ActiveMQ基本使用

ActiveMQ消息模式主要是队列模式和主题模式。

队列模式

“`消费者
AppConsumer.java

package come.jms.queue;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.apache.activemq.ActiveMQConnectionFactory;
//队列模式
public class AppConsumer {
// 默认端口 61616
private static final String url = “tcp://127.0.0.1:61616”;
private static final String queueName = “queue-test”;

public static void main(String[] args) throws JMSException {
    // 1创建ConnectionFactory
    ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url);
    // 2创建 connection
    Connection connection = connectionFactory.createConnection();
    // 3启动连接
    connection.start();
    // 4创建会话
    Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

    // 5创建目标
    Destination destination = session.createQueue(queueName);

    // 创建 消费者
    MessageConsumer messageConsumer = session.createConsumer(destination);
    // 创建 监听者
    messageConsumer.setMessageListener(new MessageListener() {

        @Override
        public void onMessage(Message message) {
            // TODO Auto-generated method stub
            TextMessage textMessage = (TextMessage) message;
            try {
                System.out.println("接受的消息：" + textMessage.getText());
            } catch (JMSException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    });

    // 关闭连接  注意 连接 需要在异步完成后在关闭
    //connection.close();
}

}

> ``` 队列生产者
> AppProducer.java
> 
> package come.jms.queue;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ActiveMQConnectionFactory;
//队列模式
public class AppProducer {
    // 默认端口 61616
    private static final String url = "tcp://127.0.0.1:61616";
    private static final String queueName = "queue-test";
    public static void main(String[] args) throws JMSException {
        // 1创建ConnectionFactory
        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url);
        // 2创建 connection
        Connection connection = connectionFactory.createConnection();
        // 3启动连接
        connection.start();
        // 4创建会话
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        // 5创建目标
        Destination destination = session.createQueue(queueName);
        // 6 创建生产者
        MessageProducer messageProducer = session.createProducer(destination);
        for (int i = 0; i < 50; i++) {
            // 创建消息
            TextMessage textMessage = session.createTextMessage("message:" + i);
            // 发送消息
            messageProducer.send(textMessage);
            System.err.println(textMessage);
        }
        System.err.println("over");
        // 关闭连接
        connection.close();
    }
}

**主题（topic）模式**

package come.jms.topic;

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

import org.apache.activemq.ActiveMQConnectionFactory;
//主题模式
public class AppConsumer {
// 默认端口 61616
private static final String url = “tcp://127.0.0.1:61616”;
private static final String topicName = “topic-test”;

public static void main(String[] args) throws JMSException {
    // 1创建ConnectionFactory
    ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url);
    // 2创建 connection
    Connection connection = connectionFactory.createConnection();
    // 3启动连接
    connection.start();
    // 4创建会话
    Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

    // 5创建目标
    Destination destination = session.createTopic(topicName);

    // 创建 消费者
    MessageConsumer messageConsumer = session.createConsumer(destination);
    // 创建 监听者
    messageConsumer.setMessageListener(new MessageListener() {

        @Override
        public void onMessage(Message message) {
            // TODO Auto-generated method stub
            TextMessage textMessage = (TextMessage) message;
            try {
                System.out.println("接受的消息：" + textMessage.getText());
            } catch (JMSException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    });

    // 关闭连接  注意 连接 需要在异步完成后在关闭
    //connection.close();
}

}

package come.jms.topic;

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

import org.apache.activemq.ActiveMQConnectionFactory;
//主题模式
public class AppConsumer {
// 默认端口 61616
private static final String url = “tcp://127.0.0.1:61616”;
private static final String topicName = “topic-test”;

public static void main(String[] args) throws JMSException {
    // 1创建ConnectionFactory
    ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url);
    // 2创建 connection
    Connection connection = connectionFactory.createConnection();
    // 3启动连接
    connection.start();
    // 4创建会话
    Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

    // 5创建目标
    Destination destination = session.createTopic(topicName);

    // 创建 消费者
    MessageConsumer messageConsumer = session.createConsumer(destination);
    // 创建 监听者
    messageConsumer.setMessageListener(new MessageListener() {

        @Override
        public void onMessage(Message message) {
            // TODO Auto-generated method stub
            TextMessage textMessage = (TextMessage) message;
            try {
                System.out.println("接受的消息：" + textMessage.getText());
            } catch (JMSException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    });

    // 关闭连接  注意 连接 需要在异步完成后在关闭
    //connection.close();
}

}

AppProducer.java

package come.jms.topic;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.apache.activemq.ActiveMQConnectionFactory;

// 主题模式 只能接受监听后发布的消息
public class AppProducer {
//默认端口 61616
private static final String url = “tcp://127.0.0.1:61616”;
private static final String topicName = “topic-test”;

public static void main(String[] args) throws JMSException {
    // 1创建ConnectionFactory
    ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url);
    // 2创建 connection
    Connection connection = connectionFactory.createConnection();
    // 3启动连接
    connection.start();
    // 4创建会话
    Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

    //5创建目标
    Destination destination=session.createTopic(topicName);

    //6 创建生产者
    MessageProducer messageProducer=session.createProducer(destination);

    for (int i = 0; i < 50; i++) {
        // 创建消息
        TextMessage textMessage=session.createTextMessage("message:"+i);
        // 发送消息
        messageProducer.send(textMessage);
        System.err.println(textMessage);
    }
    System.err.println("over");
    // 关闭连接 
    connection.close();
}

}
“`