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Xiaobian to share with you Apache ActiveMQ messaging sample analysis, I believe most people do not know how, so share this article for your reference, I hope you read this article after a great harvest, let us go to understand it!

1. Download ActiveMQ

Download activeMQ: activemq.apache.org/

I'm using version 5.9.0 here.

2. Running ActiveMQ

Unzip apache-activemq-5.5.1-bin.zip and double-click apache-activemq-5.5.1\bin\activemq.bat to run ActiveMQ.

After you start ActiveMQ, log in to http://localhost:8161/admin/and create a Queue named FirstQueue.

3. Create Eclipse project and run

Create project: ActiveMQ, and import the jar files required under apache-activemq-5.9.0\lib directory. The project structure is shown in the following figure:

3.1.Sender.javapackage per.activemq.test;import javax.jms.Connection;import javax.jms.ConnectionFactory;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 Sender { private static final int SEND_NUMBER = 5; public static void main(String[] args) { // ConnectionFactory: Connection factory, JMS uses it to create connections ConnectionFactory connectionFactory; // Connection: JMS client to JMS provider connection Connection connection = null; // Session: A thread that sends or receives messages Session session; // Destination: Destination of the message; to whom the message is sent. Destination destination; // MessageProducer: Message sender MessageProducer producer; //Construct ConnectionFactory instance object, here using ActiveMq implementation jar connectionFactory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER,ActiveMQConnection.DEFAULT_PASSWORD,"tcp://127.0.0.1:61616"); try { //construct connection object from factory connection = connectionFactory.createConnection(); //Start connection.start(); //Get operation connection session = connection.createSession(Boolean.TRUE, Session.AUTO_ACKNOWLEDGE); //Get session Note that the parameter value xingbo.xu-queue is a queue of servers, which must be configured in the console of ActiveMq destination = session.createQueue("FirstQueue"); //Get message generator [sender] producer = session.createProducer(destination); //Settings are not persistent, learn here, actually decide according to project producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT); //construct message, write dead here, item is parameter, or method get sendMessage(session,producer); session.commit(); } catch (Exception e) { // TODO: handle exception } finally { try { if (null != connection) connection.close(); } catch (Throwable ignore) { } } } private static void sendMessage(Session session, MessageProducer producer) throws Exception { for (int i = 0; i

< SEND_NUMBER; i++) { TextMessage message = session.createTextMessage("ActiveMQ发送的消息："+i); // 发送消息到目的地方 System.out.println("发送消息,ActiveMQ发送的消息:"+i); producer.send(message); } }}3.2.Receiver.javapackage per.activemq.test;import javax.jms.Connection;import javax.jms.ConnectionFactory;import javax.jms.Destination;import javax.jms.MessageConsumer;import javax.jms.Session;import javax.jms.TextMessage;import org.apache.activemq.ActiveMQConnection;import org.apache.activemq.ActiveMQConnectionFactory;public class Receiver { public static void main(String[] args) { // ConnectionFactory ：连接工厂，JMS 用它创建连接 ConnectionFactory connectionFactory; // Connection ：JMS 客户端到JMS Provider 的连接 Connection connection = null; // Session： 一个发送或接收消息的线程 Session session; // Destination ：消息的目的地;消息发送给谁. Destination destination; // 消费者，消息接收者 MessageConsumer consumer; connectionFactory = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_USER,ActiveMQConnection.DEFAULT_PASSWORD,"tcp://127.0.0.1:61616"); try { // 构造从工厂得到连接对象 connection = connectionFactory.createConnection(); // 启动 connection.start(); // 获取操作连接 session = connection.createSession(Boolean.FALSE, Session.AUTO_ACKNOWLEDGE); // 获取session注意参数值xingbo.xu-queue是一个服务器的queue，须在在ActiveMq的console配置 destination = session.createQueue("FirstQueue"); consumer = session.createConsumer(destination); while (true) { //设置接收者接收消息的时间，为了便于测试，这里谁定为100s TextMessage message = (TextMessage) consumer.receive(100000); if (null != message) { System.out.println("收到消息" + message.getText()); } else { break; } } } catch (Exception e) { // TODO: handle exception } finally { try { if (null != connection) connection.close(); } catch (Throwable ignore) { } } }}4.注意事项 最后接收者跟发送者在不同的机器上测试 项目所引用的jar最后在ActiveMQ下的lib中找，这样不会出现版本冲突。 5.测试过程刚开始运行Receiver以后console介面没有任何信息，运行Sender以后，Receiver中的console显示如下信息： 发送消息：ActiveMq 发送的消息1 发送消息：ActiveMq 发送的消息2 发送消息：ActiveMq 发送的消息3 发送消息：ActiveMq 发送的消息4 发送消息：ActiveMq 发送的消息5 而回到Sender中发现console界面出现如下信息： 收到消息ActiveMq 发送的消息1 收到消息ActiveMq 发送的消息2 收到消息ActiveMq 发送的消息3 收到消息ActiveMq 发送的消息4 收到消息ActiveMq 发送的消息5 5.查看队列

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