采用B/S结构，对图书管理系统，实现用户注册、登录，图书分类管理，图书资料录入、修改、删除，分类列表，用关键字搜索图书。-By B/S structure, management system, implement user registration, login, category management books, books, data entry, modify, delete, sort the list, use the keyword search for books.