activemq 学习系列(四) 消息提供和消费

消息提供和消费

package com.test;

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

import org.apache.activemq.ActiveMQConnectionFactory;

public class ActiveMqTest {

    public static void main (String[] args) {
        producer();
        // consumer();
    }
    
    public static void producer () {
        try {
            String brokerURL = "tcp://localhost:61616";
            String user = "admin";
            String password = "admin";
            ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(user, password, brokerURL);
            
            Connection connection = factory.createConnection();
            connection.start();
            
            Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            Destination queue = session.createQueue("demoQueue");
            
            MessageProducer messageProducer = session.createProducer(queue);
            messageProducer.setDeliveryMode(DeliveryMode.PERSISTENT);
            
            String text = "hello activemq";
            
            Message textMessage = session.createTextMessage(text);
            messageProducer.send(textMessage);
            
            session.close();
            connection.close();
        } catch (Exception e) {
            System.out.println(e);
            e.printStackTrace();
        }
    }
    
    public static void consumer () {
        try {
            String brokerURL = "tcp://localhost:61616";
            String user = "admin";
            String password = "admin";
            ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(user, password, brokerURL);
            
            Connection connection = factory.createConnection();
            connection.start();
            
            Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            Destination queue = session.createQueue("demoQueue");
            
            MessageConsumer consumer = session.createConsumer(queue);
            Message message = consumer.receive(1000);
            
            if (message instanceof TextMessage) {
                TextMessage textMessage = (TextMessage) message;
                String text = textMessage.getText();
                
                System.out.println( text );
            }
            consumer.close();
            session.close();
            connection.close();
        } catch (Exception e) {
            System.out.println(e);
            e.printStackTrace();
        }
    }

}

1、执行 producer 方法后在管理界面可以看到相关信息

2、执行 consumer 方法,消费消息