java实现消息队列的两种方式(小结)

实现消息队列的两种方式

Apache ActiveMQ官方实例发送消息

直接在Apache官网http://activemq.apache.org/download-archives.html下载ActiveMQ源码

下载解压后拿到java代码实例

然后倒入IDE

如下：

请认真阅读readme.md文件，大致意思就是把项目打成两个jar包，然后启动服务，然后同时运行打的两个jar包，然后就能看到具体的调用信息。打jar包时直接利用maven打就行了，不用修改代码。

启动服务：

利用Spring消息模板发送消息

Spirng对Apache ActiveMQ提供了很好的支持

生成者代码：

package com.jms.service.impl;

import com.jms.service.ProducerService;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.stereotype.Service;

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

/**
 * 发送消息
 */
@Service
public class ProducerServiceImpl implements ProducerService {

 @Resource
 private JmsTemplate jmsTemplate;

 public void sendMessage(Destination destination, String msg) {
  System.out.println("向队列"+destination+"发送消息");
  jmsTemplate.convertAndSend(destination,msg);
 }

 public void sendMessage(String msg) {
  System.out.println("向队列"+jmsTemplate.getDefaultDestination().toString()+"发送消息");
  jmsTemplate.convertAndSend(msg);
 }
}

消费者代码：

package com.jms.service.impl;

import com.jms.service.CustomerService;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.stereotype.Service;

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

@Service
public class CustomerServiceImpl implements CustomerService {

 @Resource
 private JmsTemplate jmsTemplate;
 /**
  * 接收消息
  * @param destination
  */
 public void receive(Destination destination) {

  TextMessage textMessage = (TextMessage) jmsTemplate.receive(destination);
  try {
   System.out.println("从队列》"+destination.toString()+"成功获取消息》"+textMessage.getText());
  } catch (JMSException e) {
   e.printStackTrace();
  }

 }
}

Spring配置代码

<?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:mvc="http://www.springframework.org/schema/mvc"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans.xsd
  http://www.springframework.org/schema/context
  http://www.springframework.org/schema/context/spring-context.xsd
  http://www.springframework.org/schema/mvc
  http://www.springframework.org/schema/mvc/spring-mvc.xsd
  ">

 <!-- 启动包扫描功能，以便注册带有@Controller、@Service、@repository、@Component等注解的类成为spring的bean -->
 <context:component-scan base-package="com.jms.service"> </context:component-scan>

 <!-- 配置根视图 -->
 <!--<mvc:view-controller path="/" view-name="index"/>-->

 <!--启用注解-->
 <mvc:annotation-driven />

 <!-- 视图层配置 -->
 <!--<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">-->
  <!--<property name="prefix" value="/WEB-INF/view/"/>-->
  <!--<property name="suffix" value=".jsp"/>-->
 <!--</bean>-->

 <!-- 配置JMS连接工厂 -->
 <bean id="connectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
  <property name="brokerURL" value="tcp://localhost:61616" />
 </bean>

 <!-- 定义消息队列（Queue） -->
 <bean id="queueDestination" class="org.apache.activemq.command.ActiveMQQueue">
  <!-- 设置消息队列的名字 -->
  <constructor-arg>
   <value>queue1</value>
  </constructor-arg>
 </bean>

 <!-- 配置JMS模板（Queue），Spring提供的JMS工具类，它发送、接收消息。 -->
 <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
  <property name="connectionFactory" ref="connectionFactory" />
  <property name="defaultDestination" ref="queueDestination" />
  <property name="receiveTimeout" value="10000" />
 </bean>
</beans>

测试代码

package com.jsm.test;

import com.jms.service.CustomerService;
import com.jms.service.ProducerService;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import javax.jms.Destination;

/**
 * 消息队列测试类
 */
public class JmsTest {

 @Test
 public void producerTest(){

  ClassPathXmlApplicationContext springContext = new ClassPathXmlApplicationContext(new String[]{"classpath:spring-core.xml"});
  ProducerService producerService = (ProducerService)springContext.getBean("producerServiceImpl");
  CustomerService customerService = (CustomerService)springContext.getBean("customerServiceImpl");

  Destination destination = (Destination)springContext.getBean("queueDestination");
  producerService.sendMessage("测试消息队列");
  customerService.receive(destination);
 }
}

测试结果

代码地址

https://github.com/wahnn/SpringJMS
https://gitee.com/wahnn/SpringJMS

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