分布式服务框架学习笔记8 ActiveMQ入门使用

测试环境

windows+Eclipse
下载
http://activemq.apache.org/download-archives.html

下载后 打开c:/tools/apache-activemq-5.9.0/bin/activemq.bat启动服务

添加依赖

    <dependency>          <groupId>org.apache.activemq</groupId>        <artifactId>activemq-all</artifactId>        <version>5.14.1</version>    </dependency>

Persistence持久化存储

• AMQ Message Store
  ActiveMQ 5.0 的缺省持久化存储方式。

• Kaha Persistence
  这是一个专门针对消息持久化的解决方案。它对典型的消息使用模式进行了优化。

• JDBC Persistence
  数据库方式：Apache Derby, Axion, DB2, HSQL, Informix, MaxDB, MySQL, Oracle, Postgresql, SQLServer, Sybase。

• Disable Persistence
  不应用持久化存储。

方法解析

生产者创建过程

消费者消费消息

代码

App.java

package com.whrsmart.ActiveMQ;import javax.jms.JMSException;import org.apache.activemq.ActiveMQConnection;/** * */public class App {    public static void main( String[] args )    {         String username = "admin1";         String password = "admin1";         String url = ActiveMQConnection.DEFAULT_BROKER_URL;         // 创建生产者         Producer producer;         try {             producer = new Producer(url, username, password);             // 生产者产生一条消息             producer.sendMessage("Hello World");             // 创建消费者             Consumer consumer = new Consumer(url, username, password);             // 消费者读取一条消息             Object msg = consumer.receive();             // 输出消息内容             System.out.println(msg);             producer.close();             consumer.close();         } catch (JMSException e) {             e.printStackTrace();         }    }}

Consumer.java

package com.whrsmart.ActiveMQ;import javax.jms.Connection;import javax.jms.ConnectionFactory;import javax.jms.Destination;import javax.jms.JMSException;import javax.jms.MessageConsumer;import javax.jms.Session;import javax.jms.TextMessage;import org.apache.activemq.ActiveMQConnectionFactory;/** * 消费者 * */public class Consumer {    /**     * 用户名     */    private String username;    /**     * 密码     */    private String password;    /**     * 连接地址，host:port，如localhost:8161     */    private String url;    /**     * 队列名     */    private static final String QUEUE_NAME = "HELLO";    //连接工厂    private ConnectionFactory connectionFactory;    //会话 接受或者发送消息的线程    private Session session;    //消息的目的地    private Destination destination;    //消息消费者    private MessageConsumer messageConsumer;    //与MQ的连接    private Connection connection = null;    public Consumer(String url, String username, String password) throws JMSException {        this.url = url;        this.username = username;        this.password = password;        this.init();    }    /**     * 初始化方法     * @throws JMSException      */    private void init() throws JMSException {        // 实例化工厂        connectionFactory = new ActiveMQConnectionFactory(                username, password, url);        // 获取连接        connection = connectionFactory.createConnection();        // 启动        connection.start();        // 获取session        session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE);        // 创建指定队列名的队列        destination = session.createQueue(Consumer.QUEUE_NAME);        // 创建消息消费者        messageConsumer = session.createConsumer(destination);    }    /**     * 接收消息     * @throws JMSException      */    public String receive() throws JMSException {        TextMessage msg = (TextMessage) messageConsumer.receive(5000);        if(msg == null) {            return null;        }        return msg.getText();    }    public void close() throws JMSException {        session.close();        connection.close();    }}

Producer.java

package com.whrsmart.ActiveMQ;import javax.jms.ConnectionFactory;import javax.jms.Destination;import javax.jms.JMSException;import javax.jms.MessageProducer;import javax.jms.Session;import javax.jms.TextMessage;import org.apache.activemq.ActiveMQConnectionFactory;/** * 生产者 */public class Producer implements Cloneable{    /**     * 用户名     */    private String username;    /**     * 密码     */    private String password;    /**     * 连接地址，host:port，如localhost:8161     */    private String url;    /**     * 队列名     */    private static final String QUEUE_NAME = "HELLO";    //连接工厂    private ConnectionFactory connectionFactory;    //会话 接受或者发送消息的线程    private Session session;    //消息的目的地    private Destination destination;    //消息生产者    private MessageProducer messageProducer;    //与MQ的连接    private javax.jms.Connection  connection = null;    public Producer(String url, String username, String password) throws JMSException {        this.url = url;        this.username = username;        this.password = password;        this.init();    }    /**     * 初始化方法     * @throws JMSException      */    private void init() throws JMSException {        // 实例化工厂        connectionFactory = new ActiveMQConnectionFactory(username, password, url);        // 获取连接        connection = connectionFactory.createConnection();        // 启动        connection.start();        // 获取session        session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);        // 创建指定队列名的队列        destination = session.createQueue(Producer.QUEUE_NAME);        // 创建消息生产者        messageProducer = session.createProducer(destination);    }    /**     * 发送消息     * @param data 数据     * @throws JMSException      */    public void sendMessage(String data) throws JMSException {        // 创建一个Message        TextMessage msg = session.createTextMessage(data);        // 通过消息发送者进行消息发送        this.messageProducer.send(msg);    }    public void close() throws JMSException {        session.close();        connection.close();    }}

本文参考：
http://www.tuicool.com/articles/EjyqA3R