问题
I'd like to know if the default behavior of JBoss server (4.2.3.GA in my case) is loading the classes in parent-first or parent-last mode. And in case it work as I suspect in parent-last mode (i.e. first trying to load classes from the application's WEB-INF/lib and only if they are not found go to server\lib), how can I configure it to work in the opposite- first trying to load classes from outside and only looking inside the application afterwards.
回答1:
It sounds like you need to set
java2ParentDelegation={false|true}
in your jboss-app.xml or jboss-web.xml. See this article for more information.
来源：https://stackoverflow.com/questions/2852613/classloading-order-in-jboss