网上书城，包含数据库文件，购物车采用数据库+session设计，能实现像淘宝的购物车功能，可保存用户的购物车。主要采用struts2+hibernate+spring设计-Online bookstores, including database files, database, shopping cart using session designed to achieve as Taobao s shopping cart feature, you can save the user s sh