kitten

在struts2.3.16.1下，web.xml中使用

… <filter> <filter-name>struts2</filter-name> <filter-class> org.apache.struts2.dispatcher.FilterDispatcher </filter-class>

會出現
***********************************************************************
*                               WARNING!!!                            *
*                                                                     *
* >>> FilterDispatcher <<< is deprecated! Please use the new filters! *
*                                                                     *
*           This can be a source of unpredictable problems!           *
*                                                                     *
*              Please refer to the docs for more details!             *
*            http://struts.apache.org/2.x/docs/webxml.html            *
*                                                                     *
***********************************************************************

原因在于:

Class FilterDispatcher Deprecated. Since Struts2.3.16.1, use StrutsPrepareAndExecuteFilter instead or StrutsPrepareFilterand StrutsExecuteFilter if needing using the ActionContextCleanUp filter in addition to this one..即，從Struts 2.1.3起已被標注為過時的，改用StrutsPrepareAndExecuteFilter

解決方法，將web.xml上述代碼改為：

…

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

來自：http://www.cnblogs.com/babybluevino/