-insert check role in welcomeAction for show different page with different
role
-build AuthenticationRoleInterceptor for interceptor role
-build Interceptor-stack name stack-with-root for intercept especial root
page
-change interceptor of Department and Employee struts file for use default
interceptor to stack-with-root
-insert global result name not root for redirect user to his/her page
-insert definition tile name welcomeUser for user
-new Jsp file name welcomeuser for user
-change call welcome.action to welcome for hidden call
-prevent access jsp page directly with move jsp to WEB-INF/pages
-modified tiles.xml to right path