• Apache ActiveMQ P2P模式实时请求-响应


    目标:使用开源JMS应用框架Apache ActiveMQ,实现P2P方式下Request-Response Socket通信

    模式:P2P

    特征:发送端可以实时发送请求并取得响应,接收端可以实时获取请求并返回响应

    库:activemq-all-5.11.1.jar

    前提:启动activemq消息服务程序

    --------------------------------------------------------------------------------------------

    发送端:

    package merrick.activemq;

    import java.util.UUID;

    import javax.jms.Connection;
    import javax.jms.ConnectionFactory;
    import javax.jms.DeliveryMode;
    import javax.jms.Destination;
    import javax.jms.JMSException;
    import javax.jms.Message;
    import javax.jms.MessageConsumer;
    import javax.jms.MessageListener;
    import javax.jms.MessageProducer;
    import javax.jms.Queue;
    import javax.jms.Session;
    import javax.jms.TextMessage;

    import org.apache.activemq.ActiveMQConnection;
    import org.apache.activemq.ActiveMQConnectionFactory;

    public class Sender_p2p {
     
     private static String user = ActiveMQConnection.DEFAULT_USER; 
        private static String password =ActiveMQConnection.DEFAULT_PASSWORD; 
        private static String url =  "tcp://localhost:61616";  
       
        public static final String LONGMSG = "123456789012345678901234567890123456789012345678901234567890";

     public static void main(String[] args) {  

      try {
       
       new Sender_p2p().send(UUID.randomUUID().toString()+LONGMSG);
       
       
      } catch (Throwable e) {
       
       e.printStackTrace();
      }
      

     }
     
     /***
      * P2P模式
      * Request-Response
      * 类似:发送请求同步获取响应
      * 此处可应用为TCP SOCKET Client端
      *
      * */ 
     public  void send(String msg) throws Exception {

          ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(user,password,url);
          Connection connection = connectionFactory.createConnection(); 
          connection.start();       
          Session session = connection.createSession(Boolean.TRUE,Session.AUTO_ACKNOWLEDGE); 
          Queue  destination = session.createQueue("Request&Response_X"); 
          MessageProducer producer = session.createProducer(destination);       
          producer.setDeliveryMode(DeliveryMode.PERSISTENT);  
          TextMessage message = session.createTextMessage(msg);
     
         
          Destination tempDest = session.createTemporaryQueue(); 
          MessageConsumer responseConsumer = session.createConsumer(tempDest); 
          message.setJMSReplyTo(tempDest); 
          String correlationId = UUID.randomUUID().toString();      
          message.setJMSCorrelationID(correlationId);  //
          responseConsumer.setMessageListener(new MessageListener() {//监听回应
      @Override
      public void onMessage(Message arg0) {   
       try {
        TextMessage textMessage=(TextMessage)arg0; 
        System.out.println(textMessage.getText()); //显示接收者的Response
       } catch (JMSException e) {    
        e.printStackTrace();
       } finally {//得到回应后关闭会话和连接
                    try {
          session.commit();
          session.close();
          connection.close();
         } catch (JMSException e) {

          e.printStackTrace();
         }
       }
       
      }});
         
          producer.send(message); //发送消息     
        
          System.out.println("<"+Thread.currentThread().getId() + "> send ok: "+msg);
          session.commit(); 
     }

    }

    --------------------------------------------------------------------------------------------

    接收端:

    package merrick.activemq;

    import java.util.UUID;

    import javax.jms.Connection;
    import javax.jms.ConnectionFactory;
    import javax.jms.DeliveryMode;
    import javax.jms.JMSException;
    import javax.jms.Message;
    import javax.jms.MessageConsumer;
    import javax.jms.MessageListener;
    import javax.jms.MessageProducer;
    import javax.jms.Queue;
    import javax.jms.Session;
    import javax.jms.TextMessage;

    import org.apache.activemq.ActiveMQConnection;
    import org.apache.activemq.ActiveMQConnectionFactory;

    public class Receiver_p2p {
     
     
     private static String user = ActiveMQConnection.DEFAULT_USER; 
        private static String password =ActiveMQConnection.DEFAULT_PASSWORD; 
        private static String url = "tcp://localhost:61616"; 
       
       

     public static void main(String[] args) {
      
      try {
       Receiver_p2p obj = new Receiver_p2p();
       obj.receive();
       
      } catch (Exception e) {

       e.printStackTrace();
      }
     }
     
     /***
      * P2P模式
      * Request-Response
      * 类似:获取即时内容,同步返回响应
      * (但Session不能关闭)
      * 此处可应用为TCP SOCKET Server端
      * */ 
     public void receive() throws Exception{
      ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(user,password,url); 
      Connection connection = connectionFactory.createConnection(); 
      connection.start(); 
      Session session = connection.createSession(Boolean.TRUE,Session.AUTO_ACKNOWLEDGE);
      
      Queue  destination = session.createQueue("Request&Response_X");
      MessageConsumer consumer = session.createConsumer(destination);
      consumer.setMessageListener(new MessageListener() {
       
       @Override
       public void onMessage(Message message) {  //监听消息  
        
                    try {
                     TextMessage textMessage=(TextMessage)message; 
         System.out.println("[Received]"+textMessage.getText()); //取得消息
         
         
         Message response = session.createTextMessage(UUID.randomUUID().toString() + " [from receiver] "+ textMessage.getText().length()+", " + textMessage.getText());//及时给予Response
         response.setJMSCorrelationID(message.getJMSCorrelationID());     
         MessageProducer producer = session.createProducer(null); 
         producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
         producer.send(message.getJMSReplyTo(),response);  //发送回应             
         
        } catch (JMSException e) {

         e.printStackTrace();
        } finally {
                     try {
          session.commit();
          session.close();
          connection.close();
         } catch (JMSException e) {
     
          e.printStackTrace();
         }
        }
                   
        
       }
      });
      
      
      
      
     }

    }

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  • 原文地址:https://www.cnblogs.com/m160331/p/12142346.html
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