ActiveMQ接收讯息+发送消息的简单实例
ActiveMQ接收消息+发送消息的简单实例ActiveMQ的一个简单实例-ActiveMQ接收发送消息JMS消息框架——ActiveMQ
ActiveMQ接收消息+发送消息的简单实例
ActiveMQ的一个简单实例-ActiveMQ接收+发送消息 JMS消息框架——ActiveMQ
最近由于公司项目需要 -ActiveMQ接收+发送消息,用的是ActiveMQ。由于这方面网上的例子不是很多,而且有的也不完整。于是经过几天的摸索学习,在网上找到了合适的方案。
我的 IT技术资源库 http://itlib.tk/
ProducerTool.java用于发送消息:
java 代码
- package homework;
- 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 ProducerTool {
- private String user = ActiveMQConnection.DEFAULT_USER;
- private String password = ActiveMQConnection.DEFAULT_PASSWORD;
- private String url = ActiveMQConnection.DEFAULT_BROKER_URL;
- private String subject = "TOOL.DEFAULT";
- private Destination destination = null;
- private Connection connection = null;
- private Session session = null;
- private MessageProducer producer = null;
- // 初始化
- private void initialize() throws JMSException, Exception { ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(
- user, password, url); connection = connectionFactory.createConnection();
- session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); destination = session.createQueue(subject);
- producer = session.createProducer(destination); producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
- }
- // 发送消息 public void produceMessage(String message) throws JMSException, Exception {
- initialize(); TextMessage msg = session.createTextMessage(message);
- connection.start(); System.out.println("Producer:->Sending message: " + message);
- producer.send(msg); System.out.println("Producer:->Message sent complete!");
- }
- // 关闭连接 public void close() throws JMSException {
- System.out.println("Producer:->Closing connection"); if (producer != null)
- producer.close(); if (session != null)
- session.close(); if (connection != null)
- connection.close(); }
- }
ConsumerTool.java用于接受消息,我用的是基于消息监听的机制,需要实现MessageListener接口,这个接口有个onMessage方法,当接受到消息的时候会自动调用这个函数对消息进行处理。
java 代码
- package homework;
- import javax.jms.Connection; import javax.jms.Destination;
- import javax.jms.JMSException; import javax.jms.MessageConsumer;
- import javax.jms.Session; import javax.jms.MessageListener;
- import javax.jms.Message; import javax.jms.TextMessage;
- import org.apache.activemq.ActiveMQConnection;
- import org.apache.activemq.ActiveMQConnectionFactory;
- public class ConsumerTool implements MessageListener {
- private String user = ActiveMQConnection.DEFAULT_USER;
- private String password = ActiveMQConnection.DEFAULT_PASSWORD;
- private String url = ActiveMQConnection.DEFAULT_BROKER_URL;
- private String subject = "TOOL.DEFAULT";
- 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(); session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
- destination = session.createQueue(subject); consumer = session.createConsumer(destination);
- }
- // 消费消息
- public void consumeMessage() throws JMSException, Exception { initialize();
- connection.start();
- System.out.println("Consumer:->Begin listening..."); // 开始监听
- consumer.setMessageListener(this); // Message message = consumer.receive();
- }
- // 关闭连接 public void close() throws JMSException {
- System.out.println("Consumer:->Closing connection"); if (consumer != null)
- consumer.close(); if (session != null)
- session.close(); if (connection != null)
- connection.close(); }
- // 消息处理函数
- public void onMessage(Message message) { try {
- if (message instanceof TextMessage) { TextMessage txtMsg = (TextMessage) message;
- String msg = txtMsg.getText(); System.out.println("Consumer:->Received: " + msg);
- } else { System.out.println("Consumer:->Received: " + message);
- } } catch (JMSException e) {
- // TODO Auto-generated catch block e.printStackTrace();
- } }
- }
如果想主动的去接受消息,而不用消息监听的话,把consumer.setMessageListener(this)改为Message message = consumer.receive(),手动去调用MessageConsumer的receive方法即可。
下面是测试类Test.java:
java 代码
- package homework;
- import javax.jms.JMSException;
- public class Test {
- /** * @param args
- */ public static void main(String[] args) throws JMSException, Exception {
- // TODO Auto-generated method stub ConsumerTool consumer = new ConsumerTool();
- ProducerTool producer = new ProducerTool(); // 开始监听
- consumer.consumeMessage();
- // 延时500毫秒之后发送消息 Thread.sleep(500);
- producer.produceMessage("Hello, world!"); producer.close();
- // 延时500毫秒之后停止接受消息
- Thread.sleep(500); consumer.close();
- } }
ActiveMQ的一个简单实例-ActiveMQ接收+发送消息
IT技术资源库 http://itlib.tk/