生产者 public class Producer { public static void main(String[] args) throws JMSException { ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("tcp://localhost:61616"); Connection connection = factory.createConnection(); connection.start(); Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); ActiveMQTopic topic= new ActiveMQTopic("testTopic"); MessageProducer producer = session.createProducer(topic); producer.setDeliveryMode(DeliveryMode.PERSISTENT); for(int i=0; i<10; i++){ TextMessage message = session.createTextMessage(); message.setText("message_" + System.currentTimeMillis()); producer.send(message); System.out.println("Sent message: " + message.getText()); } // session.close(); // connection.stop(); // connection.close(); } } 发布消息的结果 Sent message: message_1341915173083 Sent message: message_1341915173085 Sent message: message_1341915173085 Sent message: message_1341915173086 Sent message: message_1341915173086 Sent message: message_1341915173086 Sent message: message_1341915173087 Sent message: message_1341915173087 Sent message: message_1341915173088 Sent message: message_1341915173088 消费者 public class Consumer { public static void main(String[] args) throws JMSException { ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("tcp://localhost:61616"); Connection connection = factory.createConnection(); connection.start(); Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); ActiveMQTopic topic= new ActiveMQTopic("testTopic"); // javax.jms.Topic topic = session.createTopic("myTopic.messages"); MessageConsumer consumer = session.createConsumer( topic); consumer.setMessageListener(new MessageListener() { public void onMessage(Message message) { TextMessage tm = (TextMessage) message; try { System.out.println("Received message: " + tm.getText()); } catch (JMSException e) { e.printStackTrace(); } } }); MessageConsumer comsumer2 = session.createConsumer(topic); comsumer2.setMessageListener(new MessageListener(){ public void onMessage(Message message) { TextMessage tm = (TextMessage) message; try { System.out.println("Received message: " + tm.getText()); } catch (JMSException e) { e.printStackTrace(); } } }); // session.close(); // connection.stop(); // connection.close(); } } 消费者运行程序后后获取不到生产者发布的消息,初识 ActiveMQ不太熟悉, 求解答