ActiveMQ开发实例

启动ActiveMQ，直接进入安装目录执行\bin\activemq

如下，启动成功

访问http://localhost:8161/admin/queues.jsp

消息生产者：

package activemq.yang;//ConnectionFactory 是连接工厂，负责创建Connection。 //Connection 负责创建 Session。//Session 创建 MessageProducer（用来发消息） 和 MessageConsumer（用来接收消息）。//Destination 是消息的目的地。import javax.jms.Connection;   import javax.jms.DeliveryMode;   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 Producer2 {/** * @param args */  private String user = ActiveMQConnection.DEFAULT_USER;     private String password = ActiveMQConnection.DEFAULT_PASSWORD;     private String url = "tcp://localhost:61616";     private String subject = "QDEFAULT";     private Destination destination = null;     private Connection connection = null;     private Session session = null;     private MessageProducer producer = null;       private static final int SEND_NUMBER = 5;  // 初始化     private void initialize() throws JMSException, Exception {         ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(user, password, url);         connection = connectionFactory.createConnection();        connection.start();         session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE);         destination = session.createQueue(subject);         producer = session.createProducer(destination);         producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);     }     // 发送消息     public void produceMessage() throws JMSException, Exception {         initialize();         String text = "Hello World";       for (int i = 0; i < SEND_NUMBER; i++){          TextMessage msg = session.createTextMessage(text + i);          System.out.println("Producer:->Sending message: " + text + i);             this.producer.send(msg);         }      session.commit();      System.out.println("Producer:->Message sent complete!");     }     // 关闭连接     public void close() throws JMSException {            if (producer != null)             producer.close();         if (session != null)             session.close();         if (connection != null)             connection.close();          System.out.println("Producer:->Closing connection");   }            public static void main(String[] args) {// TODO Auto-generated method stubProducer2  producer = new Producer2();try {producer.produceMessage();producer.close();} catch (JMSException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}

消息消费者：

package activemq.yang;import javax.jms.Connection;import javax.jms.Destination;import javax.jms.JMSException;import javax.jms.MessageConsumer;import javax.jms.Session;import javax.jms.TextMessage;import org.apache.activemq.ActiveMQConnection;import org.apache.activemq.ActiveMQConnectionFactory;public class Consumer2 {/** * @param args */private String user = ActiveMQConnection.DEFAULT_USER;         private String password = ActiveMQConnection.DEFAULT_PASSWORD;         private String url = "tcp://localhost:61616";         private String subject = "QDEFAULT";         private Destination destination = null;         private Connection connection = null;         private Session session = null;         private MessageConsumer consumer = null;         // 初始化       private void initialize() throws JMSException, Exception {        ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(user, password, url);         connection = connectionFactory.createConnection();           connection.start();           session = connection.createSession(Boolean.FALSE.booleanValue(), Session.AUTO_ACKNOWLEDGE);          destination = session.createQueue(subject);         consumer = session.createConsumer(destination);            }         // 消费消息       public void consumeMessage() throws JMSException, Exception {           initialize();           System.out.println("Consumer:->Begin Receive...");  while (true) {TextMessage message = (TextMessage) consumer.receive(1000);if (null != message) {System.out.println("Consumer:->Receiving message: " + message.getText());} else {System.out.println("Consumer:->Receive completed");  break;}}    }         // 关闭连接       public void close() throws JMSException {           if (consumer != null)               consumer.close();           if (session != null)               session.close();           if (connection != null)               connection.close();           System.out.println("Consumer:->Closing connection");      }public static void main(String[] args) {// TODO Auto-generated method stubConsumer2 consumer = new Consumer2();try {consumer.consumeMessage();consumer.close();} catch (JMSException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}

执行代码，http://localhost:8161/admin/queues.jsp显示如下：