63.                 </exclusion>  
64.             </exclusions>  
65.         </dependency>  
66.         <!-- log end -->  
67.   
68.         <!-- other begin -->  
69.         <dependency>  
70.             <groupId>com.101tec</groupId>  
71.             <artifactId>zkclient</artifactId>  
72.             <version>0.8</version>  
73.         </dependency>  
74.         <dependency>  
75.             <groupId>com.xbz</groupId>  
76.             <artifactId>dubbo-server</artifactId>  
77.             <version>0.0.1-SNAPSHOT</version>  
78.         </dependency>  
79.         <!-- other end -->  
80.     </dependencies>  
81. </project>  

2.applicationConsumer.xml

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1. <?xml version="1.0" encoding="UTF-8"?>  
2. <beans xmlns="http://www.springframework.org/schema/beans"  
3.     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"  
4.     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
5. http://code.alibabatech.com/schema/dubbo    http://code.alibabatech.com/schema/dubbo/dubbo.xsd">  
6.     <dubbo:application name="consumer-of-dubbo-demo" />  
7.   
8.     <dubbo:registry address="zookeeper://127.0.0.1:2181" />  
9.   
10.     <!-- 向注册中心订阅服务 -->  
11.     <dubbo:reference id="demoService" interface="com.xbz.service.DemoService" />  
12. </beans>   

3.客户端消费方主方法ClientMain

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1. package main;  
2.   
3. import org.springframework.context.support.ClassPathXmlApplicationContext;  
4.   
5. import com.xbz.service.DemoService;  
6.   
7. public class ClientMain {  
8.     public static void main(String[] args) {  
9.         ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(  
10.                 new String[] { "applicationConsumer.xml" });  
11.         context.start();  
12.         DemoService service = (DemoService) context.getBean("demoService");  
13.         System.out.println(service.sayHello("world"));  
14.         context.close();  
15.     }  
16. }  

客户端消费方项目结构如下

至此,一个基本的dubbo项目就已经构建完成了.在本机上启动zookeeper注册中心(直接解压到英文路径下直接运行根路径下bin/zkServer.cmd启动)

启动服务方

启动成功,线程阻塞~

运行客户端消费方

输出hello world,调用成功 !

此时服务端控制台输出如下

demo下载:http://download.csdn.net/detail/xingbaozhen1210/9532171

zookeeper即下即用版:http://download.csdn.net/detail/xingbaozhen1210/9532177