ActiveMQ實戰之 Queue點對點消息

對于此類消息，其實就是指使用JMS中的發P2P（點對點）消息模型的消息，下面是一個簡單的例子
消息發送者

package com.googlecode.garbagecan.jmsstudy.activemq.queue;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import javax.jms.*;
public class Sender {
    public static void main(String[] args) throws JMSException {
        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory("tcp://localhost:61616");
        Connection connection = connectionFactory.createConnection();
        connection.start();

    Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
    Destination destination = session.createQueue("myQueue");

    MessageProducer producer = session.createProducer(destination);
    producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);

    while(true) {
        TextMessage message = session.createTextMessage();
        message.setText("message_" + System.currentTimeMillis());
        producer.send(message);
        System.out.println("Sent message: " + message.getText());

        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }


//      session.close();
//      connection.stop();
//      connection.close();
    }
}</pre>消息接收者 
  
package com.googlecode.garbagecan.jmsstudy.activemq.queue;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import javax.jms.*;
public class Receiver {
    public static void main(String[] args) throws JMSException {
        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory("tcp://localhost:61616");
        Connection connection = connectionFactory.createConnection();
        connection.start();

    Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
    Destination destination = session.createQueue("myQueue");
    MessageConsumer consumer = session.createConsumer(destination);
    consumer.setMessageListener(new MessageListener() {
        public void onMessage(Message message) {
            TextMessage tm = (TextMessage) message;
            try {
                System.out.println("Received message: " + tm.getText());
            } catch (JMSException e) {
                e.printStackTrace();
            }
        }
    });


//      session.close();
//      connection.stop();
//      connection.close();
    }
}</pre>分別運行兩個類，就可以看到Sender發布的消息，Receiver都可以接受到。