http://zhidao.baidu.com/question/314699239.html
http://ahjdzx1990.iteye.com/blog/1208147
http://sourceforge.net/projects/cimande/
http://www.sencha.com/forum/showthread.php?12545-integrating-Struts-Ext
http://www.sencha.com/forum/showthread.php?53920-extjs-struts-and-ajax