我們現在來學習下發布Dubbo服務，主要參考dubbo開發包裏的demo源碼；由淺入深的講解下這個小demo；

首先創建一個maven項目dubbo-demo-provider

pom.xml加入依賴：

 1 <dependencies>
 2     <dependency>
 3         <groupId>com.alibaba</groupId>
 4         <artifactId>dubbo</artifactId>
 5         <version>2.6.0</version>
 6
 
     </dependency>
 7     <dependency>
 8         <groupId>com.101tec</groupId>
 9         <artifactId>zkclient</artifactId>
10         <version>0.10</version>
11     </dependency>
12     <dependency>
13         <groupId>org.apache.curator</groupId>
14
 
         <artifactId>curator-framework</artifactId>
15         <version>4.0.1</version>
16     </dependency>
17     <dependency>
18         <groupId>com.alibaba</groupId>
19         <artifactId>fastjson</artifactId>
20         <version>1.2.46</version>
21
 
     </dependency>
22     <dependency>
23         <groupId>log4j</groupId>
24         <artifactId>log4j</artifactId>
25         <version>1.2.17</version>
26     </dependency>
27     <dependency>
28         <groupId>org.slf4j</groupId>
29         <artifactId>slf4j-api</artifactId>
30         <version>1.7.25</version>
31     </dependency>
32     <dependency>
33         <groupId>org.apache.commons</groupId>
34         <artifactId>commons-lang3</artifactId>
35         <version>3.4</version>
36     </dependency>
37     <dependency>
38         <groupId>io.netty</groupId>
39         <artifactId>netty-all</artifactId>
40         <version>4.0.35.Final</version>
41     </dependency>
42 </dependencies>

然後定義一個服務接口：

 1 package com.java1234.service;
 2  
 3 /**
 4  * 服務提供者接口
 5  * @author Administrator
 6  *
 7  */
 8 public interface DemoProviderService {
 9  
10     public String sayHello(String name);
11 }

再定義接口實現類：

 1 package com.java1234.service.impl;
 2  
 3 import com.java1234.service.DemoProviderService;
 4  
 5 /**
 6  * 服務提供者接口實現類
 7  * @author Administrator
 8  *
 9  */
10 public class DemoProviderServiceImpl implements DemoProviderService{
11  
12     public String sayHello(String name) {
13         return "服務員001";
14     }
15  
16 }

然後再搞個dubbo配置文件dubbo-demo-provider.xml：

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3        xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
 4        xmlns="http://www.springframework.org/schema/beans"
 5        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
 6        http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
 7  
 8     <!-- 提供方應用名稱, 用於計算依賴關系 -->
 9     <dubbo:application name="demo-provider"/>
10  
11     <!-- 使用zookeeper註冊中心暴露服務地址 -->
12     <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
13  
14     <!-- 使用dubbo協議在20880端口暴露服務 -->
15     <dubbo:protocol name="dubbo" port="20880"/>
16  
17     <!-- service實現類作為本地的一個bean -->
18     <bean id="demoProviderService" class="com.java1234.service.impl.DemoProviderServiceImpl"/>
19  
20     <!-- 聲明需要暴露的服務接口 -->
21     <dubbo:service interface="com.java1234.service.DemoProviderService" ref="demoProviderService"/>
22      
23  
24 </beans>

測試類：

 1 import java.io.IOException;
 2  
 3 import org.springframework.context.support.ClassPathXmlApplicationContext;
 4  
 5 public class ProviderTest {
 6  
 7     public static void main(String[] args) {
 8         ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"dubbo-demo-provider.xml"});
 9         context.start();
10         System.out.println("服務提供者註冊成功（端口：20880）");
11         try {
12             System.in.read();
13         } catch (IOException e) {
14             // TODO Auto-generated catch block
15             e.printStackTrace();
16         }
17         context.close();
18     }
19 }

然後我們測試發布dubbo服務，

首先我們要先啟動zookeeper服務，

然後我們運行測試類，發布服務註冊到zookeeper註冊中心去；

說明發布服務OK；

發布Dubbo服務介紹