由于时间仓促,做了这个简单的同学录，可以进行用户注册、登陆和后台用户管理与其说是一个同学录，还不如说是简单的会员管理系统，可以做为初学者的学习参考.-Owing to time constraints, do this simple Classmates, users can register, login and user management is not so much a background Classmates, as it is a simple membership manage