ActiveMQ_Topic队列(三)

时间：2023-03-09 01:15:01
ActiveMQ_Topic队列(三)
一、本文章包含的内容
1、列举了ActiveMQ中通过Topic方式发送、消费队列的代码（监听者有两个，分别是topicMessageListener1、topicMessageListener2）
2、spring+activemq方式
二、配置信息
1、activemq的pom.xml信息
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<!--activemq  Begin-->
       <dependency>
           <groupId>org.springframework</groupId>
           <artifactId>spring-jms</artifactId>
           <version>${spring.version}</version>
       </dependency>
       <!-- <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-messaging</artifactId>
            <version>${spring.version}</version>
        </dependency>-->
       <dependency>
           <groupId>org.apache.activemq</groupId>
           <artifactId>activemq-all</artifactId>
           <version>5.14.0</version>
       </dependency>
       <!--activemq  End-->

2、activemq的配置文件：spring-jms.xml

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<!-- 启用spring mvc 注解 -->
   <context:component-scan base-package="org.soa.test.activemq"/>
   <!-- 配置JMS连接工厂 -->
   <bean id="connectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
       <property name="brokerURL" value="failover:(tcp://192.168.146.129:61616)" />
       <!--解决接收消息抛出异常：javax.jms.JMSException: Failed to build body from content. Serializable class not available to broke-->
       <property name="trustAllPackages" value="true"/>
       <!-- 是否异步发送 -->
       <property name="useAsyncSend" value="true" />
   </bean>
   <!--  Topic模式  Begin -->
   <!-- 定义消息队列名称 -->
   <bean id="topicDestination" class="org.apache.activemq.command.ActiveMQTopic">
       <constructor-arg>
           <value>topic1</value>
       </constructor-arg>
   </bean>
   <!-- 配置JMS模板，Spring提供的JMS工具类，它发送、接收消息。（Topic） -->
   <bean id="jmsTemplateTopic" class="org.springframework.jms.core.JmsTemplate">
       <property name="connectionFactory" ref="connectionFactory" />
       <property name="defaultDestination" ref="topicDestination" />
       <!-- 订阅发布模式 -->
       <property name="pubSubDomain" value="true"/>
   </bean>
   <!-- 消息主题监听者 和 主题监听容器 可以配置多个，即多个订阅者 -->
   <!-- 消息主题监听者(Topic) -->
   <bean id="topicMessageListener1" class="org.soa.test.activemq.topics.TopicMessageListener1" />
   <bean id="topicMessageListener2" class="org.soa.test.activemq.topics.TopicMessageListener2" />
   <!-- Topic接收监听（Topic）Topic的第1个监听者 -->
   <bean id="topicJmsContainer"
         class="org.springframework.jms.listener.DefaultMessageListenerContainer">
       <property name="connectionFactory" ref="connectionFactory" />
       <property name="destination" ref="topicDestination" />
       <property name="messageListener" ref="topicMessageListener1" />
   </bean>
   <!-- Topic接收监听（Topic）Topic的第2个监听者-->
   <bean id="topicJmsContainer2"
         class="org.springframework.jms.listener.DefaultMessageListenerContainer">
       <property name="connectionFactory" ref="connectionFactory" />
       <property name="destination" ref="topicDestination" />
       <property name="messageListener" ref="topicMessageListener2" />
   </bean>
   <!--  Topic模式  End -->

三、队列发送端及测试程序

1、发送代码

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package org.soa.test.activemq.topics;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.jms.core.MessageCreator;
import org.springframework.stereotype.Component;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;
/**
 * Created by JamesC on 16-9-22.
 */
@Component
public class TopicProvider {
    @Autowired
    @Qualifier("jmsTemplateTopic")
    private JmsTemplate topicJmsTemplate;
    /**
     * 向指定的topic发布消息
     *
     * @param topic
     * @param msg
     */
    public void publish(final Destination topic, final String msg) {
        topicJmsTemplate.send(topic, new MessageCreator() {
            public Message createMessage(Session session) throws JMSException {
                System.out.println("topic name 是" + topic.toString() + "，发布消息内容为:\t" + msg);
                return session.createTextMessage(msg);
            }
        });
    }
}

2、监听代码

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//TopicMessageListener1
package org.soa.test.activemq.topics;
import org.springframework.stereotype.Component;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;
/**
 * Created by JamesC on 16-9-22.
 */
@Component
public class TopicMessageListener1 implements MessageListener {
    public void onMessage(Message message) {
        TextMessage tm = (TextMessage) message;
        try {
            System.out.println("TopicMessageListener_1 \t" + tm.getText());
        } catch (JMSException e) {
            e.printStackTrace();
        }
    }
}
//TopicMessageListener2
package org.soa.test.activemq.topics;
import org.springframework.stereotype.Component;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;
/**
 * Created by JamesC on 16-9-22.
 */
@Component
public class TopicMessageListener2 implements MessageListener {
    public void onMessage(Message message) {
        TextMessage tm = (TextMessage) message;
        try {
            System.out.println("TopicMessageListener_2 \t" + tm.getText());
        } catch (JMSException e) {
            e.printStackTrace();
        }
    }
}

3、测试程序

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package org.soa.test.activemq.topics;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTopic;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import javax.jms.Destination;
/**
 * Created by JamesC on 16-9-22.
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/spring-jms.xml")
public class TopicTest {
    @Autowired
    private Destination queueDestination;
    @Autowired
    private TopicProvider provider;
    //向默认Topic发消息
    @Test
    public void send() {
        //坑爹的是：这里不要用ActiveMQQueue，会默认按Queue发送；要使用ActiveMQTopic，按Topic发送
        //ActiveMQQueue des = new ActiveMQQueue("topic1");
        ActiveMQTopic des = new ActiveMQTopic("topic1");
        provider.publish(des,"topic消息示例");
    }
}

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