ActionContextCleanUp <<< is deprecated! Please use the new filters警告

解决办法：修改web.Xml中FilterDispatcher为StrutsPrepareAndExecuteFilter。

FilterDispatcher是struts2.0.x到2.1.2版本的核心过滤器.

StrutsPrepareAndExecuteFilter是自2.1.3开始就替代了FilterDispatcher的.

StrutsPrepareAndExecuteFilter是StrutsPrepareFilter和StrutsExecuteFilter的组合

 for   example:

<filter><filter-name>struts2Filter</filter-name><filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class></filter>