main.java

想学习EJB的同学

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package queueproducer;

import javax.annotation.Resource;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;

/**
 *
 * @author user
 */
public class Main {
    @Resource(mappedName="jms/qcf")
    private static QueueConnectionFactory qcf;
    @Resource(mappedName="jms/q")
    private static Queue q;
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        QueueConnection con = null;
        QueueSession ses = null;
        QueueSender sender = null;
        try{
            Context ctx = new InitialContext();
            //step 1. locate QueueConnectionFactory
           // QueueConnectionFactory qcf = (QueueConnectionFactory)
            //        ctx.lookup("jms/qcf");
            //step 2. create QueueConnection from the factory
            con = qcf.createQueueConnection();
            //step 3. create QueueSession from the connection
            ses = con.createQueueSession(false, QueueSession.AUTO_ACKNOWLEDGE);
            //step 4. locate Queue
            //Queue q = (Queue)ctx.lookup("jms/q");
            //step 5. create QueueSender
            sender = ses.createSender(q);
            //step 6. create Message from the session
            TextMessage tmsg = ses.createTextMessage();
            tmsg.setText("My first JMS Queue programming.");
            //step 7. send message
            sender.send(tmsg);
        }catch(Exception e){
            e.printStackTrace();
        }finally{
            if(sender != null) try{ sender.close(); }catch(Exception e){}
            if(ses != null) try{ ses.close(); }catch(Exception e){}
            if(con != null) try{ con.close(); }catch(Exception e){}
        }
    }

}