ActiveMQ

ActiveMQ

　　开源消息总线

MQ：message  queue=消息队列

JMS

　　java message service=java消息服务（不同系统信息交换）

队列（queue）

　　功能：就是对消息进行排队，消息生产者和消费者形成一对一关系

queue信息发送与接收

流程：创建连接工厂-->创建连接-->创建会话-->通过会话创建队列-->将队列放进创建的生产者-->创建消息-->生产者发送消息

信息发送

package com.test.queue;

import org.apache.activemq.ActiveMQConnectionFactory;

import javax.jms.*;

public class QueueSender {

    //携程发送消息查询✈票
    public static void send(){
        //东航的服务器
        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("tcp://localhost:61616");
        //连接
        try {
            Connection con = factory.createConnection();
            con.start();
            //会话
            //AUTO_ACKNOWLEDGE创建会话的时候自动确认连接正确
            Session session = con.createSession(false,Session.AUTO_ACKNOWLEDGE);
            //创建队列---------给队列起名first
            Queue queue = session.createQueue("first");
            //消息生产者
            MessageProducer producer = session.createProducer(queue);
            //消息
            TextMessage message = session.createTextMessage("第5条message：hello word");
            //发送
            producer.send(message);

            session.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        send();
    }
}

信息接收

流程：创建连接工厂-->创建连接-->创建会话-->通过会话创建队列-->将队列放进创建的消费者-->监听队列->获取发送来的消息

package com.test.queue;

import org.apache.activemq.ActiveMQConnectionFactory;

import javax.jms.*;

/**
 * Created by MY on 2017/8/2.
 */
public class QueueConsumer {
    //东航读取消息
    public static void recevice(){
        ActiveMQConnectionFactory factory= new ActiveMQConnectionFactory("tcp://localhost:61616");
        try {
            Connection con=factory.createConnection();
            con.start();
            //会话
            Session session=con.createSession(false, Session.AUTO_ACKNOWLEDGE);
            //队列
            Queue queue=session.createQueue("first");
            MessageConsumer meg=session.createConsumer(queue);
            //监听队列
            meg.setMessageListener(new MessageListener() {
                @Override
                public void onMessage(Message message) {
                    try {
                        TextMessage msg=(TextMessage)message;
                        System.out.println(msg.getText());
                    } catch (JMSException e) {
                        e.printStackTrace();
                    }
                }
            });
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    public static void main(String[] args) {
        recevice();
    }
}

Topic（主题）:

　　功能：广播，一对多

package com.test.topic;

import com.test.entity.Book;
import org.apache.activemq.ActiveMQConnectionFactory;

import javax.jms.*;

/**
 * Created by MY on 2017/8/2.
 */
public class TopicSender {
    public static void send(){
        ActiveMQConnectionFactory factory=new ActiveMQConnectionFactory("tcp://localhost:61616");

        try {
            Connection con=factory.createConnection();
            Session session=con.createSession(false, Session.AUTO_ACKNOWLEDGE);
            Topic topic=session.createTopic("topic-first");
            MessageProducer producer=session.createProducer(topic);
            Book bk=new Book();
            bk.setTitle("红楼梦");
            ObjectMessage om= session.createObjectMessage(bk);
            producer.send(om);
            session.close();
        } catch (JMSException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        send();
    }

}

package com.test.topic;

import com.test.entity.Book;
import org.apache.activemq.ActiveMQConnectionFactory;

import javax.jms.*;

/**
 * Created by MY on 2017/8/2.
 */
public class TopicConsumer {
    //收听
    public static void listen(){
        ActiveMQConnectionFactory factory=new ActiveMQConnectionFactory("tcp://localhost:61616");
        factory.setTrustAllPackages(true);
        try {
           Connection con= factory.createConnection();
           con.start();
           Session session= con.createSession(false,Session.AUTO_ACKNOWLEDGE);
            //主题
            Topic topic=session.createTopic("topic-first");
            //消费者
            MessageConsumer consumer=session.createConsumer(topic);
            //监听
            consumer.setMessageListener(new MessageListener() {
                @Override
                public void onMessage(Message message) {
                    ObjectMessage msg=(ObjectMessage)message;
                    try {
                        Book bk=(Book)msg.getObject();
                        System.out.println("1"+bk.getTitle());
                    } catch (JMSException e) {
                        e.printStackTrace();
                    }
                }
            });
        } catch (JMSException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        listen();
    }
}


package com.test.topic;
import com.test.entity.Book;
import org.apache.activemq.ActiveMQConnectionFactory;

import javax.jms.*;

/**
 * Created by MY on 2017/8/2.
 */
public class TopicConsumer2 {
    //收听
    public static void listen2(){
        ActiveMQConnectionFactory factory=new ActiveMQConnectionFactory("tcp://localhost:61616");
        factory.setTrustAllPackages(true);
        try {
            Connection con= factory.createConnection();
            con.start();
            Session session= con.createSession(false,Session.AUTO_ACKNOWLEDGE);
            //主题
            Topic topic=session.createTopic("topic-first");
            //消费者
            MessageConsumer consumer=session.createConsumer(topic);
            //监听
            consumer.setMessageListener(new MessageListener() {
                @Override
                public void onMessage(Message message) {
                    ObjectMessage msg=(ObjectMessage)message;
                    try {
                        Book bk=(Book)msg.getObject();
                        System.out.println("2:"+bk.getTitle());
                    } catch (JMSException e) {
                        e.printStackTrace();
                    }
                }
            });
        } catch (JMSException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        listen2();
    }
}