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springJMS+activeMQ实践

 
阅读更多
linux上安装activeMQ   http://blog.163.com/yangzhanghui_job/blog/static/17957506220127171173225/
ActiveMQ-5.8.0 安装和启动 http://chenzhou123520.iteye.com/blog/1915287
在CentOS Linux下部署Activemq 5 http://sunbean.blog.51cto.com/972509/675529





原文:http://my.oschina.net/wangrikui/blog/471714
运行环境:jdk1.6 ,javaEE5 , spring2.5 ,activeMQ5.4.3.

一定要注意activeMQ的版本与jdk的兼容性,最新的activeMQ版本估计要在jdk1.7以上才能运行。

先说一下activeMQ的安装:

1、下载:http://activemq.apache.org/download.html 选择合适的Windows版本

2、安装

(1) 首先配置JAVA环境变量

JAVA_HOME=D:\Program Files\Java\jdk1.5.0

CLASSPAHT=.;%JAVA_HOME%\lib

PATH=%JAVA_HOME%\bin;

(2)直接解压至任意目录(例如:D:\apache-activemq-5.3.0)

3、启动ActiveMQ服务器:直接运行\bin\win32\activemq.bat

当运行成功后,界面显示: Started SelectChannelConnector@0.0.0.0:8161 即说明activemq启动成功。

4、打开ActiveMQ消息管理后台系统 http://localhost:8161/admin/



需要依赖的jar包有:spring.jar , activemq-all-5.4.3.jar , commons-logging-api-1.1.jar , commons-io-1.3.2.jar



好了,准备工作做完后,开始上代码,

先看一下,我们最终的Spring配置文件applicationContext.xml的内容,如下所示:
 <?xml version="1.0" encoding="UTF-8"?> 
<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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
 xmlns:p="http://www.springframework.org/schema/p"
 xmlns:jee="http://www.springframework.org/schema/jee"
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
  http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd
  http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
  
 <!-- jms 连接工厂 -->
    <bean id="jmsFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
        <!-- 配置代理的地址,即配置activeMQ的连接URI,
         让jms工厂能够连接到activeMQ服务器(将activeMQ暴露给客户端使用,
         负责客户端与activeMQ之间的连接通信) -->
        <property name="brokerURL">
            <value>tcp://localhost:61616</value><!-- 一种标准URI地址,意思是说标识一个本地的端口号位61616的TCP连接(其中,"61616"是activeMQ默认的连接端口号) -->
        </property>
    </bean>
    <!-- ActiveMQ连接器将这种简单等级结构的URI模式称为低等级的连接器(low-levelconnectors),
     并为这些连接器实现了基本的网络通信协议。低等级连接器URIs使用主题(scheme)标识底层使用的网络协议,
     使用路径元素定位网络资源服务(一般为主机名加上端口号),使用查询元素用来确定连接器附加信息。 -->
 
    <!-- jms 连接池 -->
     
    <!--  
    <bean id="pooledJmsFactory" class="org.apache.activemq.pool.PooledConnectionFactory">
        <property name="connectionFactory">
            <ref local="jmsFactory" />
        </property>
    </bean>
    -->
 <!-- jms 模板 -->
    <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
        <property name="connectionFactory">
            <ref local="jmsFactory" />
        </property>
    </bean>
     
    <!-- jms Topic -->
    <bean id="myTopic" class="org.apache.activemq.command.ActiveMQTopic"
        autowire="constructor">
        <constructor-arg value="STOCKS.JAVA" />
    </bean>
 
    <!-- jms Consumer -->
    <bean id="javaConsumer"
        class="org.springframework.jms.listener.DefaultMessageListenerContainer">
        <property name="connectionFactory" ref="jmsFactory" />
        <property name="destination" ref="myTopic" />
        <property name="messageListener" ref="myTextListener" />
    </bean>
 
 <!-- 消息监听器 -->
    <bean id="myTextListener" class="demo.TextListener">
    </bean>
     
    <!-- 消息发布器 -->
    <bean id="springPublisher" class="demo.SpringPublisher">
        <property name="template">
            <ref local="jmsTemplate" />
        </property>
        <property name="topic">
            <ref local="myTopic" />
        </property>
    </bean>
</beans>

接下来,消息生成器代码,实现spring的MessageCreator接口:
package demo;
import java.util.Date;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.springframework.jms.core.MessageCreator;
public class MyMessageCreator implements MessageCreator {
 /**
     * 消息序号
     */
    private int msgNo;
  
    public MyMessageCreator(int no) {
        this.msgNo = no;
    }
     
 @Override
 public Message createMessage(Session session) throws JMSException {
  TextMessage textMsg = session.createTextMessage();
        textMsg.setText(new Date() + "第" + this.msgNo + "条消息发出");
  
        return textMsg;
 }
 
}

接下来,消息监听器,实现javaEE的规范MessageListener接口即可,因为要注入到spring的DefaultMessageListenerContainer中。此监听器通过监听来自destination(在spring中配置)的消息,一旦有消息就打印出来:
package demo;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;
public class TextListener implements MessageListener {
 @Override
 public void onMessage(Message message) {
  TextMessage msg = null;
    
        try {
            if (message instanceof TextMessage) {
                msg = (TextMessage) message;
                System.out.println("Reading message: " + msg.getText());
            } else {
                System.out.println("Message of wrong type: "
                        + message.getClass().getName());
            }
        } catch (JMSException e) {
            System.out.println("JMSException in onMessage(): " + e.toString());
        } catch (Throwable t) {
            System.out.println("Exception in onMessage():" + t.getMessage());
        }
 }
}

下面是消息发布器,通过spring的jms模板,即可轻松的获得与activeMQ的连接与通信,从而获得Connection和Destination,再通过JmsTemplate的send方法,即可发送消息到指定的destination(在spring中配置)中,以供客户端接收:
package demo;
import javax.jms.Destination;
import org.springframework.jms.core.JmsTemplate;
public class SpringPublisher {
 /**
     * Jms模板
     */
    private JmsTemplate template;
  
    /**
     * Topic
     */
    private Destination topic;
  
    public JmsTemplate getTemplate() {
        return template;
    }
  
    public void setTemplate(JmsTemplate template) {
        this.template = template;
    }
  
    public Destination getTopic() {
        return topic;
    }
  
    public void setTopic(Destination topic) {
        this.topic = topic;
    }
  
    /**
     * Start
     * 
     * @throws InterruptedException
     */
    public void start() throws InterruptedException {
  
        int messageCount = 10;
  
        while ((--messageCount) > 0) {
            sendMessage(messageCount);
            Thread.sleep(1000);
        }
    }
  
    /**
     * 消息发送
     */
    protected void sendMessage(int msgNO) {
  
        this.template.send(this.topic, new MyMessageCreator(msgNO));
    }
}

至此,基本的jms就已经搭建好了,很简单吧,一个spring上下文配置,一个消息生成器,一个消息发布器,一个监听器,搞定。接下来,编写一个测试类,看运行结果(注意在运行测试类前,一定要先启动activeMQ服务器):
package test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import demo.SpringPublisher;
public class SpringJmsTestMain {
 /**
  * @param args
  */
 public static void main(String[] args) throws InterruptedException {
    
        ApplicationContext context = new ClassPathXmlApplicationContext(
                new String[] { "applicationContext.xml" });
  
        SpringPublisher publisher = (SpringPublisher) context
                .getBean("springPublisher");
        publisher.start();
    }
}

运行结果如下:
Reading message: Sun Jun 28 19:40:05 CST 2015第9条消息发出
Reading message: Sun Jun 28 19:40:06 CST 2015第8条消息发出
Reading message: Sun Jun 28 19:40:07 CST 2015第7条消息发出
Reading message: Sun Jun 28 19:40:08 CST 2015第6条消息发出
Reading message: Sun Jun 28 19:40:09 CST 2015第5条消息发出
Reading message: Sun Jun 28 19:40:10 CST 2015第4条消息发出
Reading message: Sun Jun 28 19:40:12 CST 2015第3条消息发出
Reading message: Sun Jun 28 19:40:13 CST 2015第2条消息发出
Reading message: Sun Jun 28 19:40:14 CST 2015第1条消息发出
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