MVC三层架构实例，本实验是一个根据身高和体重数据来衡量体重状况的程序。该程序是基于MVC框架开发的，程序代码包含3个文件，分别是：Model_Bean.java, view.jsp 和Controller_Servlet.java。-Three-tier MVC instance, the experiment is based on height and weight data of a measure of weight status of the program. The program