实现了在线拍卖功能：其完整功能如下：用户注册；用户登入；浏览正在拍卖的商品；查看商品出价记录； 用户登入后可以：添加之际要拍卖的商品； 对正在拍卖的商品竞价；-Implementation of the online auction features: it is complete the following functions: user registration user login browser is auction