RabbitMQ createChannel()

在使用createChannel()

Create a new channel, using an internally allocated channel number.

时发现，有可能接收不到消息。

原因：

http://www.rabbitmq.com/releases/rabbitmq-java-client/current-javadoc/com/rabbitmq/client/Channel.html

Channel instances must not be shared between threads. Applications should prefer using a Channel per thread instead of sharing the same Channel across multiple threads. While some operations on channels are safe to invoke concurrently, some are not and will result in incorrect frame interleaving on the wire. Sharing channels between threads will also interfere with Publisher Confirms. As such, applications need to use a Channel per thread

因为我们是多线程，所以不同的线程使用了相同的channel，这样会导致不安全。

所以偶尔在并发数据量大时，就会收不到消息，这个也与我们自己的机制有关。