dubbo的学习使用，第一章

dubbo在我感觉，是将一个一个系统里面的mvc，再次分离了出来，解耦的作用，与spring无缝集成的一个东西

代码如下：dubbo的配置文件

<?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">

    <!-- 提供方应用名称，用于计算依赖关系 -->
    <dubbo:application name="demo-provider" />
    
    <!-- 使用zookeeper注册中心暴露服务地址 -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
    
    <!-- 使用dubbo协议，在20880端口暴露服务 -->
    <dubbo:protocol name="dubbo" port="20880"/>
    
    <!-- service实现类作为本地的一个bean -->
    <bean id="demoProviderService" class="com.studyDubbo.service.impl.DemoProviderServiceImpl"/>
    
    <!-- 声明需要暴露的服务接口 -->
    <dubbo:service interface="com.studyDubbo.service.DemoProviderService" ref="demoProviderService"/>

</beans>

service：

public interface DemoProviderService {

    String sayHello(String name);
}

servie的实现类：

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

测试类：

public class test {

    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"dubbo-demo-provider.xml"});
        context.start();
        System.out.println("服务提供者向zookeeper注册中心注册服务成功（端口20880）");
        try {
            System.in.read();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } // press any key to exit
        context.close();
    }
}

依赖的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>