ActiveMQ订阅


import org.apache.activemq.ActiveMQConnectionFactory;  

import javax.jms.*;  
  
public class TopicPublisher {  
    public static void main(String[] args) throws JMSException {  
        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("tcp://10.15.107.98:61616");  
        Connection connection = factory.createConnection();  
        connection.start();  
          
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);  
        Topic topic = session.createTopic("myTopic.messages");  
         
        MessageProducer producer = session.createProducer(topic);  
         //producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);  
        producer.setDeliveryMode(DeliveryMode.PERSISTENT);  
        int n=0;
        while(n<10) {  
            TextMessage message = session.createTextMessage();  
            message.setText(n+":"+n+"message_" + System.currentTimeMillis());  
            producer.send(message);  
            System.out.println("Sent message: " + message.getText());  
  
            try {  
                Thread.sleep(1000);  
                n++;
            } catch (InterruptedException e) {  
                e.printStackTrace();  
            }  
        }  
  
//      session.close();  
//      connection.stop();  
//      connection.close();  
    }  
}

import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.Topic;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.command.ActiveMQTopic;
  
public class TopicDurableSubscriber {  
	static int n=0;
    public static void main(String[] args) throws JMSException {  
        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("tcp://10.15.107.98:61616");  
        Connection connection = factory.createConnection();  
        //持久化订阅要在客户端指定ID
        connection.setClientID("client-name2");
        connection.start();  
        
        //ActiveMQTopic topic = new ActiveMQTopic("myTopic.messages?consumer.retroactive=true");
        
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);  
         Topic topic = session.createTopic("myTopic.messages");//("myTopic.messages?consumer.retroactive=true");  
         
        //MessageConsumer consumer = session.createConsumer(topic);
         //订阅的时候告诉mq采用持久订阅，并给一个名字
         MessageConsumer consumer = session.createDurableSubscriber(topic,"ljy2");  
         
        //Message mes=consumer.receive();
        //System.out.println("Received message:==== " +  ((TextMessage)mes).getText());
        consumer.setMessageListener(new MessageListener() {  
            public void onMessage(Message message) {  
                TextMessage tm = (TextMessage) message;  
                try {  
                    System.out.println("Received message: " + tm.getText());
                    if(++n>2) System.exit(0);
                } catch (JMSException e) {  
                    e.printStackTrace();  
                }  
            }  
        });  
//      session.close();  
//      connection.stop();  
//      connection.close();  
    }  
}


import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.Topic;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.command.ActiveMQTopic;

public class TopicRetroactiveSubscriber {
	static int n = 0;

	public static void main(String[] args) throws JMSException {
		ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(
				"tcp://10.15.107.98:61616");
		Connection connection = factory.createConnection();

		connection.start();

		// ActiveMQTopic topic = new
		// ActiveMQTopic("myTopic.messages?consumer.retroactive=true");

		Session session = connection.createSession(false,
				Session.AUTO_ACKNOWLEDGE);
		// 追溯历史消息，在创建主题时?consumer.retroactive=true，同时修改activemq配置文件
		// <destinationPolicy>
		// <policyMap>
		// <policyEntries>
		// <policyEntry topic=">" >
		// 增加下面的配置
		// <subscriptionRecoveryPolicy>
		// <fixedCountSubscriptionRecoveryPolicy maximumSize="1024"/>
		// </subscriptionRecoveryPolicy>
		// </policyEntry>
		// <policyEntry queue=">" producerFlowControl="true" memoryLimit="1mb">
		// </policyEntry>
		// </policyEntries>
		// </policyMap>
		// </destinationPolicy>

		Topic topic = session
				.createTopic("myTopic.messages?consumer.retroactive=true");// ("myTopic.messages?consumer.retroactive=true");

		MessageConsumer consumer = session.createConsumer(topic);

		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();
	}
}


import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.Topic;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.command.ActiveMQTopic;
  
public class TopicSubscriber {  
	static int n=0;
    public static void main(String[] args) throws JMSException {  
        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("tcp://10.15.107.98:61616");  
        Connection connection = factory.createConnection();  
        connection.setClientID("client-name");
        connection.start();  
        
        //ActiveMQTopic topic = new ActiveMQTopic("myTopic.messages?consumer.retroactive=true");
        
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);  
         Topic topic = session.createTopic("myTopic.messages?consumer.retroactive=true");//("myTopic.messages?consumer.retroactive=true");  
         
        //MessageConsumer consumer = session.createConsumer(topic);
 
         MessageConsumer consumer = session.createDurableSubscriber(topic,"ljy");  
         
        //Message mes=consumer.receive();
        //System.out.println("Received message:==== " +  ((TextMessage)mes).getText());
        consumer.setMessageListener(new MessageListener() {  
            public void onMessage(Message message) {  
                TextMessage tm = (TextMessage) message;  
                try {  
                    System.out.println("Received message: " + tm.getText());
                    if(++n>2) System.exit(0);
                } catch (JMSException e) {  
                    e.printStackTrace();  
                }  
            }  
        });  
//      session.close();  
//      connection.stop();  
//      connection.close();  
    }  
}

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

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;

public class Sender {
    private static final int SEND_NUMBER = 5;

    public static void main(String[] args) {
        // ConnectionFactory ：连接工厂，JMS 用它创建连接
        ConnectionFactory connectionFactory;
        // Connection ：JMS 客户端到JMS Provider 的连接
        Connection connection = null;
        // Session： 一个发送或接收消息的线程
        Session session;
        // Destination ：消息的目的地;消息发送给谁.
        Destination destination;
        // MessageProducer：消息发送者
        MessageProducer producer;
        // TextMessage message;
        // 构造ConnectionFactory实例对象，此处采用ActiveMq的实现jar
        connectionFactory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER,
                ActiveMQConnection.DEFAULT_PASSWORD, "tcp://10.15.107.98:61616");
        try {
            // 构造从工厂得到连接对象
            connection = connectionFactory.createConnection();
            // 启动
            connection.start();
            // 获取操作连接
            session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);
            // 获取session注意参数值xingbo.xu-queue是一个服务器的queue，须在在ActiveMq的console配置
            destination = session.createQueue("FirstQueue");
            // 得到消息生成者【发送者】
            producer = session.createProducer(destination);
            // 设置不持久化，此处学习，实际根据项目决定
            producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
            // 构造消息，此处写死，项目就是参数，或者方法获取
            sendMessage(session, producer);
            session.commit();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (null != connection)
                    connection.close();
            } catch (Throwable ignore) {
            }
        }
    }

    public static void sendMessage(Session session, MessageProducer producer) throws Exception {
        for (int i = 1; i <= SEND_NUMBER; i++) {
            TextMessage message = session.createTextMessage("ActiveMq 发送的消息" + i);
            // 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);
        }
    }
}

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.MessageConsumer;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;

public class Receiver {
    public static void main(String[] args) {
        // ConnectionFactory ：连接工厂，JMS 用它创建连接
        ConnectionFactory connectionFactory;
        // Connection ：JMS 客户端到JMS Provider 的连接
        Connection connection = null;
        // Session： 一个发送或接收消息的线程
        Session session;
        // Destination ：消息的目的地;消息发送给谁.
        Destination destination;
        // 消费者，消息接收者
        MessageConsumer consumer;
        connectionFactory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER,
                ActiveMQConnection.DEFAULT_PASSWORD, "tcp://10.15.107.98:61616");
        try {
            // 构造从工厂得到连接对象
            connection = connectionFactory.createConnection();
            // 启动
            connection.start();
            // 获取操作连接
            session = connection.createSession(Boolean.FALSE, Session.AUTO_ACKNOWLEDGE);
            // 获取session注意参数值xingbo.xu-queue是一个服务器的queue，须在在ActiveMq的console配置
            destination = session.createQueue("FirstQueue");//?consumer.retroactive=true
            consumer = session.createConsumer(destination);
            while (true) {
                // 设置接收者接收消息的时间，为了便于测试，这里谁定为100s
                TextMessage message = (TextMessage) consumer.receive(500000);
                if (null != message) {
                    System.out.println("收到消息" + message.getText());
                } else {
                    break;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (null != connection)
                    connection.close();
            } catch (Throwable ignore) {
            }
        }
    }
}

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