这是一个MVC的实例代码，实现了对用户的添加，修改，删除好像没做完，数据库没有，由于没有分离，所以没有上传，其实也比较简单！-This is an instance of the MVC code, users add, modify, delete, did not finish as if the database does not, because there is no separation, there is no upload, in fact, relatively simple