public void SubmitOrder(Order order)
{
//该处可以做成可以配置，根据配置来选择业务规则
var spec = _orderSpecManager.GetSpecification(CustomerType.Vip);
if (order.Customer.CustomerType == CustomerType.Vip && spec(order))
{
//处理VIP订单逻辑
}
else if (order.Customer.CustomerType == CustomerType.Normal && spec(order))
{
//处理普通订单逻辑
}
}