Dubbo入门学习--Dubbo简单示例

1、Zookeeper安装

 从Zookeeper官网下载，进入到bin目录下，在cms中执行zkServer就可以运行Zookeeper了。

2、API接口

创建一个接口jar，此接口在服务提供者和服务消费者中使用

public interface IDemoServer {
  String sayHello(String str);
}

3、服务提供者

applicationContext.xml中添加如下配置：

<?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
        ">     
    <!--应用名称-->
    <dubbo:application name="hello-world-app" />  
    <!--配置Zookeeper连接地址-->
    <dubbo:registry  protocol="zookeeper"  address="localhost:2181"  />
    <!--服务协议-->
    <dubbo:protocol name="dubbo"/>   
    <!--接口-->
    <dubbo:service interface="com.tianjunwei.server.dubbo.service.IDemoServer"
        ref="demoService" />       <!-- 和本地bean一样实现服务 -->
    <!--实现类-->
    <bean id="demoService" class="com.tianjunwei.server.dubbo.service.DemoServerImpl" />
</beans>

接口IDemoServer的实现类

public class DemoServerImpl implements IDemoServer {

  public String sayHello(String str) {
    
    return str;
  }

}

Main函数启动提供服务：

public class Main {


  public static void main(String[] args) {
    ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "applicationProvider.xml" });
    context.start();
    while(true){
      
    }
  }

}

3、服务消费者

applicationContext.xml中如下配置：

<?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-->
    <dubbo:application name="consumer-of-helloworld-app" />      
    <!-- Zookeeper连接信息 --> 
    <dubbo:registry  protocol="zookeeper"  address="localhost:2181" />  
    <!-- 服务接口 -->       
    <dubbo:reference id="demoService" interface="com.tianjunwei.server.dubbo.service.IDemoServer"/>
</beans>

服务调用：

public class ChatAction {
    
     @SuppressWarnings("resource")
    public static void main(String[] args) throws InterruptedException{
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "applicationContext.xml" });
        context.start();
        IDemoServer demoServer = (IDemoServer) context.getBean("demoService");
        System.out.println("client:"+demoServer.sayBye("dubbo"));

    }

}

运行结果：

client：dubbo

可以去官网https://github.com/alibaba/dubbo中参考示例程序。