用户信息综合系统

代码说明：

说明：  实现用户综合系统一些简单功能和复杂功能，比如用户登录，添加、修改和删除个人信息；同时还可以实现删除选中，分页查询以及复杂条件查询等较为高级的功能。文件带有笔记和相关设计说明。(Realize some simple and complex functions of the user integrated system, such as user login, adding, modifying and deleting personal information; at the same time, it can also achieve more advanced functions such as deleting selection, paging query and complex condition query. Document with notes and related design instructions.)