一个简单的JMS实例（activeMQ）

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选择ActiveMQ。

建立一个简单的Maven工程，pom.xml如下：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.gof</groupId>  <artifactId>jms-test</artifactId>  <version>0.0.1-SNAPSHOT</version>  <packaging>jar</packaging>  <name>jms-test</name>  <url>http://maven.apache.org</url>  <properties>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  </properties>  <dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>3.8.1</version>      <scope>test</scope>    </dependency>        <!-- Add by WXB -->    <dependency>      <groupId>org.apache.activemq</groupId>      <artifactId>activemq-client</artifactId>      <version>5.10.0</version>    </dependency>      </dependencies></project>

创建测试类：

package com.gof.jms.test;import javax.jms.Connection;import javax.jms.ConnectionFactory;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 SimpleMessageSendandReceiveApp {public static final String user = "system";public static final String password = "manager";public static final String url = "tcp://localhost:61616";public static final String queueName = "test_queue";public static final String messageBody = "Hello JMS!";public static final boolean transacted = false;public static final boolean persistent = false;    public static void main(String[] args){    Connection connection = null;    Session session = null;        try{    // create the connection        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(user, password, url);            connection = connectionFactory.createConnection();            connection.start();                        // create the session            session = connection.createSession(transacted, Session.AUTO_ACKNOWLEDGE);            Destination destination = session.createQueue(queueName);                        // create the producer            MessageProducer producer = session.createProducer(destination);            if (persistent){            producer.setDeliveryMode(DeliveryMode.PERSISTENT);            }else{            producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);            }                        // create text message            Message message = session.createTextMessage(messageBody);                        // send the message            producer.send(message);            System.out.println("Send message: " + ((TextMessage)message).getText());                        // create the consumer            MessageConsumer consumer = session.createConsumer(destination);            // blocking till receive the message            Message recvMessage = consumer.receive();            System.out.println("Receive message: " + ((TextMessage)recvMessage).getText());                }catch (Exception e){    e.printStackTrace();    }finally{    try{    // close session and connection        if (session != null){        session.close();        }        if (connection != null){        connection.close();        }    }catch (Exception e){    e.printStackTrace();    }    }    }}

开始测试：

启动ActiveMQ,在admin页面（http://localhost:8161/admin）中创建名为test_queue的Queue：

分步运行程序，当调用：

producer.send(message);

可以看到ActiveMQ接收到了这个消息：

同时也可以看到该Queue当前的Active Producer：

consumer.receive();

可以看到该消息被消费掉：

Send message: Hello JMS!
Receive message: Hello JMS!

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