可以实现网上预订房间 显示客房状态，查询剩余的酒店，进行商品的购买和用户结算。可以以客户，管理员，会员的身份登录该系统，进行可视化的增删改查等操作(Online booking rooms can be realized to display room status, query the remaining hotels, purchase goods and settle accounts. You can log in to the system with the identity of t