ActiveMQ_主題訂閱模式/持久化Topic

依賴包，最好跟你安裝的ActiveMQ版本相同

<dependency>
    <groupId>org.apache.activemq</groupId>
    <artifactId>activemq-all</artifactId>
    <version>5.15.10</version>
</dependency>

生產者代碼

import org.apache.activemq.ActiveMQConnectionFactory;

import javax.jms.*;

public class JMSProducerPersistent {

    private final static String DEFAULT_BROKER_HOST = "tcp://192.168.253.132:61616";
    private final static String USER_NAME = "admin";
    private final static String PASSWORD = "admin";
    private final static String TOPIC_NAME = "topic_one";

    public static void main(String[] args) throws JMSException {

        // 創建鏈接工廠
        ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory(USER_NAME, PASSWORD, DEFAULT_BROKER_HOST);
        // 通過鏈接工廠獲得connection並啓動
        Connection connection = activeMQConnectionFactory.createConnection();
        //創建會話session
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        //創建目的地，是隊列還是主題
        Topic topic = session.createTopic(TOPIC_NAME);
        // 創建生產者
        MessageProducer producer = session.createProducer(topic);
        // 設置持久化
        producer.setDeliveryMode(DeliveryMode.PERSISTENT);
        // 啓動鏈接
        connection.start();
        //循環發送5條消息
        for (int i = 0; i < 5; i++) {
            //創建消息
            TextMessage textMessage = session.createTextMessage("Hello ActiveMQ" + i);
            // 發送消息
            producer.send(textMessage);
        }

        // 關閉鏈接
        producer.close();
        session.close();
        connection.close();

    }
}

消費者代碼

import org.apache.activemq.ActiveMQConnectionFactory;

import javax.jms.*;
import java.io.IOException;

public class JMSConsumerPersistent {
    private final static String DEFAULT_BROKER_HOST = "tcp://192.168.253.132:61616";
    private final static String USER_NAME = "admin";
    private final static String PASSWORD = "admin";
    private final static String TOPIC_NAME = "topic_one";


    public static void main(String[] args) throws JMSException, IOException {
        System.out.println("subscriberOne");
        // 創建鏈接工廠
        ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory(USER_NAME, PASSWORD, DEFAULT_BROKER_HOST);
        // 通過鏈接工廠獲得connection
        Connection connection = activeMQConnectionFactory.createConnection();
        connection.setClientID("subscriberOne");
        //創建會話session
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        //創建目的地，是隊列還是主題
        Topic topic = session.createTopic(TOPIC_NAME);
        //創建主題訂閱者
        TopicSubscriber durableSubscriber = session.createDurableSubscriber(topic, "hello");
        // 啓動鏈接
        connection.start();

        durableSubscriber.setMessageListener(message -> {
            if (message instanceof TextMessage) {
                TextMessage receive = (TextMessage) message;
                try {
                    System.out.println("receive.getText() --> " + receive.getText());
                } catch (JMSException e) {
                    e.printStackTrace();
                }
            }
        });
        System.in.read();

        //關閉鏈接
        session.close();
        connection.close();
    }
}