ActiveMQ HelloWorld

最新推荐文章于 2020-07-11 23:20:23 发布

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本文介绍了如何使用ActiveMQ进行消息生产与消费的基本流程，包括创建连接、会话、目的地、生产者和发送消息的过程，以及消费者如何监听并处理接收到的消息。

生产者：

import javax.jms.Connection;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;

public class MyProducer {

	private String user = ActiveMQConnection.DEFAULT_USER;
	private String password = ActiveMQConnection.DEFAULT_PASSWORD;
	private String url = "tcp://localhost:61616";
	private String subject = "FUCKWORLD";
	private Destination destination;

	public void begin() {

		Connection connection = null;
		try {
			ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(
					user, password, url);
			connection = connectionFactory.createConnection();
			connection.start();

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

			MessageProducer producer = session.createProducer(destination);
			producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
			TextMessage message = session.createTextMessage("hello world");
			producer.send(message);
		} catch (Exception e) {
		}
	}
}

消费者：

import javax.jms.Connection;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;

public class MyConsumer implements MessageListener{

	private String user = ActiveMQConnection.DEFAULT_USER;
	private String password = ActiveMQConnection.DEFAULT_PASSWORD;
	private String url = "tcp://localhost:61616";
	private ActiveMQConnectionFactory connectionFactory;
	private Connection connection;
	private Session session;
	private Destination destination;
	private String subject = "FUCKWORLD";
	private MessageConsumer consumer = null;

	public MyConsumer() {

		try {
			connectionFactory = new ActiveMQConnectionFactory(user, password,
					url);
			connection = connectionFactory.createConnection();
			connection.start();
			session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
			destination = session.createTopic(subject);

			consumer = session.createConsumer(destination);
			consumer.setMessageListener(this);
		} catch (JMSException e) {
			e.printStackTrace();
		}
	}

	@Override
	public void onMessage(Message message) {
		TextMessage txtMsg = (TextMessage) message;
		try {
			System.out.println(txtMsg.getText());
		} catch (JMSException e) {
			e.printStackTrace();
		}		
	}
}

测试代码：

public class Mytest {

	public static void main(String[] args) {
		MyConsumer mc = new MyConsumer();
		MyProducer mp = new MyProducer();
		mp.begin();
	}

}