功能比较完善，只是没有美化的文件管理系统。具体功能包括简单的登录注册，添加，查询，修改，删除，上传，下载各类文件，也有日志功能-The function is perfect, just do not beautify the document management system. Specific features include simple login registration, add, query, modify, delete, upload, download documents,