留言板，实现了留言板的基本功能，使用jsp+servlet+bean的mvc模式，非常漂亮的css布局-Message board, to achieve the basic functions of a message board, using jsp+ servlet+ bean in the mvc pattern, very nice css layout

简单的图书管理系统的基本功能，比如图书的查询，添加修改-Simple basic functions of library management system, such as the books of the query, add, modify, etc.