JMS五种消息的发送/接收的例子

1、消息发送

Java代码  

1. //连接工厂   
2. ConnectionFactory connFactory = new ActiveMQConnectionFactory(   
3.         ActiveMQConnection.DEFAULT_USER,   
4.         ActiveMQConnection.DEFAULT_PASSWORD,   
5.         "tcp://localhost:61616");   
6.   
7. //连接到JMS提供者   
8. Connection conn = connFactory.createConnection();   
9. conn.start();   
10.   
11. //事务性会话，自动确认消息   
12. Session session = conn.createSession(true, Session.AUTO_ACKNOWLEDGE);   
13.   
14. //消息的目的地   
15. Destination destination = session.createQueue("queue.hello");   
16.   
17. //消息生产者   
18. MessageProducer producer = session.createProducer(destination);   
19. producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT); //不持久化  
20.   
21.   
22. //文本消息   
23. TextMessage textMessage = session.createTextMessage("文本消息");   
24. producer.send(textMessage);   
25.   
26. //键值对消息   
27. MapMessage mapMessage = session.createMapMessage();   
28. mapMessage.setLong("age", new Long(32));   
29. mapMessage.setDouble("sarray", new Double(5867.15));   
30. mapMessage.setString("username", "键值对消息");   
31. producer.send(mapMessage);   
32.   
33. //流消息   
34. StreamMessage streamMessage = session.createStreamMessage();   
35. streamMessage.writeString("streamMessage流消息");   
36. streamMessage.writeLong(55);   
37. producer.send(streamMessage);   
38.   
39. //字节消息   
40. String s = "BytesMessage字节消息";   
41. BytesMessage bytesMessage = session.createBytesMessage();   
42. bytesMessage.writeBytes(s.getBytes());   
43. producer.send(bytesMessage);   
44.   
45. //对象消息   
46. User user = new User("cjm", "对象消息"); //User对象必须实现Serializable接口  
47. ObjectMessage objectMessage = session.createObjectMessage();   
48. objectMessage.setObject(user);   
49. producer.send(objectMessage);   
50.   
51.   
52. session.commit(); //在事务性会话中，只有commit之后，消息才会真正到达目的地  
53. producer.close();   
54. session.close();   
55. conn.close();  

//连接工厂ConnectionFactory connFactory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER,ActiveMQConnection.DEFAULT_PASSWORD,"tcp://localhost:61616");//连接到JMS提供者Connection conn = connFactory.createConnection();conn.start();//事务性会话，自动确认消息Session session = conn.createSession(true, Session.AUTO_ACKNOWLEDGE);//消息的目的地Destination destination = session.createQueue("queue.hello");//消息生产者MessageProducer producer = session.createProducer(destination);producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT); //不持久化//文本消息TextMessage textMessage = session.createTextMessage("文本消息");producer.send(textMessage);//键值对消息MapMessage mapMessage = session.createMapMessage();mapMessage.setLong("age", new Long(32));mapMessage.setDouble("sarray", new Double(5867.15));mapMessage.setString("username", "键值对消息");producer.send(mapMessage);//流消息StreamMessage streamMessage = session.createStreamMessage();streamMessage.writeString("streamMessage流消息");streamMessage.writeLong(55);producer.send(streamMessage);//字节消息String s = "BytesMessage字节消息";BytesMessage bytesMessage = session.createBytesMessage();bytesMessage.writeBytes(s.getBytes());producer.send(bytesMessage);//对象消息User user = new User("cjm", "对象消息"); //User对象必须实现Serializable接口ObjectMessage objectMessage = session.createObjectMessage();objectMessage.setObject(user);producer.send(objectMessage);session.commit(); //在事务性会话中，只有commit之后，消息才会真正到达目的地producer.close();session.close();conn.close();

 

2、消息接收：通过消息监听器的方式接收消息

Java代码  

1. public class Receiver implements MessageListener{   
2.     private boolean stop = false;   
3.        
4.     public void execute() throws Exception {   
5.         //连接工厂   
6.         ConnectionFactory connFactory = new ActiveMQConnectionFactory(   
7.                 ActiveMQConnection.DEFAULT_USER,   
8.                 ActiveMQConnection.DEFAULT_PASSWORD,   
9.                 "tcp://localhost:61616");   
10.            
11.         //连接到JMS提供者   
12.         Connection conn = connFactory.createConnection();   
13.         conn.start();   
14.            
15.         //事务性会话，自动确认消息   
16.         Session session = conn.createSession(true, Session.AUTO_ACKNOWLEDGE);   
17.            
18.         //消息的来源地   
19.         Destination destination = session.createQueue("queue.hello");   
20.            
21.         //消息消费者   
22.         MessageConsumer consumer = session.createConsumer(destination);   
23.         consumer.setMessageListener(this);   
24.            
25.         //等待接收消息   
26.         while(!stop){   
27.             Thread.sleep(5000);   
28.         }   
29.            
30.         session.commit();   
31.            
32.         consumer.close();   
33.         session.close();   
34.         conn.close();   
35.     }   
36.   
37.     public void onMessage(Message m) {   
38.         try{   
39.             if(m instanceof TextMessage){ //接收文本消息  
40.                 TextMessage message = (TextMessage)m;   
41.                 System.out.println(message.getText());   
42.             }else if(m instanceof MapMessage){ //接收键值对消息  
43.                 MapMessage message = (MapMessage)m;   
44.                 System.out.println(message.getLong("age"));   
45.                 System.out.println(message.getDouble("sarray"));   
46.                 System.out.println(message.getString("username"));   
47.             }else if(m instanceof StreamMessage){ //接收流消息  
48.                 StreamMessage message = (StreamMessage)m;   
49.                 System.out.println(message.readString());   
50.                 System.out.println(message.readLong());   
51.             }else if(m instanceof BytesMessage){ //接收字节消息  
52.                 byte[] b = new byte[1024];   
53.                 int len = -1;   
54.                 BytesMessage message = (BytesMessage)m;   
55.                 while((len=message.readBytes(b))!=-1){   
56.                     System.out.println(new String(b, 0, len));   
57.                 }   
58.             }else if(m instanceof ObjectMessage){ //接收对象消息  
59.                 ObjectMessage message = (ObjectMessage)m;   
60.                 User user = (User)message.getObject();   
61.                 System.out.println(user.getUsername() + " _ " + user.getPassword());   
62.             }else{   
63.                 System.out.println(m);   
64.             }   
65.                
66.             stop = true;   
67.         }catch(JMSException e){   
68.             stop = true;   
69.             e.printStackTrace();   
70.         }   
71.     }   
72. }  

public class Receiver implements MessageListener{private boolean stop = false;public void execute() throws Exception {//连接工厂ConnectionFactory connFactory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER,ActiveMQConnection.DEFAULT_PASSWORD,"tcp://localhost:61616");//连接到JMS提供者Connection conn = connFactory.createConnection();conn.start();//事务性会话，自动确认消息Session session = conn.createSession(true, Session.AUTO_ACKNOWLEDGE);//消息的来源地Destination destination = session.createQueue("queue.hello");//消息消费者MessageConsumer consumer = session.createConsumer(destination);consumer.setMessageListener(this);//等待接收消息while(!stop){Thread.sleep(5000);}session.commit();consumer.close();session.close();conn.close();}public void onMessage(Message m) {try{if(m instanceof TextMessage){ //接收文本消息TextMessage message = (TextMessage)m;System.out.println(message.getText());}else if(m instanceof MapMessage){ //接收键值对消息MapMessage message = (MapMessage)m;System.out.println(message.getLong("age"));System.out.println(message.getDouble("sarray"));System.out.println(message.getString("username"));}else if(m instanceof StreamMessage){ //接收流消息StreamMessage message = (StreamMessage)m;System.out.println(message.readString());System.out.println(message.readLong());}else if(m instanceof BytesMessage){ //接收字节消息byte[] b = new byte[1024];int len = -1;BytesMessage message = (BytesMessage)m;while((len=message.readBytes(b))!=-1){System.out.println(new String(b, 0, len));}}else if(m instanceof ObjectMessage){ //接收对象消息ObjectMessage message = (ObjectMessage)m;User user = (User)message.getObject();System.out.println(user.getUsername() + " _ " + user.getPassword());}else{System.out.println(m);}stop = true;}catch(JMSException e){stop = true;e.printStackTrace();}}}