• spring整合activemq 发送实体类对象


    首先是maven依赖:

        <!--  activemq-->
         <dependency>
          <groupId>javax.jms</groupId>
          <artifactId>jms</artifactId>
          <version>1.1</version>
          </dependency>
          <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jms</artifactId>
          <version>4.3.18.RELEASE</version>
          </dependency>
          <dependency>
          <groupId>org.apache.activemq</groupId>
          <artifactId>activemq-core</artifactId>
          <version>5.5.0</version>
         </dependency>
          <dependency>
          <groupId>org.apache.xbean</groupId>
          <artifactId>xbean-spring</artifactId>
          <version>4.5</version>
         </dependency>
         <dependency>
          <groupId>org.apache.activemq</groupId>
          <artifactId>activemq-all</artifactId>
          <version>5.9.0</version>
         </dependency>
         <dependency>
          <groupId>org.apache.activemq</groupId>
          <artifactId>activemq-pool</artifactId>
          <version>5.7.0</version>
         </dependency>

    接下来配置spring-context-activemq.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <beans
            xmlns="http://www.springframework.org/schema/beans"
            xmlns:amq="http://activemq.apache.org/schema/core"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xmlns:p="http://www.springframework.org/schema/p"
            xmlns:context="http://www.springframework.org/schema/context"
            xmlns:jms="http://www.springframework.org/schema/jms"
            xsi:schemaLocation="http://www.springframework.org/schema/beans
             http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
             http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd
             http://www.springframework.org/schema/context
             http://www.springframework.org/schema/context/spring-context.xsd
             http://www.springframework.org/schema/jms http://www.springframework.org/schema/jms/spring-jms-3.0.xsd"
    >
     <!--  实例化mq链接工厂(原始)-->
        <amq:connectionFactory brokerURL="tcp://localhost:61616" userName="admin" password="admin" id="amqConnectionFactory"></amq:connectionFactory>
        <!--  实例化mq的链接池-->
        <bean id="pooledConnectionFactory" class="org.apache.activemq.pool.PooledConnectionFactory">
            <property name="connectionFactory" ref="amqConnectionFactory"></property>
            <property name="maxConnections" value="10"></property>
        </bean>
        <!-- 实例化spring提供的链接,将mq提供的原始连接进行封装为spring提供的连接工厂 -->
        <bean id="connectionFactory" class="org.springframework.jms.connection.CachingConnectionFactory">
            <property name="sessionCacheSize" value="3"></property>
            <property name="targetConnectionFactory" ref="amqConnectionFactory"></property>
        </bean>
        <!-- 实例化jmsTemplate对象 (不与某种产品关联 生产者) 与Spring 提供的工厂结合即可 -->
        <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
        <!--  注入spring提供的连接工厂对象-->
            <property name="connectionFactory" ref="connectionFactory"></property>
            <!-- 默认点对点 -->
            <!--  <property name="pubSubDomain"></property>-->
            <!-- 指定默认队列名称 -->
            <property name="defaultDestinationName" value="notice-reward-message" ></property>
        </bean>
        
        <!-- 注册监听容器(消费者)
        acknowledge:消息确认机制
        container-type:容器类型 default|simple
        simple:SimpleMessageListenerContainer 是一个用于异步消息的监听器容器,且支持事务
        destination-type:目的地类型,使用队列作为目的地
        connection-factory:连接工厂,spring-jms使用的连接工厂,必须是spring自主创建的
        不能使用第三方工具创建的工厂如:ActiveMQConnectionFactory
         -->
        <jms:listener-container acknowledge="auto" destination-type="queue" container-type="default" connection-factory="connectionFactory">
            <jms:listener destination="notice-reward-message" ref="rewardConsumerListener"/>
        </jms:listener-container>
        
        
    </beans>
        (1)由于使用ActiveMQ官方原生的代码来发送MQ消息的代码比较复杂,因此采用JmsTemplate来发送MQ消息
        (2)由于JmsTemplate发送MQ消息时每次都要创建Connection和Session。因此引入Spring提供的CachingConnectionFactory,起到类似于数据库连接池的效果
        (3)注册JmsTemplate时,pubSubDomain这个属性的值要特别注意。默认值是false,也就是说默认只是支持queue模式,不支持topic模式。但是,如果将它改为true,则不支持queue模式。因此如果项目需要同时支持queue和topic模式,那么需要注册2个JmsTemplate,同时监听容器(<jms:listener-container>)也需要注册2个
     
    接下来是生产者代码:
    //@Scheduled(cron = "0 */1 * * * ?") //每分钟执行一次
        //每天凌晨3点触发
        @Scheduled(cron = "0 0 3 * * ?")
        @Transactional(readOnly = false)
        public void rewardMissionHandle() {
              this.sendMessage(new MoneystreamRecord());
                    
            
        }
    
        private void sendMessage(MoneystreamRecord moneystreamRecord) {
        // TODO Auto-generated method stub
            jmsTemplate.send(new MessageCreator() {
                @Override
                public Message createMessage(Session session) throws JMSException {
                    System.out.println("将Record发送到:====》mq中");
                    // TODO Auto-generated method stub
                    ObjectMessage message = session.createObjectMessage(moneystreamRecord);
                    System.out.println(message.toString());
                    return message;
                }
            });
        
    }

    最后是消费者:

    @Component
    public class RewardConsumerListener implements MessageListener{
    
        @Autowired
        @Lazy(true)
        private UserService userService;
        @Override
        public void onMessage(Message message) {
            // TODO Auto-generated method stub
            try {
    
                ActiveMQObjectMessage  m  = (ActiveMQObjectMessage) message;
                MoneystreamRecord r = (MoneystreamRecord) m.getObject();
                userService.push(r.getUser().getId(), "您的奖励金已发放,金额为:" + r.getChangeMoney() + "元。");
    
            } catch (JMSException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    
    }
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  • 原文地址:https://www.cnblogs.com/fengwenzhee/p/14251411.html
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