基于角色的权限设计

http://www.blogjava.net/allrounder/archive/2011/10/29/328878.html

http://blog.csdn.net/ben1247/article/details/7186457

http://www.cnblogs.com/yukaizhao/archive/2007/04/15/user_role_action_permission.html

http://wenku.baidu.com/view/87ec46275901020207409c31.html

http://wenku.baidu.com/view/02b596717fd5360cba1adb11.html

http://www.cnblogs.com/leoxie2011/archive/2011/05/19/2050626.html

http://www.doc88.com/p-372433125556.html