spring 集成apache qpid 简单demo

spring 提供spring-jms模块，用以集成JMS到spring 容器中，并提供jmsTemplate模版类来操作jms，类似集成jdbc数据库操作一样。

首先，我们新建一个applicationContext-qpid.xml来做qpid的集成操作

<?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.xsd ">

    <!-- Spring提供的JMS工具类，它可以进行消息发送、接收等 -->
    <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">  
        <property name="connectionFactory" ref="jQpidConnectionFactory"/>  
    </bean>

    <!-- 链接到java broker服务器 -->
    <bean id="jQpidConnectionFactory" class="org.apache.qpid.client.AMQConnectionFactory">
        <constructor-arg index="0" value="amqp://guest:guest@clientid/?brokerlist='tcp://localhost:5672'" />
    </bean>

    <!-- 缓存会话，保证单链接 -->
    <bean id="jCachingConnectionFactory" class="org.springframework.jms.connection.CachingConnectionFactory">
        <property name="targetConnectionFactory" ref="jQpidConnectionFactory" />
        <property name="sessionCacheSize" value="1" />
        <property name="reconnectOnException" value="true" />
    </bean>

    <!-- 订阅路径 -->
    <bean id="jDestination" class="org.apache.qpid.client.AMQAnyDestination">
        <constructor-arg index="0" value="ADDR:message_queue; {create: always}" />
    </bean>

    <!-- 接收事件处理器 -->
    <bean id="jReceiver" class="com.liuxg.qpid.receiver.MsgReceiver" />

    <!-- 事务处理 --> 
    <bean id="transactionManager" class="org.springframework.transaction.jta.JtaTransactionManager"/>

    <!-- 默认消息监听器 -->
    <bean id="deviceStatusContainer" class="org.springframework.jms.listener.DefaultMessageListenerContainer">
        <property name="connectionFactory" ref="jCachingConnectionFactory" />
        <property name="exceptionListener" ref="jCachingConnectionFactory" />
        <property name="messageListener" ref="jReceiver" />
        <property name="destination" ref="jDestination" />
        <property name="transactionManager" ref="transactionManager"/>
    </bean>

</beans>

然后需要把applicationContext-qpid.xml添加到web.xml的contextConfigLocation中

<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:META-INF/applicationContext*.xml</param-value>
</context-param>

然后，在发送端，可以利用模版类发送消息

@Service
public class SenderService {

    @Autowired JmsTemplate jmsTemplate;
    @Autowired AMQAnyDestination deviceStatusDestination;

    /** * 发送消息 */
    public void sendMsg(){

        jmsTemplate.send(deviceStatusDestination, new MessageCreator() {
            @Override
            public Message createMessage(Session session) throws JMSException {
                return session.createTextMessage("hello world !!");
            }
        });
    }

}

这里发送的时候，可以利用spring的消息转化器，它支持String 和TextMessage, byte[] 和BytesMesssage还有java.util.Map 和 MapMessage的相互转化，例如下面

public void sendWithConversion() {
    Map map = new HashMap();
    map.put("Name", "Mark");
    map.put("Age", new Integer(47));
    jmsTemplate.convertAndSend("testQueue", map, new MessagePostProcessor() {
        public Message postProcessMessage(Message message) throws JMSException {
            message.setIntProperty("AccountID", 1234);
            message.setJMSCorrelationID("123-00001");
            return message;
        }
    });
}

最后在接收端，可以定义一个类实现SessionAwareMessageListener或者DeviceStatusReceiver，这里我们实现SessionAwareMessageListener

public class MsgReceiver implements SessionAwareMessageListener<Message> {

    @Override
    public void onMessage(Message message, Session session) throws JMSException {
        JMSTextMessage xx = (JMSTextMessage) message;
        String text = xx.getText();
        System.out.println(text);
    }

}