JMS的一个简单同步实现

Sender类，主要用来发送JMS消息

import java.io.OutputStreamWriter;

import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

import org.apache.log4j.ConsoleAppender;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;

public class JMSSender {
    private static final Logger log = Logger.getLogger(JMSSender.class);
    
    private static QueueConnectionFactory factory = null;
    
    private static String requestMessage = "Hello, JMS!";
    
    public static void main(String[] args){
        String initialContextFactory = "com.tibco.tibjms.naming.TibjmsInitialContextFactory";
        String providerURL = "tibjmsnaming://gftsint.nam.nsroot.net:7222";
        String queueConnectionFactory = "tech.na.cars.QueueCF";
        String requestQueue = "tech.na.cars.vcs2.web.RequestQueue";
        
        ConsoleAppender appender = new ConsoleAppender();
        appender.setWriter(new OutputStreamWriter(System.out));
        appender.setLayout(new PatternLayout("%-5p [%t]: %m%n"));
        log.addAppender(appender);
        
        int emsMessageTimeout = 60 * 1000 * 60 * 24;
        
        try {
            Context context = new InitialContext();
            context.addToEnvironment(Context.INITIAL_CONTEXT_FACTORY, initialContextFactory);
            context.addToEnvironment(Context.PROVIDER_URL, providerURL);
            factory = (QueueConnectionFactory) context.lookup(queueConnectionFactory);
            QueueConnection requestConnection = factory.createQueueConnection();
            Session requestSession = requestConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
            Destination destination = (Queue) context.lookup(requestQueue);
            
            log.info("Create message producer....");
            MessageProducer producer = requestSession.createProducer(destination);
            producer.setDeliveryMode(DeliveryMode.PERSISTENT);
            producer.setTimeToLive(emsMessageTimeout);
            
            log.info("Creating message....");
            TextMessage message = requestSession.createTextMessage(requestMessage);
            
            log.info("Sending message....");
            producer.send(message);
        } catch (NamingException e) {
            log.error("Exception", e);
        } catch (JMSException e) {
            log.error("Exception", e);
        }
    }
}

 

接下来是receiver类，用来接收发送的消息:

import java.io.OutputStreamWriter;

import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

import org.apache.log4j.ConsoleAppender;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;

public class JMSReceiver {
    private static final Logger log = Logger.getLogger(JMSReceiver.class);
    
    private static QueueConnectionFactory factory = null;
    
    public static void main(String[] args){
        String initialContextFactory = "com.tibco.tibjms.naming.TibjmsInitialContextFactory";
        String providerURL = "tibjmsnaming://gftsint.nam.nsroot.net:7222";
        String queueConnectionFactory = "tech.na.cars.QueueCF";
        String responseQueue = "tech.na.cars.vcs2.web.RequestQueue";
        
        ConsoleAppender appender = new ConsoleAppender();
        appender.setWriter(new OutputStreamWriter(System.out));
        appender.setLayout(new PatternLayout("%-5p [%t]: %m%n"));
        log.addAppender(appender);
        
        try {
            Context responseContext = new InitialContext();
            responseContext.addToEnvironment(Context.INITIAL_CONTEXT_FACTORY, initialContextFactory);
            responseContext.addToEnvironment(Context.PROVIDER_URL, providerURL);
            factory = (QueueConnectionFactory) responseContext.lookup(queueConnectionFactory);
            QueueConnection responseConnection = factory.createQueueConnection();
            Session responseSession = responseConnection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
            Destination responseDestination = (Queue) responseContext.lookup(responseQueue);
            
            log.info("Create message consumer....");
            MessageConsumer consumer = responseSession.createConsumer(responseDestination);
            responseConnection.start();
            log.info("Receive message....");
            Message message = null;
            while(message == null){
                message = consumer.receive();
            }
            
            String stringMessage = ((TextMessage) message).getText();
            log.info("The response message content is " + stringMessage);
        } catch (NamingException e) {
            log.error("Exception", e);
        } catch (JMSException e) {
            log.error("Exception", e);
        }
    }
}

 手工编写代码的缺陷是每个类都得定义factory和URL等东西，不利于管理