如何设置JMS的超时

xharry 2008-09-05 05:36:17

请问我用如下的方式向ActiveMQ发送消息，当ActiveMQ服务器宕机时候，下面的代码中的两处（我已经标注）将会阻塞住，而我的主程序中还要干别的事情，不能因为JMS消息发不出去就阻塞了，所以请问各位，有什么方法让它不阻塞，或者设置一个超时时间，时间到了，就退出。再或者，让它抛出一个异常也可以。

我搜了很久没有找到解决方法：（



import javax.jms.Connection;

import javax.jms.DeliveryMode;

import javax.jms.JMSException;

import javax.jms.MessageProducer;

import javax.jms.Session;

import javax.jms.*;



import org.apache.activemq.ActiveMQConnectionFactory;



public class MyJMSSender {

	private Connection connection = null;

	private Session session = null;

	private MessageProducer producer = null;



	private void initialize() throws JMSException, Exception {

		ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(

				Config.user, Config.password, Config.url);

                // 这里会阻塞住，如果服务器宕了

		connection = connectionFactory.createConnection();

		session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

		Topic topic = session.createTopic(Config.topic);

		producer = session.createProducer(topic);

		producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);

	}



	public void produceMessage(String message) throws JMSException, Exception {

		// initialize();

		TextMessage msg = session.createTextMessage(message);



		connection.start();

		System.out.println("Producer:->Sending message: " + message);

                

                // 这里会阻塞住，如果服务器宕了

		producer.send(msg);

		System.out.println("Producer:->Message sent complete!");

	}



	public void close() throws JMSException {

		System.out.println("Producer:->Closing connection");

		if (producer != null)

			producer.close();

		if (session != null)

			session.close();

		if (connection != null)

			connection.close();

	}

}