【原创】JMS发布者订阅者【异步接收消息】

发布订阅模式和PTP方式不同之处为后者依赖于一个Topic话题：

package com.thunisoft.jms.mine.topic;



import java.util.HashMap;



import javax.jms.Connection;

import javax.jms.ConnectionFactory;

import javax.jms.DeliveryMode;

import javax.jms.Destination;

import javax.jms.JMSException;

import javax.jms.MessageProducer;

import javax.jms.ObjectMessage;

import javax.jms.Session;

import javax.jms.TopicPublisher;



import org.apache.activemq.ActiveMQConnection;

import org.apache.activemq.ActiveMQConnectionFactory;



/**

 * JMS生产者

 * 

 * @author zhangxsh

 * 

 */

public class Producer {



    /**

     * @param args

     * @throws Exception

     */

    public static void main(String[] args) throws Exception {

        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(

                ActiveMQConnection.DEFAULT_USER,

                ActiveMQConnection.DEFAULT_PASSWORD, "tcp://localhost:61616");

        Connection connection = connectionFactory.createConnection();

        connection.start();

        Session session = connection.createSession(Boolean.TRUE,

                Session.AUTO_ACKNOWLEDGE);

        

        //根据Topic创建目标地

        Destination destination = session.createTopic("TestTopic");         MessageProducer producer = session.createProducer(destination);



        producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);

        for (int i = 1; i <= 10; i++) {

            ObjectMessage message = session.createObjectMessage();

            HashMap m = new HashMap();

            m.put("key" + i, i);

            message.setObject(m);

            // 发送消息到目的地方

            // System.out.println("发送消息：" + "ActiveMq 发送的消息" + i);

            producer.send(message);

        }

        session.commit();

    }

}

 

---

 

订阅者（同样需要注册一个Listener）：

package com.thunisoft.jms.mine.topic;



import org.apache.activemq.ActiveMQConnectionFactory;



import javax.jms.*;



public class TopicSubscriber {

    public static void main(String[] args) throws JMSException {

        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(

                "tcp://localhost:61616");

        Connection connection = factory.createConnection();

        connection.start();



        Session session = connection.createSession(false,

                Session.AUTO_ACKNOWLEDGE);

        Topic topic = session.createTopic("TestTopic");



        MessageConsumer consumer = session.createConsumer(topic);

        consumer.setMessageListener(new MessageListener() {

            public void onMessage(Message message) {

                ObjectMessage tm = (ObjectMessage) message;

                try {

                    System.out.println("Received message: " + tm.getObject());

                } catch (JMSException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }

            }

        });

        // session.close();

        // connection.stop();

        // connection.close();

    }

}