Dubbo入门学习--Dubbo简单示例

ゝ一纸荒年。 2022-06-16 02:59 181阅读 0赞

## 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。

![Image 1][]

## 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
            ">     
    	
    	<dubbo:application name="hello-world-app" />  
    	
        <dubbo:registry  protocol="zookeeper"  address="localhost:2181"  />
    	
       	<dubbo:protocol name="dubbo"/>   
    	
    	<dubbo:service interface="com.tianjunwei.server.dubbo.service.IDemoServer"
    		ref="demoService" />       
    	
    	<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
            ">     
    	
    	<dubbo:application name="consumer-of-helloworld-app" />      
    	 
    	<dubbo:registry  protocol="zookeeper"  address="localhost:2181" />  
    	       
    	<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。

[Image 1]: