Apache ActiveMQ DEMO的搭建流程

此处描述一下从配置mq软件到搭建项目的整个流程。

1.首先需要安装ActiveMQ，到Apache官网下载相关的安装包 http://activemq.apache.org/download-archives.html

此处我下载的版本是 ActiveMQ 5.9.1 Release ，将其解压到linux的centos下的/usr/local下的目录，进入/usr/local/apache-activemq-5.9.1/bin，运行./activemq start就启动完毕了，通常情况下肯定是正常的。

2.新建一个maven项目，添加项目依赖：

<dependencies>        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>3.8.1</version>            <scope>test</scope>        </dependency>        <dependency>            <groupId>org.apache.activemq</groupId>            <artifactId>activemq-all</artifactId>            <version>5.9.1</version>        </dependency>        <!-- 日志相关依赖 -->        <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-api</artifactId>            <version>${slf4j.version}</version>        </dependency>        <dependency>            <groupId>org.slf4j</groupId>            <artifactId>slf4j-log4j12</artifactId>            <version>${slf4j.version}</version>        </dependency>        <dependency>            <groupId>log4j</groupId>            <artifactId>log4j</artifactId>            <version>${log4j.version}</version>        </dependency>    </dependencies>    <properties>        <log4j.version>1.2.12</log4j.version>        <slf4j.version>1.6.6</slf4j.version>    </properties>

3.建立消息生产者ProducerQueueApp.java

package com.demo.activemq.demo;import org.apache.activemq.ActiveMQConnectionFactory;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import javax.jms.*;/** * Producer 功能描述：ActiveMQ生产者实例 * * @author RickyLee * @date 2016/11/3 13:17 */public class ProducerQueueApp {    private static final Logger LOGGER = LoggerFactory.getLogger(ProducerQueueApp.class);    private static final String BROKER_URL = "tcp://192.168.0.104:61616";    private static final String SUBJECT = "test-activemq-queue";    public static void main(String[] args) throws JMSException {        //初始化连接工厂        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(BROKER_URL);        //获得连接        Connection conn = connectionFactory.createConnection();        //启动连接，因为默认是关闭的        conn.start();        //创建Session，此方法第一个参数表示会话是否在事务中执行，第二个参数设定会话的应答模式        Session session = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);        //创建队列        Destination dest = session.createQueue(SUBJECT);        //createTopic方法用来创建Topic        //session.createTopic("TOPIC");        //通过session可以创建消息的生产者        MessageProducer producer = session.createProducer(dest);        for (int i = 0; i < 5; i++) {            //初始化一个mq消息            TextMessage message = session.createTextMessage("hello active mq 中文" + i);            //发送消息            producer.send(message);            LOGGER.debug("send message {}", i);        }        //关闭mq连接        conn.close();    }}

4.创建消费者

package com.sdzn.activemq.demo;import org.apache.activemq.ActiveMQConnectionFactory;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import javax.jms.*;/** * ConsumerApp 功能描述：ActiveMQ消费者实例 * * @author RickyLee  * @date 2016/11/3 13:27 */public class ConsumerApp implements MessageListener {    private static final Logger LOGGER = LoggerFactory.getLogger (ConsumerApp.class);    private static final String BROKER_URL = "tcp://192.168.0.104:61616";    private static final String SUBJECT = "test-activemq-queue";    public static void main(String[] args) throws JMSException {        //初始化ConnectionFactory        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(BROKER_URL);        //创建mq连接        Connection conn = connectionFactory.createConnection();        //启动连接        conn.start();        //创建会话        Session session = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);        //通过会话创建目标        Destination dest = session.createQueue(SUBJECT);        //创建mq消息的消费者        MessageConsumer consumer = session.createConsumer(dest);        //初始化MessageListener        ConsumerApp me = new ConsumerApp();        //给消费者设定监听对象        consumer.setMessageListener(me);    }    public void onMessage(Message message) {        TextMessage txtMessage = (TextMessage)message;        try {            LOGGER.info ("get message " + txtMessage.getText());        } catch (JMSException e) {            LOGGER.error("error {}", e);        }    }}

5.至此，搭建基本完成。通过运行生产者，进入http://192.168.0.104:8161/admin，如果有填用户名密码的地方都填admin，进入以后可以看到发送的消息；

点开test-activemq-queue可以看到

这个时候启动消费者，可以看到控制台打印的日志消息，同时，mq上的消息被消费；

至于消息订阅/发布模式和应答模式，还在研究中，后续再发文。