超市商品管理----北大青鸟S1项目:界面简单易懂，可以给初级编程员借鉴，不会做的，也可以借鉴下，一本正经的胡说，哈哈(Supermarket commodity management -- Peking University Jade Bird S1 project: the interface is simple and easy to understand, which can be learned from junior programmers, and can not be done.