自己写了一个角色权限控制的框架，仅仅使用了DOM在html的view层，以及JSP、Struts展现标记在前端控制层，Action多组类在后端控制层,两个biz类在模型层。本上载部分为第一部分，验证了一组递归算法实现checkbox的1种状态变化。-Wrote out a framework for the role based privilege control, which includes static html using javascipt on View layer, JSP& some tags of Struts on the front Control layer, a group of Action classes on the behind Control layer,and　two biz classes on Model layer. This upload portion is the first part, verified by a group of recursive algorithm about checkbox of 7 state　changes.