网上书店实例　本章中我们使用JSP和Java Bean来构建一个网上书店。本章介绍的例子可以分成两大部分，第一部分是普通程序，用于客户在网上选购图书，第二部分是管理程序-online bookstores examples of this chapter, we use JSP and Java Bean to create an online bookstore. The chapter describes examples can be divided into two parts, the first part of the ordinary procedures for customers to purchase books online, The second part of the management process