这是我的代码:
import javax.naming.InitialContext;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.QueueSender;
import javax.jms.DeliveryMode;
import javax.jms.QueueSession;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
public class Sender
{
public static void main(String[] args) throws Exception
{
// get the initial context
InitialContext ctx = new InitialContext();
// lookup the queue object
Queue queue = (Queue) ctx.lookup("queue/queue0");
// lookup the queue connection factory
QueueConnectionFactory connFactory = (QueueConnectionFactory) ctx.
lookup("queue/connectionFactory");
// create a queue connection
QueueConnection queueConn = connFactory.createQueueConnection();
// create a queue session
QueueSession queueSession = queueConn.createQueueSession(false,Session.DUPS_OK_ACKNOWLEDGE);
// create a queue sender
QueueSender queueSender = queueSession.createSender(queue);
queueSender.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
// create a simple message to say "Hello"
TextMessage message = queueSession.createTextMessage("Hello");
// send the message
queueSender.send(message);
// print what we did
System.out.println("sent: " + message.getText());
// close the queue connection
queueConn.close();
}
}
在上面的代码中,Eclipse没有报告任何错误 - 我能够成功编译。然而,当我尝试运行它时,我得到了以下异常:
Exception in thread "main" javax.naming.NoInitialContextException: Need to specify
class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.getURLOrDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.lookup(Unknown Source)
at Sender.main(Sender.java:21)
有人能帮我修复这个bug吗?我已经尝试修复几个小时了,但还是无法解决。