快速上手MQ之activeMQ(3)--订阅者模式

上篇文章讲的是queue点对点模式,这篇讲下如何进行topic订阅模式

上篇用的spring是3的，有的老，会报错，所以我把spring升级为4的，pom.xml如下：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.cwh.activeMQ</groupId>  <artifactId>activeMQ</artifactId>  <version>0.0.1-SNAPSHOT</version>  <packaging>war</packaging>  <properties><junit.version>4.10</junit.version><spring.version>4.1.6.RELEASE</spring.version><mysql.version>5.1.22</mysql.version><mybatis.version>3.2.7</mybatis.version><mybatis-spring.version>1.2.2</mybatis-spring.version><aspectjweaver.version>1.8.1</aspectjweaver.version><jackson-core-asl.version>1.9.2</jackson-core-asl.version><jackson-mapper-asl.version>1.9.2</jackson-mapper-asl.version><javax.servlet-api.version>3.1.0</javax.servlet-api.version><log4j.version>1.2.16</log4j.version><commons-dbcp.version>1.4</commons-dbcp.version><fastjson.version>1.1.37</fastjson.version><jstl.version>1.1.0</jstl.version><standard.version>1.1.0</standard.version><commons-configuration.version>1.6</commons-configuration.version><commons-fileupload.version>1.2.1</commons-fileupload.version></properties><!-- <dependencyManagement> --><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>${junit.version}</version><scope>test</scope></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>${spring.version}</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>${mybatis.version}</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>${mybatis-spring.version}</version></dependency><dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>${aspectjweaver.version}</version></dependency><dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-core-asl</artifactId><version>${jackson-core-asl.version}</version></dependency><dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-mapper-asl</artifactId><version>${jackson-mapper-asl.version}</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>${javax.servlet-api.version}</version><scope>provided</scope></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>${log4j.version}</version></dependency><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>${commons-fileupload.version}</version></dependency><dependency><groupId>commons-dbcp</groupId>    <artifactId>commons-dbcp</artifactId><version>${commons-dbcp.version}</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>${fastjson.version}</version></dependency><dependency><groupId>jstl</groupId><artifactId>jstl</artifactId><version>${jstl.version}</version></dependency><dependency><groupId>taglibs</groupId><artifactId>standard</artifactId><version>${standard.version}</version></dependency><dependency><groupId>commons-configuration</groupId><artifactId>commons-configuration</artifactId><version>${commons-configuration.version}</version></dependency><!-- 以下是activeMQ所需的包 -->          <dependency>              <groupId>org.apache.xbean</groupId>              <artifactId>xbean-spring</artifactId>              <version>3.16</version>          </dependency>            <dependency>              <groupId>com.thoughtworks.xstream</groupId>              <artifactId>xstream</artifactId>              <version>1.3.1</version>          </dependency><dependency>                  <groupId>org.springframework</groupId>                  <artifactId>spring-jms</artifactId>                  <version>${spring.version}</version>              </dependency>              <dependency>                <groupId>org.apache.activemq</groupId>                <artifactId>activemq-all</artifactId>                <version>5.9.0</version>              </dependency>  </dependencies><!-- </dependencyManagement> -->  <build>  <plugins>  <plugin>  <artifactId>maven-war-plugin</artifactId>  <configuration>  <version>3.0</version>  </configuration>  </plugin>  </plugins>  </build></project>

下面进行订阅者模式开发

1、首先对activeMQ.xml这个文件进行修改

添加：

 <!-- 定义订阅模式（topic） -->     <bean id="demoTopicDestination" class="org.apache.activemq.command.ActiveMQTopic">         <!-- 设置消息队列的名字 -->         <constructor-arg>             <value>activeMQ+spring(topic)</value>         </constructor-arg>     </bean>

修改：

 <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">         <property name="connectionFactory" ref="connectionFactory" />         <property name="defaultDestination" ref="demoQueueDestination" />         <property name="receiveTimeout" value="10000" />         <!-- true是topic，false是queue，默认是false，此处显示写出false -->         <property name="pubSubDomain" value="true" />     </bean>

也就是把<property name="pubSubDomain" value="true" />  value设置为true

2、添加配置文件topic_comsumer.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd">    <!-- 配置JMS连接工厂 -->    <bean id="consumerConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">        <property name="brokerURL" value="failover:(tcp://127.0.0.1:61616)" />        <property name="useAsyncSend" value="true" />        <property name="clientID" value="consumerClienctConnect" />    </bean>    <!-- 定义消息Destination -->    <bean id="topicDestination"  class="org.apache.activemq.command.ActiveMQTopic">        <constructor-arg value="activeMQ+spring(topic)"/>    </bean>    <!-- 配置消息消费监听者 -->    <bean id="consumerMessageListener" class="com.cwh.activeMQ.listener.ConsumerMessageListener" />    <!-- 消息订阅客户端1 -->    <bean id="consumerListenerClient1" class="org.springframework.jms.listener.DefaultMessageListenerContainer">        <property name="connectionFactory" ref="consumerConnectionFactory" />        <!-- 开启订阅模式 -->        <property name="pubSubDomain" value="true"/>        <property name="destination" ref="topicDestination" />        <property name="subscriptionDurable" value="true"/>        <!---这里是设置接收客户端的ID，在持久化时，但这个客户端不在线时，消息就存在数据库里，直到被这个ID的客户端消费掉-->        <property name="clientId" value="consumerClient1"/>        <property name="messageListener" ref="consumerMessageListener" />        <!-- 消息应答方式             Session.AUTO_ACKNOWLEDGE  消息自动签收             Session.CLIENT_ACKNOWLEDGE  客户端调用acknowledge方法手动签收             Session.DUPS_OK_ACKNOWLEDGE 不必必须签收，消息可能会重复发送        -->        <property name="sessionAcknowledgeMode" value="1"/>    </bean>    <!-- 消息订阅客户端2 -->    <bean id="consumerListenerClient2" class="org.springframework.jms.listener.DefaultMessageListenerContainer">        <property name="connectionFactory" ref="consumerConnectionFactory" />        <!-- 开启订阅模式 -->        <property name="pubSubDomain" value="true"/>        <property name="destination" ref="topicDestination" />        <property name="subscriptionDurable" value="true"/>        <!---这里是设置接收客户端的ID，在持久化时，但这个客户端不在线时，消息就存在数据库里，直到被这个ID的客户端消费掉-->        <property name="clientId" value="consumerClient2"/>        <property name="messageListener" ref="consumerMessageListener" />        <!-- 消息应答方式             Session.AUTO_ACKNOWLEDGE  消息自动签收             Session.CLIENT_ACKNOWLEDGE  客户端调用acknowledge方法手动签收             Session.DUPS_OK_ACKNOWLEDGE 不必必须签收，消息可能会重复发送        -->        <property name="sessionAcknowledgeMode" value="1"/>    </bean></beans>

也就是弄了两个消息订阅者

3、添加消费者监听器

package com.cwh.activeMQ.listener;import org.apache.commons.lang.builder.ToStringBuilder;import javax.jms.JMSException;import javax.jms.Message;import javax.jms.MessageListener;import javax.jms.TextMessage;public class ConsumerMessageListener implements MessageListener{    public void onMessage(Message message) {        TextMessage tm = (TextMessage) message;        try {            System.out.println("---------消息消费---------");            System.out.println("消息内容:\t" + tm.getText());            System.out.println("消息ID:\t" + tm.getJMSMessageID());            System.out.println("消息Destination:\t" + tm.getJMSDestination());            System.out.println("---------更多信息---------");            System.out.println(ToStringBuilder.reflectionToString(tm));            System.out.println("-------------------------");        } catch (JMSException e) {            e.printStackTrace();        }    }}

4、修改activeMQ_main.jsp
添加一个发布topic的输入框

<form action="${ctxPath }activeMQ/onsendtotopic" method="post">         MessageText:<textarea name="message">${time}</textarea>         <input type="submit" value="topic">     </form>

5、部署项目到tomcat

访问http://localhost:8080/activeMQ/activeMQ/main

点击topic发布后，消费者监听器会监听到消息，查看控制台打印如下，打印出有两个订阅者

ok!这样也就完成了topic订阅者模式的简单例子