ActiveMQ消息队列学习

ActiveMQ消息队列是apache下面的开源的消息中间件，使用方便扩展性好。下面我就我学习mq跟大家分享一下：

1. ActiveMQ环境的配置
   下载ActiveMQ：http://activemq.apache.org/
   解压缩apache-activemq-5.9.1-bin.zip，然后双击apache-activemq-5.9.1\bin\win64\activemq.bat运行ActiveMQ程序。
2. 启动ActiveMQ以后，登陆：http://localhost:8161/admin/ 用户名和密码都是admin

3. 打开eclipse创建一个Java项目
   

    1. 创建一个消息生产者

package com.java.activemq;import javax.jms.Connection;import javax.jms.ConnectionFactory;import javax.jms.Destination;import javax.jms.JMSException;import javax.jms.MessageProducer;import javax.jms.Session;import javax.jms.TextMessage;import org.apache.activemq.ActiveMQConnection;import org.apache.activemq.ActiveMQConnectionFactory;public class MessageProvider {    private static final String USERNAME=ActiveMQConnection.DEFAULT_USER;    private static final String PASSWORD=ActiveMQConnection.DEFAULT_PASSWORD;    private static final String BROKERURL=ActiveMQConnection.DEFAULT_BROKER_URL;    public static void main(String[] args) {        ConnectionFactory connectionFactory;//创建连接工厂        Connection connection = null;//创建连接        Session session;//创建session 消息的线程        Destination destination;//创建消息发送目的地        MessageProducer messageProducer;//消息生产者        try {            connectionFactory =                             new ActiveMQConnectionFactory(MessageProvider.USERNAME, MessageProvider.PASSWORD, MessageProvider.BROKERURL);            connection = connectionFactory.createConnection();            connection.start();            session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE);            destination = session.createQueue("FirstQueue1");            messageProducer = session.createProducer(destination);            sendMessage(session, messageProducer);            session.commit();        } catch (JMSException e) {            e.printStackTrace();        }finally{            try {                if(connection != null){                    connection.close();                }            } catch (JMSException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }        }    }    public static void sendMessage(Session session , MessageProducer messageProducer)throws JMSException{        for(int i = 0 ;i<10;i++){            TextMessage message = session.createTextMessage("activeMQ发送的消息："+i);            messageProducer.send(message);            System.out.println("发送消息：activeMQ发送的消息："+i);        }    }}运行的效果如下：

log4j:WARN No appenders could be found for logger (org.apache.activemq.thread.TaskRunnerFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
发送消息：activeMQ发送的消息：0
发送消息：activeMQ发送的消息：1
发送消息：activeMQ发送的消息：2
发送消息：activeMQ发送的消息：3
发送消息：activeMQ发送的消息：4
发送消息：activeMQ发送的消息：5
发送消息：activeMQ发送的消息：6
发送消息：activeMQ发送的消息：7
发送消息：activeMQ发送的消息：8
发送消息：activeMQ发送的消息：9

     2. 创建一个消息消费者

package com.java.activemq;import javax.jms.Connection;import javax.jms.ConnectionFactory;import javax.jms.Destination;import javax.jms.JMSException;import javax.jms.MessageConsumer;import javax.jms.MessageProducer;import javax.jms.Session;import javax.jms.TextMessage;import org.apache.activemq.ActiveMQConnection;import org.apache.activemq.ActiveMQConnectionFactory;public class JMSConsumer {    private static final String USERNAME=ActiveMQConnection.DEFAULT_USER;    private static final String PASSWORD=ActiveMQConnection.DEFAULT_PASSWORD;    private static final String BROKERURL=ActiveMQConnection.DEFAULT_BROKER_URL;    public static void main(String[] args) {            ConnectionFactory connectionFactory;//创建连接工厂            Connection connection = null;//创建连接            Session session;//创建session 消息的线程            Destination destination;//创建消息发送目的地            MessageConsumer messageConsumer;//消息生产者            try {                connectionFactory =                                 new ActiveMQConnectionFactory(                                        JMSConsumer.USERNAME, JMSConsumer.PASSWORD, JMSConsumer.BROKERURL);                connection = connectionFactory.createConnection();                connection.start();                session = connection.createSession(Boolean.FALSE, Session.AUTO_ACKNOWLEDGE);                destination = session.createQueue("FirstQueue1");                messageConsumer = session.createConsumer(destination);                while(true){                    TextMessage textMessage = (TextMessage)messageConsumer.receive(100000);                    if(textMessage != null){                        System.out.println("接收到的消息为："+textMessage.getText());                    }else{                        break;                    }                }            } catch (JMSException e) {                e.printStackTrace();            }finally{                try {                    if(connection != null){                        connection.close();                    }                } catch (JMSException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }    }}

执行的效果是：

log4j:WARN No appenders could be found for logger (org.apache.activemq.thread.TaskRunnerFactory).log4j:WARN Please initialize the log4j system properly.log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.接收到的消息为：activeMQ发送的消息：0接收到的消息为：activeMQ发送的消息：1接收到的消息为：activeMQ发送的消息：2接收到的消息为：activeMQ发送的消息：3接收到的消息为：activeMQ发送的消息：4接收到的消息为：activeMQ发送的消息：5接收到的消息为：activeMQ发送的消息：6接收到的消息为：activeMQ发送的消息：7接收到的消息为：activeMQ发送的消息：8接收到的消息为：activeMQ发送的消息：9