spring +ActiveMQ 实战 topic selecter指定接收

spring +ActiveMQ 实战 topic selecter指定接收

queue:点对点模式,一个消息只能由一个消费者接受

topic:一对多,发布/订阅模式,需要消费者都在线(可能会导致信息的丢失)

看了网上很多的文件,但大都是不完整的,或不是自己想要的特异性接受功能,特意研究了一下,总结总结

 

一,下载并安装ActiveMQ

首先我们到apache官网上下载activeMQ(http://activemq.apache.org/download.html),进行解压后运行其bin目录下面的activemq.bat文件启动activeMQ。

二,新建一个maven 项目并导入相关jar包

三,在maven中引入:

 

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    org.apache.activemq

    activemq-core

    5.7.0

  

  

    org.apache.activemq

    activemq-pool

    5.12.1

  

 

四,spring-active.xml配置



    
    

    

    
    
        
        
    

    
    
        
        
            first-queue
        
    

    
        
        
    


    
    
        
        
        
        
        
        
    

    
    


五,springmvc.xml配置

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"1.0" encoding="UTF-8"?>

"http://www.springframework.org/schema/beans"

       xmlns:context="http://www.springframework.org/schema/context"

       xmlns:mvc="http://www.springframework.org/schema/mvc"

       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

       xsi:schemaLocation="http://www.springframework.org/schema/aop

http://www.springframework.org/schema/aop/spring-aop-4.0.xsd

http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-4.0.xsd

http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context-4.0.xsd

http://www.springframework.org/schema/mvc

http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

 

    

    package="com.demo.test1" >

        

        "annotation" expression="org.springframework.stereotype.Controller"/>

    

    

    

 

    

    class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        "prefix" value="/" />

        "suffix" value=".jsp" />

        

        "order" value="1" />

    

六, web.xml配置

七,消息发送接口代码

(1)消息发送接口

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import javax.jms.Destination;

 

public interface ProducerService {

 

    void sendMessage(Destination destination, final String msg,final int i);

 

}

(2)消息发送接口实现类

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import com.demo.test1.activemq.service.ProducerService;

import org.springframework.jms.core.JmsTemplate;

import org.springframework.jms.core.MessageCreator;

import org.springframework.stereotype.Service;

 

import javax.annotation.Resource;

import javax.jms.*;

 

@Service

public class ProducerServiceImpl implements ProducerService {

 

    @Resource(name="jmsTemplate")

    private JmsTemplate jmsTemplate;

 

    @Override

    public void sendMessage(Destination destination, final String msg, final int i) {

        System.out.println(Thread.currentThread().getName()+" 向队列"+destination.toString()+"发送消息--------->"+msg);

 

        jmsTemplate.send(destination, new MessageCreator() {

            public Message createMessage(Session session) throws JMSException {

                TextMessage textMessage = session.createTextMessage(msg);

                textMessage.setIntProperty("con",i);

                return textMessage;

            }

        });

    }

 

   

}

八,消息监听代码

(1)queueMessageListener

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import javax.jms.*;

 

public class QueueMessageListener implements MessageListener {

 

    public void onMessage(Message message) {

        TextMessage tm = (TextMessage) message;

        try {

            System.out.println("MyListenner 1 监听到了文本消息:\t"

                    + tm.getText());

            //do something ...

        catch (JMSException e) {

            e.printStackTrace();

        }

    }

 

}

(2)queueMessageListener2

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import javax.jms.*;

 

public class QueueMessageListener2 implements MessageListener {

    @Override

    public void onMessage(Message message) {

        TextMessage tm = (TextMessage) message;

        try {

            System.out.println("MyListenner 2 监听到了文本消息:\t"

                    + tm.getText());

            //do something ...

        catch (JMSException e) {

            e.printStackTrace();

        }

    }

}

九,控制层

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import com.demo.test1.activemq.service.ConsumerService;

import com.demo.test1.activemq.service.ProducerService;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.ResponseBody;

 

import javax.annotation.Resource;

import javax.jms.Destination;

import javax.jms.TextMessage;

 

/**

 * Created by Administrator on 2017/5/3.

 */

@Controller

public class MessageController {

    private Logger logger = LoggerFactory.getLogger(MessageController.class);

    @Resource(name = "demoQueueDestination")

    private Destination destination;

 

    //队列消息生产者

    @Resource

    private ProducerService producer;

 

     @RequestMapping(value = "/SendMessage", method = RequestMethod.GET)

    @ResponseBody

    public void send(String msg,int i) {

        logger.info(Thread.currentThread().getName()+"------------开始发送消息");

        producer.sendMessage(destination,"消息序号:"+msg,i);

        logger.info(Thread.currentThread().getName()+"------------发送完毕");

    }

}

 十,启动active和tomcat

   启动结果:

总结:

   由于我们在监听器的配置中配置了selecter属性,因此MyListenner1,只接受con=14的消息,MyListenner2只接受con=15的消息。

    从中可以看到监听的消息队列名称是fist-queue,con值为14的消息,因此值不为14的消息则进入不了该监听消息中。

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