Java Message Service(JMS)是 SUN 提出的旨在统一各种 MOM 系统接口的规范,它包含点对点(Point to Point,PTP)和发布/订阅(Publish/Subscribe,pub/sub)两种消息模型,提供可靠消息传输、事务和消息过滤等机制。
JMS 支持两种截然不同的消息传送模型:PTP(即点对点模型)和Pub/Sub(即发布/订阅模型),分别称作:PTP Domain 和Pub/Sub Domain.
PTP(使用Queue 即队列目标) 消息从一个生产者传送至一个消费者.在此传送模型中,目标是一个队列。
每条消息只能发送至、并由一个消费者成功使用。如果没有已经向队列目标注册的消费者,队列将保留它收到的消息,并在某个消费者向该队列进行注册时将消息传送给该消费者.
Pub/Sub(使用 Topic即主题目标)消息从一个生产者传送至任意数量的消费者。在此传送模型中,目标是一个主题。每个消息可以发送至任意数量的订阅消费者。主题目标也支持持久订阅的概念。持久订阅表示消费者已向主题目标进行注册,
但在消息传送时此消费者可以处于非活动状态。当此消费者再次处于活动状态时,它将接收此信息。如果没有已经向主题目标注册的消费者,主题不保留其接收到的消息,除非有非活动消费者注册了持久订阅。
贴下发送和接收消息的xml配置,完整的代码从附件下载
发送消息xml配置
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:amq="http://activemq.apache.org/schema/core" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core-5.4.2.xsd" default-autowire="byName"> <!-- 连接ActiveMQ --> <amq:connectionFactory id="defaultFactory" brokerURL="tcp://127.0.0.1:61616"></amq:connectionFactory> <bean id="cachingConnectionFactory" class="org.springframework.jms.connection.CachingConnectionFactory"> <property name="targetConnectionFactory" ref="defaultFactory"></property> <property name="sessionCacheSize" value="10"></property> </bean> <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate"> <property name="connectionFactory" ref="cachingConnectionFactory"></property> <property name="explicitQosEnabled" value="true" /><!-- 使 deliveryMode, priority, timeToLive设置生效--> <property name="deliveryPersistent" value="false" /> </bean> <!-- 队列发送消息 --> <bean id="ptpMessageProducer" class="com.jms.producer.PtpMessageProducer"> <property name="jmsTemplate" ref="jmsTemplate"></property> <property name="queue" ref="ptpQueue"></property> </bean> <!-- 主题发送消息 --> <bean id="publisherMessageProducer" class="com.jms.producer.PublisherMessageProducer"> <property name="jmsTemplate" ref="jmsTemplate"></property> <property name="topic" ref="topicQueue"></property> </bean> <amq:queue name="ptpQueue" physicalName="ptp.queue.message"></amq:queue> <amq:topic name="topicQueue" physicalName="topic.queue.message"></amq:topic> </beans>
接收消息xml配置
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:amq="http://activemq.apache.org/schema/core" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core-5.4.2.xsd" default-autowire="byName"> <description>jms 配置</description> <amq:connectionFactory id="defaultFactory" brokerURL="tcp://127.0.0.1:61616"></amq:connectionFactory> <bean id="cacheConnectionFactory" class="org.springframework.jms.connection.CachingConnectionFactory"> <property name="targetConnectionFactory" ref="defaultFactory"></property> <property name="sessionCacheSize" value="10"></property> </bean> <!--异步调用消息 --> <bean class="org.springframework.jms.listener.DefaultMessageListenerContainer"> <property name="connectionFactory" ref="cacheConnectionFactory"></property> <property name="destination" ref="ptpQueue"></property> <!--<property name="destination" ref="topicQueue"></property>--> <property name="messageListener" ref="jmsReciveListener"></property> <property name="sessionAcknowledgeModeName" value="AUTO_ACKNOWLEDGE"/> </bean> <!-- 主题 --> <amq:topic id="topicQueue" physicalName="topic.queue.message"></amq:topic> <!-- 队列 --> <amq:queue id="ptpQueue" physicalName="ptp.queue.message"></amq:queue> <bean id="jmsReciveListener" class="com.jms.receive.JmsReceiveListener"></bean> </beans>
private Destination queue ; private final ExecutorService threadPool = Executors.newFixedThreadPool(2); public void sendMessage(final Object obj){ Runnable task=new Runnable(){ @Override public void run() { try { jmsTemplate.send(queue, new MessageCreator(){ @Override public Message createMessage(Session session) throws JMSException { ObjectMessage message = session.createObjectMessage(); message.setObject(obj); return message; } }); }catch(Exception e){ logger.error("异常",e); } } }; threadPool.execute(task); } public Destination getQueue() { return queue; } public void setQueue(Destination queue) { this.queue = queue; }