//创建Topic的会话,用于接收信息
TopicSession topicSession =
topicConnection.createTopicSession(
false,
Session.AUTO_ACKNOWLEDGE);
//lookup topic1
Topic topic = (Topic) context.lookup("topic1");
//创建Topic subscriber
TopicSubscriber topicSubscriber =
topicSession.createSubscriber(topic);
//收满10条订阅消息则退出
for (int i=0; i<10; i++) {
//同步消息接收,使用receive方法,堵塞等待,直到接收消息
TextMessage message = (TextMessage) topicSubscriber.receive();
System.out.println("接收订阅消息["+i+"]: " + message.getText());
}
//资源清除,代码略 ... ...
System.out.println("订阅接收结束.");
} catch (NamingException e) {
e.printStackTrace();
} catch (JMSException e) {
e.printStackTrace();
}
}
}
非同步接收:
package javayou.demo.openjms;
import java.util.*;
import javax.jms.*;
import javax.naming.*;
public class TopicSubscribeAsynchronous implements MessageListener {
private TopicConnection topicConnection;
private TopicSession topicSession;
private Topic topic;
private TopicSubscriber topicSubscriber;
TopicSubscribeAsynchronous() {
try {
//取得JNDI上下文和连接
Hashtable properties = new Hashtable();
properties.put(
Context.INITIAL_CONTEXT_FACTORY,
"org.exolab.jms.jndi.InitialContextFactory");
properties.put(Context.PROVIDER_URL, "rmi://localhost:1099/");
Context context = new InitialContext(properties);
//取得Topic的连接工厂和连接
TopicConnectionFactory topicConnectionFactory =
(TopicConnectionFactory) context.lookup(
"JmsTopicConnectionFactory");
topicConnection = topicConnectionFactory.createTopicConnection();