Question

问题陈述：

Spring amqp-outbound网关从另一个线程产生回复（与jms-outbound网关一样，具有不同的队列，使用相关键关联请求/响应）。

无法将此消息与此示例相关联。

Spring集成

    <int:gateway id="outboundGateway" service-interface="com.amqp.outbound.gateway.OutboundGateway"     
                        default-reply-channel="defaultReplyChannel" >
        <int:method name="process"   request-channel="inboundRequestChannel"/>
    </int:gateway>

    <int:channel id="defaultReplyChannel"/>
    <int:channel id="inboundRequestChannel"/>
    <int:channel id="enrichedInboundRequestChannel"/>
    <int:channel id="processAuthRequestChannel"/>
    <int:channel id="postProcessorChannel"/>

    <int:chain input-channel="inboundRequestChannel" output-channel="enrichedInboundRequestChannel">
        <int:service-activator id="serviceActivator"
                       ref="ouboundService"  method="createRequest"/>
    </int:chain>

    <int-amqp:outbound-gateway id="outboundGtwyId" header-mapper="headerMapper"
                        request-channel="enrichedInboundRequestChannel"
                        reply-channel="defaultReplyChannel"
                        amqp-template="template" 
                        reply-timeout="30000" 
                        exchange-name="request_exchange" 
                        routing-key="request_exchange_queue"/>

    <int-amqp:inbound-channel-adapter id="amqpMessageDriven"  queue-names="request_queue" 
                                 connection-factory="rabbitConnectionFactory"  channel="processAuthRequestChannel"/>

    <int:service-activator id="serviceActivator"
                       ref="ouboundService" input-channel="processAuthRequestChannel" output-channel="postProcessorChannel"
                       method="processRequest"/>

    <int-amqp:outbound-channel-adapter amqp-template="template" channel="postProcessorChannel" 
            header-mapper="headerMapper" exchange-name="reply_exchange" routing-key="reply_exchange_queue"/>

    <bean id="headerMapper" class="org.springframework.integration.amqp.support.DefaultAmqpHeaderMapper"/>

配置

@Bean
public RabbitTemplate template(ConnectionFactory rabbitConnectionFactory){
    final RabbitTemplate template = new RabbitTemplate(rabbitConnectionFactory);
    template.setQueue("reply_queue");
    return template;
}



@Bean
public Binding binding(){
    return BindingBuilder.bind(this.queue()).to(this.exchange()).with("request_exchange_queue");
}

@Bean
public DirectExchange exchange(){
    return new DirectExchange("request_exchange");
}

@Bean
public Queue queue(){
    return new Queue("request_queue", true, false, true);
}

@Bean
public Binding bindingReply(){
    return BindingBuilder.bind(this.queue()).to(this.exchange()).with("reply_exchange_queue");
}

@Bean
public DirectExchange exchangeReply(){
    return new DirectExchange("reply_exchange");
}


@Bean
public Queue replyQueue(){
    return new Queue("reply_queue", true, false, true);
}

服务

@Service
public final class OuboundService {


    public Message createRequest(String message){
        System.out.println("Inside createRequest : "+ message);
        final String transactionId = UUID.randomUUID().toString();
        final Message builtMessage = MessageBuilder.withBody(message.getBytes())
                .setContentType(MessageProperties.CONTENT_TYPE_TEXT_PLAIN)
                .setHeader(AmqpHeaders.CORRELATION_ID, transactionId)
                .build();
        return builtMessage;
    }


    public Message processRequest(Message message){
        System.out.println("Inside process Request : "+ new String(message.getBody()));
        System.out.println("Header values : "+message.getMessageProperties().getHeaders());
        final Message result = MessageBuilder.withBody("Successful".getBytes()).copyProperties(message.getMessageProperties())
                                .copyHeaders(message.getMessageProperties().getHeaders()).build();
        return result;
    }

}

错误：

org.springframework.integration.handler.ReplyRequiredException：处理程序'outboundGtwyId'没有回复，其'requiresReply'属性设置为true。

GitHub源代码（已解决的解决方案）

https://github.com/kingkongprab/spring-amqp-outbound-gateway

Answer 1

相关性也在Spring AMQP中完成。有关详细信息，请参阅其RabbitTemplate#sendAndRecevie()。此外，Reference Manual还有关于此事的良好文档。

Spring与其AbstractAmqpOutboundEndpoint和AmqpInboundGateway实现的集成提供了开箱即用的请求 - 回复关联解决方案。如果您无法在服务器端使用AmqpInboundGateway，则应确保correlationId从收到的请求转移到要回复的回复。是的，您可以使用专用交换进行回复，这是RabbitTemplate#setQueue()支持等待客户端，出站端的回复。但如果没有适当的correlation转移，这仍然无法运作。另请参阅https://docs.spring.io/spring-integration/docs/4.3.12.RELEASE/reference/html/amqp.html#amqp-message-headers以获取有关如何在Spring Integration中映射标头（包括correlationId）的信息。

<强>更新

感谢您分享您的申请。

好吧，现在我看到了几个问题：

您肯定错过了replyQueue绑定：

@Bean
public Binding bindingReply(){
    return BindingBuilder.bind(this.replyQueue()).to(this.exchangeReply()).with("reply_exchange_queue");
}

RabbitTemplate必须使用setReplyAddress()。您必须为MessageListenerContainer配置reply_queue并将RabbitTemplate作为听众：

@Bean
public RabbitTemplate template(ConnectionFactory rabbitConnectionFactory){
    final RabbitTemplate template = new RabbitTemplate(rabbitConnectionFactory);
    template.setReplyAddress(replyQueue().getName());
    return template;
}

@Bean
public MessageListenerContainer replyContainer(RabbitTemplate template) {
    SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
    container.setConnectionFactory(template.getConnectionFactory());
    container.setQueues(replyQueue());
    container.setMessageListener(template);
    return container;
}

OuboundService进行org.springframework.amqp.core.Message操作无用。频道适配器不了解此类payload，您的自定义Message只是另一个body的序列化org.springframework.amqp.core.Message。我把它改成了这一切，一切运作良好：

public String createRequest(String message){
    System.out.println("Inside createRequest : "+ message);
    return message;
}


public Message processRequest(Message message){
    System.out.println("Inside process Request : " + message);
    return message;
}

无论如何，我建议你重新考虑你的设计，然后回到AmqpInboundGateway。

correlation

spring amqp-outbound网关从不同的thead生成回复（如jms-outbound gateway）

1 个答案: