通配符介绍:
一般情况下,我们使用层次结构的方式来组织队列,比如A.B.C.D,这样便于归类和管理。
我们也可以使用通配符来配置或是操作多个队列。
通配符有三个:
- . 用来分隔路径;
- * 用来匹配路径中的一节
- > 用来匹配任意节的路径
如果你发送了这样的一个主题:" rugby.>.", 这个消息仅会发送到命名为“rugby.>.”的主题,并不是所有以rugby开头的的主题。
这里有一种 方法,使消息生产者能将一条。
消息发送到多个目的地。通过使用 composite destination。《本小节暂不讲解》
程序概要:
1. 消费者:异步接收,实现 MessageListener类;
2.从消息中获取 目的地名称: message.getJMSDestination().toString();
3.消费模式:发布/订阅模式;
4.目的地名称:采用通配符形式:on3000.topic.*;
![](http://images0.cnblogs.com/blog/731047/201504/301427465366682.jpg)
环境:
1.JmsMessageListener.java
2.Publisher.java
3.Test.java
4.applicationContext-2.xml
![](http://images0.cnblogs.com/blog/731047/201504/301427483498096.png)
所使用的jar包
![](//images0.cnblogs.com/blog/731047/201504/301427496301138.png)
![](http://images0.cnblogs.com/blog/731047/201504/301427496301138.png)
activemq-all-5.8.0.jar
源文件:
applicationContext-2.xml
![](//images0.cnblogs.com/blog/731047/201504/301427511306879.png)
activemq-all-5.8.0.source.jar
commons-logging-1.1.1.jar
spring-asm-3.1.2.RELEASE.jar
spring-beans-3.1.2.RELEASE.jar
spring-context-3.1.2.RELEASE.jar
spring-context-support-3.1.2.RELEASE.jar
spring-core-3.1.2.RELEASE.jar
spring-expression-3.1.2.RELEASE.jar
spring-jms-3.1.2.RELEASE.jar
spring-tx-3.1.2.RELEASE.jar
源文件:
JmsMessageListener.java 异步接收
package com.nari.spring.jms2;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;
public class JmsMessageListener implements MessageListener {
public void onMessage(Message message) {
System.out.println("消息全部内容:" + message.toString());
try {
System.out.println("消息主题:" + message.getJMSDestination().toString());
} catch (JMSException e1) {
e1.printStackTrace();
}
TextMessage tm = (TextMessage) message;
try {
System.out.println("消息体:" + tm.getText());
} catch (JMSException e) {
e.printStackTrace();
}
}
}
Publisher.java
package com.nari.spring.jms2;
import java.util.Scanner;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.command.ActiveMQTopic;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.jms.core.MessageCreator;
public class Publisher {
//下面两个field,在applicationContext-*.xml配置
private JmsTemplate template;
private Destination destination;
public void sendMessage() {
long keyValue = 302001011;
boolean sendMsgFlag = true;
int addIndex = 0;
System.out.println("输入主题内容,输入N停止发送消息:");
while (sendMsgFlag) {
// 从终端输入信息
Scanner cin = new Scanner(System.in);
String text = cin.nextLine();
if (text.equals("N")) {
sendMsgFlag = false;
}
// 目的地地址为:topic://on3000.topic.*
int startIndex = destination.toString().indexOf("//");
int endIndex = destination.toString().indexOf("*");
// 拼接新的主题:类似 on3000.topic.30200101112
String subTopicDestination = destination.toString().substring(
startIndex + 2, endIndex)
+ Long.toString(keyValue + addIndex);
//发送消息
jmsTemplateSend(subTopicDestination, text);
addIndex++;
}
}
/**
* 向指定主题发送指定消息
*
* @param destinationString
* :主题
* @param strMessage
* :消息内容
*/
protected void jmsTemplateSend(String destinationString,
final String strMessage) {
ActiveMQTopic topicDestination = new ActiveMQTopic(destinationString);
template.send(topicDestination, new MessageCreator() {
public Message createMessage(Session session) throws JMSException {
TextMessage message = session.createTextMessage();
message.setText(strMessage);
return message;
}
});
}
public JmsTemplate getJmsTemplate() {
return template;
}
public void setJmsTemplate(JmsTemplate template) {
this.template = template;
}
public Destination getDestination() {
return destination;
}
public void setDestination(Destination destination) {
this.destination = destination;
}
}
Test.java
package com.nari.spring.jms2;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Test {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext(
"applicationContext-2.xml");
// applicationContext-*.xml初始化时,貌似会自动开启subscribe,下面两行注不注释掉都可以
// DefaultMessageListenerContainer subscribe = (DefaultMessageListenerContainer)context.getBean("consumer");
// subscribe.start();
Publisher publisher = (Publisher) context.getBean("publisher");
publisher.sendMessage();
}
}
配置文件:
applicationContext-2.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" xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<!--创建连接工厂 -->
<bean id="connectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL" value="tcp://localhost:61616" />
</bean>
<!-- 声明目标,ActiveMQQueue或ActiveMQTopic -->
<bean id="topicDestination" class="org.apache.activemq.command.ActiveMQTopic"
autowire="constructor">
<!-- 通配符,匹配多个主题 -->
<constructor-arg value="on3000.topic.*" />
</bean>
<!-- 创建JMS发送信息的模板的对象 -->
<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
<property name="connectionFactory" ref="connectionFactory" />
<property name="defaultDestination" ref="topicDestination" />
<property name="receiveTimeout" value="6000" />
</bean>
<!-- 生成者 -->
<bean id="publisher" class="com.nari.spring.jms2.Publisher">
<property name="jmsTemplate" ref="jmsTemplate" />
<property name="destination" ref="topicDestination" />
</bean>
<!-- 消息监听接口 -->
<bean id="jmsMessageListener" class="com.nari.spring.jms2.JmsMessageListener">
</bean>
<!-- 消费者,通过消息侦听器实现 -->
<bean id="consumer"
class="org.springframework.jms.listener.DefaultMessageListenerContainer">
<property name="connectionFactory" ref="connectionFactory" />
<property name="destination" ref="topicDestination" />
<property name="messageListener" ref="jmsMessageListener" />
</bean>
</beans>
运行结果:
![](http://images0.cnblogs.com/blog/731047/201504/301427511306879.png)
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