如果我不能在JSF模板中使用f:viewAction，那么在哪里可以放置一般的后url处理代码呢?

I have a generic JSF page and abstract class that is implemented by many other pages and used to do its main processing in a @PostConstruct method. Now that I'm using URL parameters for some of the pages, I want to move all of the pages' processing into a viewAction action method instead so that it can use the URL parameters in their processing.I have a generic JSF page and abstract class th