【ActiveMQ】2.spring Boot下使用ActiveMQ

在spring boot下使用ActiveMQ,需要一下几个条件

　　1.安装并启动了ActiveMQ,参考：http://www.cnblogs.com/sxdcgaq8080/p/7919489.html

　　2.搭建了spring boot项目，参考：http://www.cnblogs.com/sxdcgaq8080/p/7712874.html

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好了下面正式开始吧：

　　1.pom.xml文件添加maven依赖

　　　　<!--ActiveMQ-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-activemq</artifactId>
        </dependency>

　　2.application.properties配置文件配置

#activeMQ
#61616为消息代理接口 ，8161 为管理界面
spring.activemq.broker-url=tcp://localhost:61616
spring.activemq.user=admin
spring.activemq.password=admin
spring.activemq.in-memory=true
spring.activemq.pool.enabled=false

　　3.消息生产者Producer.java

package com.sxd.jms;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jms.core.JmsMessagingTemplate;
import org.springframework.stereotype.Service;

import javax.jms.Destination;

@Service("producer1")
public class Producer1 {

    @Autowired // 也可以注入JmsTemplate，JmsMessagingTemplate对JmsTemplate进行了封装
    private JmsMessagingTemplate jmsTemplate;
    // 发送消息，destination是发送到的队列，message是待发送的消息

    public void sendMessage(Destination destination, final String message){
        jmsTemplate.convertAndSend(destination, message);
    }

}

　　4.消息消费者Consumer.java

package com.sxd.jms;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jms.core.JmsMessagingTemplate;
import org.springframework.messaging.support.GenericMessage;
import org.springframework.stereotype.Component;

import javax.jms.JMSException;
import javax.jms.TextMessage;

@Component(value = "consumer1")
public class Consumer1 {

    @Autowired // 也可以注入JmsTemplate，JmsMessagingTemplate对JmsTemplate进行了封装
    private JmsMessagingTemplate jmsTemplate;

    public String receive(String queueName){
        GenericMessage textMessage =  (GenericMessage)jmsTemplate.receive(queueName);
        try {
            System.out.println("消费者1收到消息为："+textMessage.toString());
            return textMessage.toString();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return  null;
    }
}

　　5.控制层调用Controller【localhost:8080/log消息生产】【localhost:8080/log2消息消费】

package com.sxd.controller;

import com.sxd.jms.Consumer1;
import com.sxd.jms.Producer1;
import org.apache.activemq.command.ActiveMQQueue;
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.ResponseBody;

import javax.annotation.Resource;
import javax.jms.Destination;

@Controller
public class MainController {

    @Resource(name = "producer1")
    private Producer1 producer1;

    @Resource(name = "consumer1")
    private Consumer1 consumer1;

    @RequestMapping("/toLogin")
    public String hello(){
        return  "login";
    }

    Logger logger = LoggerFactory.getLogger(this.getClass());

    @RequestMapping("/log")
    @ResponseBody
    public void logTest(){
        Destination destination = new ActiveMQQueue("jms.queue");
        producer1.sendMessage(destination,"您有一条新消息，请注意查收！");
    }

    @RequestMapping("/log2")
    @ResponseBody
    public void log2Test(){
        String queueName = "jms.queue";
        consumer1.receive(queueName);
    }
}

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上面已经可以使用了，但是消息队列中对于消息的消费，如果能实现自动监听，自动处理那就更好了，给【消息消费者Consumer】修改一下

Consumer.java

package com.sxd.jms;

import org.springframework.jms.annotation.JmsListener;
import org.springframework.stereotype.Component;

@Component
public class Consumer1 {

    @JmsListener(destination = "jms.queue")
    public void receive(String msg){
        System.out.println(msg);
    }
}

消息生产者依旧 不变，然后Controller.java往队列中存放消息即可。

@RequestMapping("/log")
    @ResponseBody
    public void logTest(){
        Destination destination = new ActiveMQQueue("jms.queue");
        producer1.sendMessage(destination,"您有一条新消息，请注意查收！");
    }

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最后，如果想要实现双向消息传输呢？

什么意思呢，就是【消息消费者Consumer】处理完消息之后，可以带回给【消息生产者Producer 】一些有用的信息.

这样的话，Consumer.java就该这么写：

这样在监听到jms.queue消息队列中的消息之后，处理完成，将返回的消息放入reback.queue消息队列中

package com.sxd.jms;

import org.springframework.jms.annotation.JmsListener;
import org.springframework.messaging.handler.annotation.SendTo;
import org.springframework.stereotype.Component;

@Component
public class Consumer1 {

    @JmsListener(destination = "jms.queue")
    @SendTo("reback.queue")
    public String receive(String msg){
        System.out.println(msg);
        return "已经接收到消息，且处理完成！！";
    }
}

而Producer.java应该再多加一个监听，监听返回消息队列中的消息：

package com.sxd.jms;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jms.annotation.JmsListener;
import org.springframework.jms.core.JmsMessagingTemplate;
import org.springframework.stereotype.Service;

import javax.jms.Destination;

@Service("producer1")
public class Producer1 {

    @Autowired // 也可以注入JmsTemplate，JmsMessagingTemplate对JmsTemplate进行了封装
    private JmsMessagingTemplate jmsTemplate;
    // 发送消息，destination是发送到的队列，message是待发送的消息

    public void sendMessage(Destination destination, final String message){
        jmsTemplate.convertAndSend(destination, message);
    }

    @JmsListener(destination = "reback.queue")
    public void receiveConsumer(String msg){
        System.out.println(msg);

    }
}

最后Controller.java中访问测试一下：

 @RequestMapping("/log")
    @ResponseBody
    public void logTest(){
        Destination destination = new ActiveMQQueue("jms.queue");
        producer1.sendMessage(destination,"您有一条新消息，请注意查收！");
    }

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结束！！！