RabbitMQ学习总结（7）——Spring整合RabbitMQ实例

1.RabbitMQ简介

RabbitMQ是流行的开源消息队列系统，用erlang语言开发。RabbitMQ是AMQP（高级消息队列协议）的标准实现。

官网：http://www.rabbitmq.com/

2.Spring集成RabbitMQ

2.1 maven配置

//pom.xml
<dependency>
<groupId>com.rabbitmq</groupId>
<artifactId>amqp-client</artifactId>
<version>3.5.1</version>
</dependency>
<dependency>
<groupId>org.springframework.amqp</groupId>
<artifactId>spring-rabbit</artifactId>
<version>1.4.5.RELEASE</version>
</dependency>

2.2 rabbmitmq配置文件

//rabbitmq-config.properties
mq.host=127.0.0.1
mq.username=test
mq.password=123456
mq.port=5672
mq.vhost=testmq

2.3 Spring配置

//application-mq.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:rabbit="http://www.springframework.org/schema/rabbit"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/rabbit http://www.springframework.org/schema/rabbit/spring-rabbit-1.0.xsd" >

<description>rabbitmq 连接服务配置</description>
<!-- 连接配置 -->
<rabbit:connection-factory id="connectionFactory" host="${mq.host}" username="${mq.username}" password="${mq.password}" port="${mq.port}"  virtual-host="${mq.vhost}"/>
<rabbit:admin connection-factory="connectionFactory"/>

<!-- spring template声明-->
<rabbit:template exchange="amqpExchange" id="amqpTemplate"  connection-factory="connectionFactory"  message-converter="jsonMessageConverter" />

<!-- 消息对象json转换类 -->
<bean id="jsonMessageConverter" class="org.springframework.amqp.support.converter.Jackson2JsonMessageConverter" />
</beans>

3. 在Spring中使用RabbitMQ

3.1 申明一个消息队列Queue

//application-mq.xml
<rabbit:queue id="test_queue_key" name="test_queue_key" durable="true" auto-delete="false" exclusive="false" />

3.2 交换机定义

//application-mq.xml
<rabbit:direct-exchange name="test-mq-exchange" durable="true" auto-delete="false" id="test-mq-exchange">
<rabbit:bindings>
<rabbit:binding queue="test_queue_key" key="test_queue_key"/>
</rabbit:bindings>
</rabbit:direct-exchange>

3.3 发送消息Producer

//MQProducer.java
public interface MQProducer {
/**
* 发送消息到指定队列
* @param queueKey
* @param object
*/
public void sendDataToQueue(String queueKey, Object object);
}

@Service
public class MQProducerImpl implements MQProducer {
@Autowired
private AmqpTemplate amqpTemplate;

private final static Logger LOGGER = Logger.getLogger(MQProducerImpl.class);
/* (non-Javadoc)
* @see com.stnts.tita.rm.api.mq.MQProducer#sendDataToQueue(java.lang.String, java.lang.Object)
*/
@Override
public void sendDataToQueue(String queueKey, Object object) {
try {
amqpTemplate.convertAndSend(queueKey, object);
} catch (Exception e) {
LOGGER.error(e);
}

}
}

3.4 异步接收消息Consumer

定义监听器

//QueueListenter.java
@Component
public class QueueListenter implements MessageListener {

@Override
public void onMessage(Message msg) {
try{
System.out.print(msg.toString());
}catch(Exception e){
e.printStackTrace();
}
}

}

监听配置

//application-mq.xml
<rabbit:listener-container connection-factory="connectionFactory" acknowledge="auto">
<rabbit:listener queues="test_queue" ref="queueListenter"/>
</rabbit:listener-container>

3.5 JUnit测试

//TestQueue.java
@RunWith(value = SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {
"classpath:/ApplicationContext/ApplicationContext-mq.xml"})

public class TestQueue{
@Autowired
MQProducer mqProducer;

final String queue_key = "test_queue";

@Test
public void send(){
Map<String,Object> msg = new HashMap()<>;
msg.put("data","hello,rabbmitmq!");
mqProducer.sendDataToQueue(query_key,msg);
}
}

运行测试程序，Run with JUnit，会发送一条消息到test_queue，监听器监听到消息后，打印出消息。

至此，已经完成了Spring和RabbmitMQ集成，配置，和使用。