ACTIVEMQ Combat (ii)-code example

The directory after ACTIVEMQ is extracted as follows:

Each directory is described as follows: Bin:activemq's startup script conf:activemq all profile data: Log file and persistent message DOCS:ACTIVEMQ official documentation EXAMPLES:ACTIVEMQ the official demo LIB:ACTIVEMQ Run the required library WEBAPPS:ACTIVEMQ Web console WEBAPPS-DEMO:ACTIVEMQ WebApps related demo ACTIVEMQ-ALL-5.13.2.JAR:ACTIVEMQ CLI jar Package for user system calls

Among them, examples is the official samples provided by ACTIVEMQ, and beginners can familiarize themselves with the use of ACTIVEMQ by studying these samples.

This article will implement a simple publish-subscribe example through ACTIVEMQ.

1, Producer

Package COM.RICKY.CODELAB.ACTIVEMQ.AMQP;
Import java.io.IOException;
Import java.util.Properties;
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.qpid.jms.JmsConnectionFactory;

Import Com.ricky.codelab.activemq.util.PropertyUtils;

    public class Producerdemo {private int messages = 10000;
        public static void Main (string[] args) {try {new Producerdemo (). publish ();
        } catch (JMSException e) {e.printstacktrace ();
        } catch (IOException e) {e.printstacktrace (); }} public void Publish () throws JMSException, ioexception{Properties props = propertyutils.load ("Activ

        Emq.properties ");

        String type = Props.getproperty ("Activemq.type", "topic:event"); String user = Props.getproperty ("Activemq.username", "admin ");
        String Password = props.getproperty ("Activemq.password", "password");

        String Server = Props.getproperty ("Activemq.server", "localhost:5672");

        String Connectionuri = "amqp://" + server;

        Jmsconnectionfactory factory = new Jmsconnectionfactory (Connectionuri);
        Connection Connection = factory.createconnection (user, password);

        Connection.start ();

        Session session = Connection.createsession (false, Session.auto_acknowledge);
        string[] arr = Type.split (":");
        Destination Destination = null;
        if (arr[0].equals ("topic")) {destination = Session.createtopic (Type.split (":") [1]);
        } else {destination = Session.createqueue (Type.split (":") [1]);
        } messageproducer producer = Session.createproducer (destination);

        Producer.setdeliverymode (deliverymode.non_persistent); for (int i = 1; i <= messages; i++) {TextMessage msg = Session.createtExtmessage ("#:" + i);
            Msg.setintproperty ("id", i);
            Producer.send (msg);
            if ((i) = = 0) {System.out.println (String.Format ("Sent%d messages", i));
        }} producer.send (Session.createtextmessage ("SHUTDOWN"));
        try {thread.sleep (1000 * 3);
        } catch (Interruptedexception e) {e.printstacktrace ();
    } connection.close ();
 }
}

2, Consumer

Package COM.RICKY.CODELAB.ACTIVEMQ.AMQP;
Import java.io.IOException;
Import java.util.Properties;
Import javax.jms.Connection;
Import javax.jms.Destination;
Import javax.jms.JMSException;
Import Javax.jms.Message;
Import Javax.jms.MessageConsumer;
Import javax.jms.Session;
Import Javax.jms.TextMessage;
Import Org.apache.qpid.jms.JmsConnectionFactory;

Import Com.ricky.codelab.activemq.util.PropertyUtils; public class Consumerdemo {public static void main (string[] args) {try {new Consumerdemo (). su
        Bscribe ();
        } catch (IOException e) {e.printstacktrace ();
        } catch (JMSException e) {e.printstacktrace (); }} public void Subscribe () throws IOException, jmsexception{Properties props = propertyutils.load ("act

        Ivemq.properties ");

        String type = Props.getproperty ("Activemq.type", "topic:event");
        String user = Props.getproperty ("Activemq.username", "admin"); String Password = PRops.getproperty ("Activemq.password", "password");

        String Server = Props.getproperty ("Activemq.server", "localhost:5672");

        String Connectionuri = "amqp://" + server;

        Jmsconnectionfactory factory = new Jmsconnectionfactory (Connectionuri);
        Connection Connection = factory.createconnection (user, password);
        Connection.start ();

        Session session = Connection.createsession (false, Session.auto_acknowledge);

        string[] arr = Type.split (":");
        Destination Destination = null;
        if (arr[0].equals ("topic")) {destination = Session.createtopic (arr[1]);
        } else {destination = Session.createqueue (arr[1]);
        } Messageconsumer consumer = session.createconsumer (destination);
        Long start = System.currenttimemillis ();
        Long Count = 1;
        System.out.println ("Waiting for Messages ...");
            while (true) {Message msg = consumer.receive (); if (msg INstanceof textmessage) {String BODY = ((textmessage) msg). GetText ();
                    if ("SHUTDOWN". Equals (body)) {Long diff = system.currenttimemillis ()-Start;
                    System.out.println (String.Format ("Received%d in%.2f seconds", Count, (1.0 * diff/1000.0)));
                    Connection.close ();
                    try {thread.sleep (10);
                } catch (Exception e) {} system.exit (1);
                            } else {try {if (count! = Msg.getintproperty ("id")) {
                        System.out.println ("mismatch:" + count + "! =" + msg.getintproperty ("id")); }} catch (NumberFormatException ignore) {} if (count = = 1)
                    {start = System.currenttimemillis ();
              } else if (count% 1000 = = 0) {          System.out.println (String.Format ("Received%d messages.", count));
                } count++;
            }} else {System.out.println ("unexpected message type:" + msg.getclass ());
 }
        }
    }
}

Click here to download the complete code.

Resources:
Https://activemq.apache.org/initial-configuration.html
Http://activemq.apache.org/examples.html