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Java J2EE实现在线书店购物网站购物车功能，随着网络的发展，兴起了许多网上商店，网上购物成了一种时尚，使用J2EE 架构可以很简单实现网上购物，而且可以把商业逻辑封装起来，可以很容易地进行移植和扩展-Java J2EE achieve online bookstore shopping site shopping cart functionality, with the development of the network, the rise of a number of online s