通过spring开发ActiveMQ简单应用

使用spring的支持类开发JMS程序可以简化代码，确保开发质量。以下是使用ActiveMQ作为JMS实现的示例。

首先需要确保如下类库，这里使用maven的pom：

 

  

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   <
   dependency
   >
    
   <
   groupId
   >
   org.springframework
   </
   groupId
   >
    
   <
   artifactId
   >
   spring
   -
   jms
   </
   artifactId
   >
    
   <
   version
   >
   2.5
   .
   6
   </
   version
   >
    
   </
   dependency
   >
    
   <
   dependency
   >
    
   <
   groupId
   >
   org.apache.xbean
   </
   groupId
   >
    
   <
   artifactId
   >
   xbean
   -
   spring
   </
   artifactId
   >
    
   <
   version
   >
   3.5
   </
   version
   >
    
   </
   dependency
   >
    
   <
   dependency
   >
    
   <
   groupId
   >
   org.apache.activemq
   </
   groupId
   >
    
   <
   artifactId
   >
   activemq
   -
   core
   </
   artifactId
   >
    
   <
   version
   >
   5.2
   .
   0
   </
   version
   >
    
   </
   dependency
   >

  

 

编写消息生产者的代码：

 

  

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   @Component 
   public
    
   class
    MyMessageProducer { @Resource(name 
   =
    
   "
   Queue
   "
   ) 
   private
    Destination destination; @Autowired 
   private
    JmsTemplate jmsTemplate; 
   public
    
   void
    sendMessage(
   final
    String message) { 
   this
   .jmsTemplate.send(
   this
   .destination, 
   new
    MessageCreator() { @Override 
   public
    Message createMessage(Session session) 
   throws
    JMSException { TextMessage textMessage 
   =
    session.createTextMessage(); textMessage.setText(message); 
   return
    textMessage; } }); } }

  

有关生产者部分spring的配置文件内容：

 

  

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   <?
   xml version="1.0" encoding="UTF-8"
   ?>
    
   <
   beans 
   xmlns
   ="http://www.springframework.org/schema/beans"
    xmlns:amq
   ="http://activemq.apache.org/schema/core"
    xmlns:lang
   ="http://www.springframework.org/schema/lang"
    xmlns:context
   ="http://www.springframework.org/schema/context"
    xmlns:xsi
   ="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop
   ="http://www.springframework.org/schema/aop"
    xmlns:tx
   ="http://www.springframework.org/schema/tx"
    xmlns:util
   ="http://www.springframework.org/schema/util"
    xsi:schemaLocation
   ="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.5.xsd http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd"
   >
    
   <
   context:annotation-config 
   />
    
   <
   context:component-scan 
   base-package
   ="activemq.demo.spring"
    
   />
    
   <
   bean 
   id
   ="jmsFactory"
    class
   ="org.apache.activemq.ActiveMQConnectionFactory"
   >
    
   <
   property 
   name
   ="brokerURL"
   >
    
   <
   value
   >
   tcp://localhost:61616
   </
   value
   >
    
   </
   property
   >
    
   </
   bean
   >
    
   <
   bean 
   id
   ="myJmsTemplate"
    class
   ="org.springframework.jms.core.JmsTemplate"
   >
    
   <
   property 
   name
   ="connectionFactory"
    ref
   ="jmsFactory"
    
   />
    
   </
   bean
   >
    
   <
   amq:queue 
   name
   ="Queue"
    physicalName
   ="example.D"
    
   />

  

这样，执行发送代码，在activemq的admin界面中可以观察到发送成功的消息。

异步接收的代码：

 

  

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   public
    
   class
    MyMessageConsumer 
   implements
    MessageListener { @Override 
   public
    
   void
    onMessage(Message message) { TextMessage textMessage 
   =
    (TextMessage) message; 
   try
    { System.out.println(
   "
   >>>>>>>
   "
   +
   textMessage.getText()); 
   //
    throw new RuntimeException(">>>>>>>>>>test error");
    
    } 
   catch
    (JMSException e) { 
   throw
    
   new
    RuntimeException(e); } } }

  

有关异步接收代码的spring配置：

 

  

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   <
   bean 
   id
   ="myMessageConsumer"
    class
   ="activemq.demo.spring.MyMessageConsumer"
    
   />
    
   <
   bean 
   id
   ="jmsContainer"
    class
   ="org.springframework.jms.listener.DefaultMessageListenerContainer"
   >
    
   <
   property 
   name
   ="connectionFactory"
    ref
   ="jmsFactory"
    
   />
    
   <
   property 
   name
   ="destination"
    ref
   ="Queue"
    
   />
    
   <
   property 
   name
   ="messageListener"
    ref
   ="myMessageConsumer"
    
   />
    
   <
   property 
   name
   ="sessionTransacted"
    value
   ="true"
   />
    
   </
   bean
   >
    

  

这样，就实现了基于spring和activemq的JMS的同步发送和异步提交。如果将MyMessageConsumer的抛出异常部分取消注释，则接收信息后，spring捕获到该异常并自动回滚事务。通过activemq的admin界面会监控到消息依然留在队列中。