如何在Spring中创建动态数量的DefaultMessageListenerContainer MDPojos？

Question

我需要根据配置值创建一个可变数量的这些，目的是让多个使用者，每个使用者对应一个物理资源，一次只能由一件事物来处理消息。

Answer 1

I implemented a container that manages multiple instances of DefaultMessageListenerContainer(s) which it creates based off of a prototypical instance if the listener. Based on a system property (a # value), a number of listeners are created and the queues they listen to are numeric "my.Queue" + ordinal number. This could obviously be modified to look up the queue names if necessary. That being said, this is not a dynamically expanding/contracting list of listeners. They are created at the beginning, although I think you could use this as a starting point to make it more dynamic if you wish to.

I wrote a pretty rudimentary unit test and a very rudimentary implementation (no multithreading taken into consideration), and it appears to work.

The maven project can be downloaded here - http://dl.dropbox.com/u/7812537/StackOverflowMultipleListeners.zip

BTW - there's an interesting thread here - http://forum.springsource.org/showthread.php?t=69604

I think there could be a way to do this by extending a generic bean factory but i'm not sure what your requirements are.