Apache ActiveMQ消息中间件的基本使用

Apache ActiveMQ是Apache软件基金会所研发的开放源码消息中间件；由于ActiveMQ是一个纯Java程式，因此只需要操作系统支援Java虚拟机，ActiveMQ便可执行。

支持Java消息服务 (JMS) 1.1 版本
Spring Framework
集群 (Clustering)
支持的编程语言包括：C、C++、C#、Delphi、Erlang、Adobe Flash、Haskell、Java、JavaScript、Perl、PHP、Pike、Python和Ruby [1]
协议支持包括：OpenWire、REST、STOMP、WS-Notification、XMPP以及AMQP

好，我们先写个demo来试试 ActiveMQ的效果.

首先我们要下载ActiveMQ，下载地址：

http://www.apache.org/dyn/closer.cgi?path=/activemq/apache-activemq/5.8.0/apache-activemq-5.8.0-bin.zip

解压后，在x:/apache-activemq-5.8.0-bin/bin 目录下执行 activemq.bat即可启动 ActiveMQ，

由于ActiveMQ内置了Jetty web服务器，当ActiveMQ启动成功后，可以通过：http://localhost:8161/admin/访问ActiveMQ的控制台，默认的用户名和密码是：admin。

至此ActiveMQ 服务已经启动了，接下来我们先将x:/apache-activemq-5.8.0-bin/activemq-all-5.8.0.jar拷贝到你的classpath目录下，利用Java写个demo来尝试一下这个消息中间件。

一、显示发送者的对象

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.MessageProducer;
import javax.jms.ObjectMessage;
import javax.jms.Session;

import org.apache.activemq.ActiveMQConnectionFactory;

public class Sender {

    public static void main(String[] args) throws Exception {
        aa();
    }
    public static void aa() throws Exception{
        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory("tcp://127.0.0.1:61616");  
          
        Connection connection = connectionFactory.createConnection();  
        connection.start();  
        
        Session session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);  
        Destination destination = session.createQueue("Test.foo");  

        MessageProducer producer = session.createProducer(destination);  
        producer.setDeliveryMode(DeliveryMode.PERSISTENT);
        for(int i=0; i<100; i++) {  
            int id = i+1;
            ObjectMessage message = session.createObjectMessage();
            message.setObject(new User(id, "张三"+id, "123456"));
            producer.send(message);  
        }  
        System.out.println("ok...");
        session.commit();
        session.close();  
        connection.close();  
    }
}

二、接受者对象

import java.util.concurrent.TimeUnit;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.ObjectMessage;
import javax.jms.Session;

import org.apache.activemq.ActiveMQConnectionFactory;

public class Receiver {

	public static void aa() throws Exception{
		ConnectionFactory connectionFactory = new ActiveMQConnectionFactory("tcp://127.0.0.1:61616");  
		  
	    Connection connection = connectionFactory.createConnection();  
	    connection.start();
	  
	    final Session session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);  
	    Destination destination = session.createQueue("Test.foo");
	    
	    MessageConsumer consumer = session.createConsumer(destination);
	    //listener 方式 
	    consumer.setMessageListener(new MessageListener() { 
	 
	        public void onMessage(Message msg) { 
	        	ObjectMessage message = (ObjectMessage) msg; 
	            //TODO something.... 
	            try {
	            	User user = (User) message.getObject();
	            	System.out.println("收到消息："+user.getName());
				} catch (JMSException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				} 
	            try {
					session.commit();
				} catch (JMSException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} 
	        } 
	 
	    }); 
	    TimeUnit.MINUTES.sleep(1); 
	  
	    session.close();  
	    connection.close();
	}
	
	public static void main(String[] args) throws Exception{
		aa();
	}
}

　　

import java.io.Serializable;

public class User implements Serializable {

    private int id;
    
    private String name;
    
    private String pwd;
    
    public User(int id,String name,String pwd){
        this.id=id;
        this.name=name;
        this.pwd=pwd;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
    
}

先运行发送者，然后运行接收者即可。。。。