我正在尝试从Camel 3.x迁移到Camel 4.x版本，所以我需要从rabbitmq组件迁移到替换的spring-rabbitmq组件。对于rabbitmq组件，我使用declare选项来让Camel自动创建和绑定队列和交换，现在我正在spring-rabbitmq组件中寻找等效的选项：
从文档中看，这是可能的：延期交易、排队和约束：
在您可以从RabbitMQ发送或接收消息之前，必须首先设置交换，队列和绑定。
在开发模式下，可能需要让Camel自动执行此操作。您可以通过在SpringRabbitMQComponent上设置autoDecliter =true来启用此功能。
然后Spring RabbitMQ将自动声明必要的元素，并设置交换，队列和路由键之间的绑定。
因此，我在application.properties中将camel.component.spring-rabbitmq.auto-declare属性配置为true，但这似乎只影响RabbitMQ消费者端点，而不是生产者。
使用这个简单的路由：

<route id="receive-send-rabbitmq">
    <from uri="spring-rabbitmq:in-exchange?queues=queue-in"/>
    <log message="message received" />    
    <to uri="spring-rabbitmq:out-exchange"/>
</route>

Camel在启动路由时正确地自动声明了in-exchange和queue-in对象，并正确地接收了消息。但是由于交换机out-exchange不可用，发送部分失败。堆栈跟踪：

2023-07-10T11:54:12.094+02:00 DEBUG 3796 --- [pool-2-thread-5] o.s.amqp.rabbit.core.RabbitTemplate      : Publishing message [(Body:'[B@149e60f3(byte[3])' MessageProperties [headers={}, contentType=application/octet-stream, contentLength=3, deliveryMode=PERSISTENT, priority=0, deliveryTag=0])] on exchange [out-exchange], routingKey = []
2023-07-10T11:54:12.099+02:00  INFO 3796 --- [ 127.0.0.1:5672] com.rabbitmq.client.impl.AMQConnection   : Received a frame on an unknown channel, ignoring it
2023-07-10T11:54:12.099+02:00 DEBUG 3796 --- [pool-2-thread-5] o.s.amqp.rabbit.connection.RabbitUtils   : Unexpected exception on closing RabbitMQ Channel
com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no exchange 'out-exchange' in vhost '/', class-id=60, method-id=40)
    at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:66)
    at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:36)
    at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:502)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
    at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no exchange 'out-exchange' in vhost '/', class-id=60, method-id=40)
    at com.rabbitmq.client.impl.ChannelN.asyncShutdown(ChannelN.java:517)
    at com.rabbitmq.client.impl.ChannelN.processAsync(ChannelN.java:341)
    at com.rabbitmq.client.impl.AMQChannel.handleCompleteInboundCommand(AMQChannel.java:182)
    at com.rabbitmq.client.impl.AMQChannel.handleFrame(AMQChannel.java:114)
    at com.rabbitmq.client.impl.AMQConnection.readFrame(AMQConnection.java:743)
    at com.rabbitmq.client.impl.AMQConnection.access$300(AMQConnection.java:47)
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:670)
    ... 1 common frames omitted

我知道我可以使用RabbitAdmin声明这些交换，但我不想在我的应用程序代码中手动处理这一点，路由作为专用文件夹中的XML文件交付，由应用程序在启动时动态加载。
使用Camel 4.0.0-rc 1和Sping Boot 3.1.1.