Apache ActiveMQ是Apache软件基金会所研发的开放源码消息中间件；由于ActiveMQ是一个纯Java程式，因此只需要操作系统支援Java虚拟机，ActiveMQ便可执行。
支持Java消息服务 (JMS) 1.1 版本
Spring Framework
集群 (Clustering)
支持的编程语言包括：C、C++、C#、Delphi、Erlang、Adobe Flash、Haskell、Java、JavaScript、Perl、PHP、Pike、Python和Ruby [1]
协议支持包括：OpenWire、REST、STOMP、WS-Notification、XMPP以及AMQP
好，我们先写个demo来试试 ActiveMQ的效果.
首先我们要下载ActiveMQ，下载地址：
/dyn/closer.cgi?path=/activemq/apache-activemq/5.8.0/apache-activemq-5.8.0-bin.zip
解压后，在x:/apache-activemq-5.8.0-bin/bin 目录下执行 activemq.bat即可启动 ActiveMQ，
由于ActiveMQ内置了Jetty web服务器，当ActiveMQ启动成功后，可以通过：http://localhost:8161/admin/访问ActiveMQ的控制台，默认的用户名和密码是：admin。
至此ActiveMQ 服务已经启动了，接下来我们先将x:/apache-activemq-5.8.0-bin/activemq-all-5.8.0.jar拷贝到你的classpath目录下，利用Java写个demo来尝试一下这个消息中间件。
JmsSender：
ConnectionFactory connectionFactory = new ActiveMQConnectionFactory("tcp://127.0.0.1:61616"); Connection connection = connectionFactory.createConnection(); connection.start(); Session session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE); Destination destination = session.createQueue("Test.foo"); MessageProducer producer = session.createProducer(destination); producer.setDeliveryMode(DeliveryMode.PERSISTENT);for(int i=0; i<100; i++) { int id = i+1;ObjectMessage message = session.createObjectMessage();message.setObject(new User(id, "张三"+id, "123456"));producer.send(message); } mit();session.close(); connection.close();
JmsReceiver：
ConnectionFactory connectionFactory = new ActiveMQConnectionFactory("tcp://127.0.0.1:61616"); Connection connection = connectionFactory.createConnection(); connection.start();final Session session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE); Destination destination = session.createQueue("Test.foo");MessageConsumer consumer = session.createConsumer(destination);//listener 方式 consumer.setMessageListener(new MessageListener() { public void onMessage(Message msg) { ObjectMessage message = (ObjectMessage) msg; //TODO something.... try {User user = (User) message.getObject();System.out.println("收到消息："+user);} catch (JMSException e1) {// TODO Auto-generated catch blocke1.printStackTrace();} try {mit();} catch (JMSException e) {// TODO Auto-generated catch blocke.printStackTrace();} } }); TimeUnit.MINUTES.sleep(1); session.close(); connection.close();
运行后，得到如下消息：
log4j:WARN No appenders could be found for logger (org.apache.activemq.transport.WireFormatNegotiator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See /log4j/1.2/faq.html#noconfig for more info.
收到消息：User [id=1, username=张三1, password=123456, now=Fri Jun 28 12:04:32 CST ]
收到消息：User [id=2, username=张三2, password=123456, now=Fri Jun 28 12:04:33 CST ]
.......
