order
+OrderID: String+OrderDate: String+Type: String+Status: String+Salesman：String+Payment: String
+getCustomerInfor()+getOrderinfor()+new(Order)+remove(Order)+modify(Order)+addprice(Order)
product
+ProductID: String+ProductName: String+Price: Float+Status: String
+getProductinfor()
transportstate
+OrderID: String+ProductID: String+Location: String
+moniter()
salesman
+SlacesmanNname: String+Telphone: String
+getOrder()+getOrderstate()+getTransportstate()
customer
+CustomerID: String+CustomerName: String+Address: String+Telphone: String+Account: String
+getCustomerInfor()+payMoney()+linkCustomer+getTransportstate()
UI
orderstate
+OrderID: String+OrderStatus: String
