职责链模式—消费金额

职责链的入口

   /// <summary>
    /// 该类是花费金额职责链的入口，用于b层调用
    /// </summary>
    public class CostMoneyChain
    {
        public decimal getCostMoney(string rate, int costTime)
        {
            LimitMinuteHandler limitMinuteHandler = new LimitMinuteHandler();
            LessHourHandler lessHourHandler = new LessHourHandler();
            MoreHourHandler moreHourHandler = new MoreHourHandler();
            limitMinuteHandler.SetSuccessor(lessHourHandler);
            lessHourHandler.SetSuccessor(moreHourHandler);
            limitMinuteHandler.consumecash(rate, costTime);
            return CostMoneyHandler.costMoney;
        }
    }

抽象类

   /// <summary>
    /// 该类用于花费金额的抽象类，定义了骨架
    /// </summary>
    public abstract class CostMoneyHandler
    {
        public static decimal costMoney;
        protected CostMoneyHandler successor;//设置继任者
        public void SetSuccessor(CostMoneyHandler successor)
        {
            this.successor = successor;
        }
        public abstract void consumecash(string rate, int costTime);//处理请求计算时间的方法
    }

处理5-60分钟的消费

   /// <summary>
    /// 该类用于处理5-60分钟的消费金额的计算
    /// </summary>
    public class LessHourHandler : CostMoneyHandler
    {
        public override void consumecash(string rate, int costTime)
        {
            if (costTime <= 60)
            {
                costMoney = Convert.ToDecimal(rate);
            }
            else if (successor != null)
            {
                successor.consumecash(rate, costTime);
            }
        }
    }

处理最小分钟以内的金额

    /// <summary>
    /// 该类用于处理最小分钟以内的金额计算
    /// </summary>
    public class LimitMinuteHandler:CostMoneyHandler
    {
        public override void consumecash(string rate, int costTime)
        {
            string setuptime = System.Configuration.ConfigurationManager.AppSettings["setuptime"];
            int intSetupTime = Convert.ToInt32(setuptime);
            if (costTime < intSetupTime)
            {
                costMoney = 0;
            }
            else if (successor != null)
            {
                successor.consumecash(rate, costTime);
            }
        }
    }

处理大于60分钟的消费

   /// <summary>
    /// 该类用于处理大于60分钟的消费金额的计算
    /// </summary>
    public class MoreHourHandler: CostMoneyHandler
    {
        public override void consumecash(string rate, int costTime)
        {
            if (costTime > 60)
            {
                if (costTime % 60 == 0)
                {
                    costMoney = Convert.ToDecimal(rate) * costTime / 60;
                }
                else
                {
                    costMoney = Convert.ToDecimal(rate) * (costTime / 60 + 1);
                }
            }
            else if (successor != null)
            {
                successor.consumecash(rate, costTime);
            }
        }
    }

文章来源: blog.csdn.net，作者：张艳伟_Laura，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/Laura__zhang/article/details/114317732