ActiveMQ安装与使用

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本文介绍ActiveMQ作为Apache出品的流行消息总线的安装、使用及Spring整合方法，包括生产者和监听器端代码示例。

定义

ActiveMQ 是Apache出品，最流行的，能力强劲的开源消息总线。ActiveMQ 是一个完全支持JMS1.1和J2EE 1.4规范的 JMS Provider实现，尽管JMS规范出台已经是很久的事情了，但是JMS在当今的J2EE应用中间仍然扮演着特殊的地位

JMS（Java Messaging Service）是Java平台上有关面向消息中间件的技术规范，翻译为Java消息服务

应用场景

异步消息处理

安装

下载地址：http://activemq.apache.org/download.html

Windows环境，下载后解压直接运行/bin/activemq.bat即可

后台地址：http://localhost:8161/

生产者端代码：

ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory();
        activeMQConnectionFactory.setBrokerURL("tcp://192.168.1.83:61616");
        activeMQConnectionFactory.setUserName("admin");
        activeMQConnectionFactory.setPassword("admin");


        PooledConnectionFactory pooledConnectionFactory = new PooledConnectionFactory();
        pooledConnectionFactory.setConnectionFactory(activeMQConnectionFactory);
        pooledConnectionFactory.setMaximumActiveSessionPerConnection(100);
        pooledConnectionFactory.setIdleTimeout(300000);
        pooledConnectionFactory.setBlockIfSessionPoolIsFull(true);
        pooledConnectionFactory.setMaxConnections(100);

        JmsTemplate jmsTemplate = new JmsTemplate();
        jmsTemplate.setConnectionFactory(pooledConnectionFactory);

        ActiveMQQueue testqueue = new ActiveMQQueue("testqueue");

DefaultMessageListenerContainer defaultMessageListenerContainer = new DefaultMessageListenerContainer();
        defaultMessageListenerContainer.setConnectionFactory(pooledConnectionFactory);
        defaultMessageListenerContainer.setDestination(testqueue);
        defaultMessageListenerContainer.setMessageListener(testQueueMQListener);

        try {
            Connection connection = jmsTemplate.getConnectionFactory().createConnection();
            connection.start();
            Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            MessageProducer producer = session.createProducer(testqueue);
            producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);

            for(int i = 0; i < 10; i ++) {
                TextMessage msg = session.createTextMessage("this is test, num:" + i);
                producer.send(msg);
            }

            connection.close();
        }catch (JMSException e) {
            e.printStackTrace();
        }

监听端代码：

// 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://192.168.1.83:61616");
        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);

            destination = session.createQueue("testqueue");
            consumer = session.createConsumer(destination);
            while (true) {
                //设置接收者接收消息的时间
                TextMessage message = (TextMessage) consumer.receive(1000);
                if (null != message) {
                    System.out.println("收到消息:" + message.getText());
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (null != connection)
                    connection.close();
            } catch (Throwable ignore) {
            }
        }
    }

通过spring整合：

spring配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
   
    <!-- 真正可以产生Connection的ConnectionFactory，由对应的 JMS服务厂商提供-->  
    <bean id="targetConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
        <property name="brokerURL" value="${ActiveMQ.brokerURL}"/>
        <property name="userName" value="${ActiveMQ.userName}"/>
        <property name="password" value="${ActiveMQ.password}"/>
    </bean>

   <bean id="connectionFactory" class="org.apache.activemq.pool.PooledConnectionFactory" destroy-method="stop">
      <property name="connectionFactory" ref="targetConnectionFactory" />
      <!-- 每个连接的最大活动会话,默认500 -->
      <property name="maximumActiveSessionPerConnection" value="100" />
      <!-- 空闲连接超时时间,单位:毫秒 -->
      <property name="idleTimeout" value="300000" />
      <!-- 如果连接池是满的,则阻塞 -->
      <property name="blockIfSessionPoolIsFull" value="true" />
      <!-- 最大连接数 -->
      <property name="maxConnections" value="100" />
   </bean>

   <!-- Spring用于管理真正的ConnectionFactory的ConnectionFactory -->
    <!--<bean id="connectionFactory" class="org.springframework.jms.connection.SingleConnectionFactory">
       <property name="targetConnectionFactory" ref="targetConnectionFactory"/>
    </bean>-->
    
    <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
        <!-- 这个connectionFactory对应的是我们定义的Spring提供的那个ConnectionFactory对象 -->
        <property name="connectionFactory" ref="connectionFactory"/>
    </bean>
      
   
    <!--搜索引擎更新队列目的地-->
    <bean id="searchIndexDestination" class="org.apache.activemq.command.ActiveMQQueue">
       <constructor-arg value="searchIndex"/>
    </bean>

    <!--这个是主题目的地，一对多的
    <bean id="topicDestination" class="org.apache.activemq.command.ActiveMQTopic">
       <constructor-arg value="topic"/>
    </bean>
    -->
    
    <!-- 搜索引擎消息监听器 -->
    <bean id="searchIndexMQListener" class="com.mm.listener.SearchIndexMQListener" >
       <property name="searchBuildCache" ref="searchBuildCache"/>
    </bean>

    <!-- 搜索引擎消息监听容器 -->
    <bean id="searchIndexJmsContainer" class="org.springframework.jms.listener.DefaultMessageListenerContainer">
       <property name="connectionFactory" ref="connectionFactory" />
       <property name="destination" ref="searchIndexDestination" />
       <property name="messageListener" ref="searchIndexMQListener" />
    </bean>


    <!--通用更新队列目的地-->
    <bean id="commonQueueDestination" class="org.apache.activemq.command.ActiveMQQueue">
       <constructor-arg value="commonQueue"/>
    </bean>

   <!-- 通用消息监听器 -->
   <bean id="commonQueueMQListener" class="com.mm.listener.CommonQueueMQListener">
      <property name="solrOwnJoinFacade" ref="solrOwnJoinFacade"/>
   </bean>

   <!-- 通用消息监听容器 -->
   <bean id="commonQueueJmsContainer" class="org.springframework.jms.listener.DefaultMessageListenerContainer">
      <property name="connectionFactory" ref="connectionFactory" />
      <property name="destination" ref="commonQueueDestination" />
      <property name="messageListener" ref="commonQueueMQListener" />
   </bean>

    <bean id="producerService" class="com.mm.jms.ProducerServiceImpl">
       <property name="jmsTemplate" ref="jmsTemplate"/>
       <property name="destinationMap">
          <map>
             <entry key="searchIndexDestination">
                <ref bean="searchIndexDestination"/>
             </entry>
             <entry key="commonQueueDestination">
                <ref bean="commonQueueDestination"/>
             </entry>
          </map>
       </property>
    </bean>
   

</beans>

生产者端代码：

public class ProducerServiceImpl implements ProducerService {
    private JmsTemplate jmsTemplate;
    private Map<String, Destination> destinationMap;
    

    @Override
    public void sendTextMessage(DestinationTypeName typeName, String message) {
        try {

            Destination destination = destinationMap.get(typeName.getTypeName());
            if(destination == null) {
                return;
            }
            Connection connection = jmsTemplate.getConnectionFactory().createConnection();
            connection.start();
            Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            MessageProducer producer = session.createProducer(destination);
            producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);

            TextMessage msg = session.createTextMessage(message);
            producer.send(msg);
            connection.close();
        }catch (JMSException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void sendObjectMessage(DestinationTypeName typeName, JmsObjectMessage jmsObjectMessage) {
        try {

            Destination destination = destinationMap.get(typeName.getTypeName());
            if(destination == null) {
                return;
            }
            Connection connection = jmsTemplate.getConnectionFactory().createConnection();
            connection.start();
            Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            MessageProducer producer = session.createProducer(destination);
            producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);

            ObjectMessage msg = session.createObjectMessage(jmsObjectMessage);
            producer.send(msg);
            connection.close();
        }catch (JMSException e) {
            e.printStackTrace();
        }
    }

    private static String env(String key, String defaultValue) {
        String rc = System.getenv(key);
        if( rc== null )
            return defaultValue;
        return rc;
    }

    private static String arg(String []args, int index, String defaultValue) {
        if( index < args.length )
            return args[index];
        else
            return defaultValue;
    }

    public void setJmsTemplate(JmsTemplate jmsTemplate) {
        this.jmsTemplate = jmsTemplate;
    }

    public void setDestinationMap(Map<String, Destination> destinationMap) {
        this.destinationMap = destinationMap;
    }
}

监听端代码：

public class CommonQueueMQListener implements MessageListener {
    private static Log logger = LogFactory.getLog(CommonQueueMQListener.class);
    private SolrOwnJoinFacade solrOwnJoinFacade;

    @Override
    public void onMessage(Message message) {
        if(message instanceof TextMessage){
            TextMessage textMsg = (TextMessage) message;

            logger.debug(textMsg);

        }else if(message instanceof ObjectMessage) {
            ObjectMessage objMsg = (ObjectMessage) message;
            try {
                if(objMsg.getObject() instanceof OwnJoinIndexMQBean) {
                    OwnJoinIndexMQBean ownJoinIndexMQBean=(OwnJoinIndexMQBean) objMsg.getObject();
                    solrOwnJoinFacade.updateSolrIndex(ownJoinIndexMQBean.getNid());
                }
            } catch (JMSException e) {
                e.printStackTrace();
            }
        }

    }

    public void setSolrOwnJoinFacade(SolrOwnJoinFacade solrOwnJoinFacade) {
        this.solrOwnJoinFacade = solrOwnJoinFacade;
    }
}