ActiveMQ与Spring / SpringBoot 整合(四)

1. 对 Spring 的整合
1.1 所需jar 包

<!--  activeMQ  jms 的支持  -->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-jms</artifactId>
    <version>4.3.23.RELEASE</version>
</dependency>
<dependency>    <!--  pool 池化包相关的支持  -->
  <groupId>org.apache.activemq</gro
  upId>
  <artifactId>activemq-pool</artifactId>
  <version>5.15.9</version>
</dependency>

<!--  aop 相关的支持  -->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-core</artifactId>
  <version>4.3.23.RELEASE</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
  <version>4.3.23.RELEASE</version>
</dependency>

1.2 写xml 文件   （applicationContext.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:context="http://camel.apache.org/schema/spring"
       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/aop
     http://www.springframework.org/schema/aop/spring-aop.xsd
     http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd">

    <context:commponent-scan base-package="com.at.activemq"/>
    <bean id="jmsFactory" class="org.apache.activemq.pool.PooledConnectionFactory"  destroy-method="stop">
        <property name="connectionFactory">
            <bean class="org.apache.activemq.ActiveMQConnectionFactory">
                <property name="brokerURL" value="tcp://192.168.17.3:61616"></property>
            </bean>
        </property>
        <property name="maxConnections" value="100"></property>
    </bean>

    <!-- 队列目的地 -->
    <bean id="destinationQueue" class="org.apache.activemq.command.ActiveMQQueue">
        <constructor-arg index="0" value="spring-active-queue"></constructor-arg>
    </bean>

    <!--  jms 的工具类 -->
    <bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
        <property name="connectionFactory" ref="jmsFactory"/>
        <property name="defaultDestination" ref="destinationQueue"/>
        <property name="messageConverter">
            <bean class="org.springframework.jms.support.converter.SimpleMessageConverter"/>
        </property>
    </bean>
</beans>

1.3  编写代码：

@Service
public class SpringMQ_producer {
    @Autowired
    private JmsTemplate jmsTemplate;
    public static void main(String[] args) {
        ApplicationContext  ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
        SpringMQ_producer producer = (SpringMQ_producer) ctx.getBean("springMQ_Producer");
        producer.jmsTemplate.send((session) -> {
            TextMessage textMessage = session.createTextMessage("spring 和 activemq 的整合");
            return textMessage;
        });
        System.out.println(" *** send task over ***");
    }
}

@Service
public class Spring_MQConsummer {
    @Autowired
    private JmsTemplate jmsTemplate;
    public static void main(String[] args) {
        ApplicationContext  ac = new ClassPathXmlApplicationContext("applicationContext.xml");
        Spring_MQConsummer  sm = (Spring_MQConsummer)ac.getBean("spring_MQConsummer");

        String s = (String) sm.jmsTemplate.receiveAndConvert();
        System.out.println(" *** 消费者消息"+s);
    }
}

并且可以在spring 中设置监听器，不用启动消费者，就可以自动监听到消息，并处理

2. Spring Boot 整合 ActiveMQ
2.1 建立boot 项目，配置 pom.xml 配置 application.yml 配置 bean
2.2 编写生产者 编写启动类 测试类

按键触发消息和定时发送消息的业务代码：

// 调用一次一个信息发出
public void produceMessage(){
    jmsMessagingTemplate.convertAndSend(queue,"****"+ UUID.randomUUID().toString().substring(0,6));
}

// 带定时投递的业务方法
@Scheduled(fixedDelay = 3000)    // 每3秒自动调用
public void produceMessageScheduled(){
    jmsMessagingTemplate.convertAndSend(queue,"** scheduled **"+ UUID.randomUUID().toString().substring(0,6));
    System.out.println("  produceMessage  send   ok   ");
}

对于消息消费者，在以前使用单独的监听器类，编写监听器代码，但是在spring boot 中，使用注解 JmsListener 即可：

@Component
public class Queue_consummer {

    @JmsListener(destination = "${myqueue}")     // 注解监听
    public void receive(TextMessage textMessage) throws  Exception{
        System.out.println(" ***  消费者收到消息  ***"+textMessage.getText());
    }
}

这些是之前（队列）消息发送者发送的消息

2.3 编写消费者项目

2.4  编写主题的消息生产者和消费者项目，运行demo

代码地址：https://github.com/elstic/ActiveMQ