dubbo在我感覺，是將一個一個系統裡面的mvc，再次分離了出來，解耦的作用，與spring無縫整合的一個東西

程式碼如下：dubbo的配置檔案

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xmlns="http://www.springframework.org/schema/beans"
       xsi:schemaLocation
 
="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
       http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!-- 提供方應用名稱，用於計算依賴關係 -->
    <dubbo:application name="demo-provider" />
    
    <!--
 
 使用zookeeper註冊中心暴露服務地址 -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
    
    <!-- 使用dubbo協議，在20880埠暴露服務 -->
    <dubbo:protocol name="dubbo" port="20880"/>
    
    <!-- service實現類作為本地的一個bean -->
    <bean id="demoProviderService" class="com.studyDubbo.service.impl.DemoProviderServiceImpl"
 
/>
    
    <!-- 宣告需要暴露的服務介面 -->
    <dubbo:service interface="com.studyDubbo.service.DemoProviderService" ref="demoProviderService"/>

</beans>

service：

public interface DemoProviderService {

    String sayHello(String name);
}

servie的實現類：

public class DemoProviderServiceImpl implements DemoProviderService {
    @Override
    public String sayHello(String name) {
        return "服務001";
    }
}

測試類：

public class test {

    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"dubbo-demo-provider.xml"});
        context.start();
        System.out.println("服務提供者向zookeeper註冊中心註冊服務成功（埠20880）");
        try {
            System.in.read();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } // press any key to exit
        context.close();
    }
}

依賴的jar包：

<dependencies>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>dubbo</artifactId>
      <version>2.6.0</version>
    </dependency>
    <dependency>
      <groupId>com.101tec</groupId>
      <artifactId>zkclient</artifactId>
      <version>0.10</version>
    </dependency>
    <dependency>
      <groupId>org.apache.curator</groupId>
      <artifactId>curator-framework</artifactId>
      <version>4.0.1</version>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.46</version>
    </dependency>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.7.25</version>
    </dependency>
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>3.4</version>
    </dependency>
    <dependency>
      <groupId>io.netty</groupId>
      <artifactId>netty-all</artifactId>
      <version>4.0.35.Final</version>
    </dependency>
  </dependencies>