主要实现电力购售数据管理平台的功能，即各种购电报表、售电报表进行查询、删除、修改、删除的功能。用户分类进行登录，不同类型的用户，主页面也不相同-The main achievement of power purchase and sale of functional data management platform that purchase various reports, the sale of electricity report query, delete, modify and del