rabbitMQ第五篇:Spring集成RabbitMQ
Posted lpeiNet
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了rabbitMQ第五篇:Spring集成RabbitMQ相关的知识,希望对你有一定的参考价值。
前面几篇讲解了如何使用rabbitMq,这一篇主要讲解spring集成rabbitmq。
首先引入配置文件org.springframework.amqp,如下
<dependency> <groupId>org.springframework.amqp</groupId> <artifactId>spring-rabbit</artifactId> <version>1.6.0.RELEASE</version> </dependency>
一:配置消费者和生成者公共部分
<rabbit:connection-factory id="connectionFactory" host="${rabbit.hosts}" port="${rabbit.port}" username="${rabbit.username}" password="${rabbit.password}" virtual-host="${rabbit.virtualHost}" channel-cache-size="50"/> <rabbit:admin connection-factory="connectionFactory"/> <!--定义消息队列--> <rabbit:queue name="spittle.alert.queue.1" durable="true" auto-delete="false"/> <rabbit:queue name="spittle.alert.queue.2" durable="true" auto-delete="false"/> <rabbit:queue name="spittle.alert.queue.3" durable="true" auto-delete="false"/> <!--绑定队列--> <rabbit:fanout-exchange id="spittle.fanout" name="spittle.fanout" durable="true"> <rabbit:bindings> <rabbit:binding queue="spittle.alert.queue.1"></rabbit:binding> <rabbit:binding queue="spittle.alert.queue.2"></rabbit:binding> <rabbit:binding queue="spittle.alert.queue.3"></rabbit:binding> </rabbit:bindings> </rabbit:fanout-exchange>
二:配置生成者
<import resource="amqp-share.xml"/> <!--创建消息队列模板--> <rabbit:template id="rabbitTemplate" connection-factory="connectionFactory" exchange="spittle.fanout" message-converter="jsonMessageConverter"> </rabbit:template> <bean id="jsonMessageConverter" class="org.springframework.amqp.support.converter.JsonMessageConverter"></bean>
三:生产者程序
public class Spittle implements Serializable { private Long id; private Spitter spitter; private String message; private Date postedTime; public Spittle(Long id, Spitter spitter, String message, Date postedTime) { this.id = id; this.spitter = spitter; this.message = message; this.postedTime = postedTime; } public Long getId() { return this.id; } public String getMessage() { return this.message; } public Date getPostedTime() { return this.postedTime; } public Spitter getSpitter() { return this.spitter; } }
public class ProducerMain { public static void main(String[] args) throws Exception { ApplicationContext context = new ClassPathXmlApplicationContext("amqp/amqp-producer.xml"); AmqpTemplate template = (AmqpTemplate) context.getBean("rabbitTemplate"); for (int i = 0; i < 20; i++) { System.out.println("Sending message #" + i); Spittle spittle = new Spittle((long) i, null, "Hello world (" + i + ")", new Date()); template.convertAndSend(spittle); Thread.sleep(5000); } System.out.println("Done!"); } }
其中convertAndSend方法默认第一个参数是交换机名称,第二个参数是路由名称,第三个才是我们发送的数据,现在我们启动程序,效果如下
第四个:消费者程序
首先编写一个用于监听生产者发送信息的代码
/** * Created by Administrator on 2016/11/18. */ public class SpittleAlertHandler implements MessageListener { @Override public void onMessage(Message message) { try { String body=new String(message.getBody(),"UTF-8"); System.out.println(body); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } } }
一定要注意实现MessageListener,我们只需要获取message的body即可,通过json来转换我们需要的程序(比如我们可以发送一个map,map存放方法和实体,这样我们可以通过反射来调用不同的程序来运行)。
下面我们配置消费者
<import resource="amqp-share.xml"/> <rabbit:listener-container connection-factory="connectionFactory"> <rabbit:listener ref="spittleListener" method="onMessage" queues="spittle.alert.queue.1,spittle.alert.queue.3,spittle.alert.queue.2"/> </rabbit:listener-container> <bean id="spittleListener" class="com.lp.summary.rabbitmq.impl.SpittleAlertHandler"/>
其中spittleListener是监听的程序,method是执行的方法,queues是我们监听的队列,多个队列可以逗号隔开(因为我们采用的是分发,所以三个队列获取的消息是相同的,这里为了简便我放在一个监听程序中了,其实我们可以写三个消费者,每个消费者监听一个队列)
现在只需要启动程序即可运行
public class ConsumerMain { public static void main(String[] args) { ApplicationContext context = new ClassPathXmlApplicationContext("amqp/amqp-consumer.xml"); } }
当然direct跟上面的情况差不多,只不过这个是根据路由匹配,先把数据发送到交换机,然后绑定路由和队列,通过交换机id和路由来找到队列,下面是一些主要的配置
<rabbit:queue id="spring-test-queue1" durable="true" auto-delete="false" exclusive="false" name="spring-test-queue1"></rabbit:queue> <rabbit:queue name="spring-test-queue2" durable="true" auto-delete="false" exclusive="false"></rabbit:queue> <!--交换机定义--> <!--rabbit:direct-exchange:定义exchange模式为direct, 意思就是消息与一个特定的路由键完全匹配,才会转发。 rabbit:binding:设置消息queue匹配的key--> <rabbit:direct-exchange name="${rabbit.exchange.direct}" durable="true" auto-delete="false" id="${rabbit.exchange.direct}"> <rabbit:bindings> <rabbit:binding queue="spring-test-queue1" key="spring.test.queueKey1"/> <rabbit:binding queue="spring-test-queue2" key="spring.test.queueKey2"/> </rabbit:bindings> </rabbit:direct-exchange> <!--spring template声明--> <rabbit:template exchange="${rabbit.exchange.direct}" id="rabbitTemplate" connection-factory="connectionFactory" message-converter="jsonMessageConverter"></rabbit:template> <!--消息对象转成成json--> <bean id="jsonMessageConverter" class="org.springframework.amqp.support.converter.JsonMessageConverter"></bean>
下面是消费者监听配置
<rabbit:listener-container connection-factory="connectionFactory" acknowledge="auto"> <rabbit:listener queues="spring-test-queue1" method="onMessage" ref="queueListenter"></rabbit:listener> </rabbit:listener-container> <rabbit:listener-container connection-factory="connectionFactory" acknowledge="auto"> <rabbit:listener queues="spring-test-queue2" method="onMessage" ref="queueListenter"></rabbit:listener> </rabbit:listener-container>
下面是程序
public static void main(String[] args) { ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext-rabbitmq-producer.xml"); MQProducer mqProducer=(MQProducer) context.getBean("mqProducer"); mqProducer.sendDateToQueue("spring.test.queueKey1","Hello World spring.test.queueKey1"); mqProducer.sendDateToQueue("spring.test.queueKey2","Hello World spring.test.queueKey2"); }
实际情况可能需要我们去分离消费者和生成者的程序。当然spring还有负载均衡的配置,这里就不多介绍了。
以上是关于rabbitMQ第五篇:Spring集成RabbitMQ的主要内容,如果未能解决你的问题,请参考以下文章