使用Spring集成在Exchange中动态选择RabbitMq队列

Question

从生产者那里我必须发送消息到RabbitMQ交易所。 该消息将包含特定的属性，例如队列名称，基于此属性，我必须动态地确定队列以发送此消息。[从交换绑定到发送此特定消息的队列]。

有什么方法可以使用spring集成来拦截到达RabbitMQ Exchange的消息，目前，我有以下spring集成配置文件。

我不知道如何创建一个bean来获取Exchange消息并将消息路由到smsQueue，emailQueue等队列。

感谢您的建议和答复。

http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/rabbit http://www.springframework.org/schema/rabbit/spring-rabbit- 1.0.xsd

http://www.springframework.org/schema/integration         
http://www.springframework.org/schema/integration/spring-integration.xsd      
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/integration/amqp
http://www.springframework.org/schema/integration/amqp/spring-integration-amqp.xsd
">

<context:annotation-config></context:annotation-config>
<context:component-scan base-package="com.rabbit"></context:component-scan>

<rabbit:connection-factory id="connectionFactory"
    host="localhost" username="guest" password="guest" />   
<rabbit:admin connection-factory="connectionFactory" />
<rabbit:template id="exchnageTemplate"
    connection-factory="connectionFactory" exchange="COMMUNICATION-EXCHANGE" />

<rabbit:queue id="smsQueue" auto-delete="true" durable="false" />
<rabbit:queue id="emailQueue" auto-delete="true" durable="false" />
<rabbit:queue id="dvbQueue" auto-delete="true" durable="false" />
<rabbit:queue id="pbxQueue" auto-delete="true" durable="false" />
<rabbit:queue id="medsensorQueue" auto-delete="true"
    durable="false" />


<int:gateway id="gateway" service-interface="com.rabbit.mq.ProducerGatewayInterface"
    default-request-channel="producerChannel" />

<int:channel id="producerChannel" />
<int:channel id="errorChannel" />

<bean id="communicationInterface" class="com.rabbit.mq.CommunicationInterface" />

<amqp:outbound-channel-adapter channel="producerChannel"
    amqp-template="exchnageTemplate" exchange-name="COMMUNICATION-EXCHANGE">
    <int:service-activator input-channel="input"
        ref="communicationInterface" method="optimalRoutingOfMessage" />
</amqp:outbound-channel-adapter>

Answer 1

使用RabbitMQ（AMQP），您不会发送到队列，而是使用路由密钥发送到交换机，绑定决定了哪个队列接收消息。

<rabbit:direct-exchange name="si.test.exchange">
    <rabbit:bindings>
        <rabbit:binding queue="si_test_queue" key="si.test.binding" />
    </rabbit:bindings>
</rabbit:direct-exchange>

<int-amqp:outbound-channel-adapter
    channel="toRabbit" amqp-template="amqpTemplate" exchange-name="si.test.exchange"
    routing-key="si.test.binding" />

除了routing-key您还可以将routing-key-expression与headers['foo']或@someBean.determineRoutingKeyFor(payload) 。