机房重构之上下机
上下机是机房的一个大难点，第一次弄就用了不少时间，但是没有加入设计模式，师傅说让我加进去，好吧，不说别的，整呗。
上下机中上机相对简单，我没用设计模式，下机相对难一些，就用了策略模式与职责链模式相结合。 话不多说，先介绍。
U层
if (cardno.Text == "")
{
MessageBox.Show("请输入卡号", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
Entity.Line line2 = new Entity.Line(); //给line的实体层赋值
line2.cardno = cardno.Text.Trim();
line2.state="正在上机";
line2.offdate = DateTime.Now.ToString();
Facade.lineFacade loginfacade = new Facade.lineFacade();//数据传到外观层
DataTable flag = loginfacade.selectline(line2);
line2.ondate = flag.Rows[0][1].ToString();
if (flag.Rows.Count==0)
{
MessageBox.Show("此卡号未上机，请重新输入", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
cardno.Text = "";
}
else
{
Entity.card card = new Entity.card(); //获取金额类型
card.cardno=cardno.Text;
Facade.lineFacade loginfacade1 = new Facade.lineFacade();
DataTable flag1 = loginfacade1.selectline1(card);
card.type = flag1.Rows[0][4].ToString(); //将表中类型读取出来
double oldcash=Convert.ToDouble(flag1.Rows[0][2].ToString());//将表中金额读取出来（后面计算用）
Entity.BasicData basic = new Entity.BasicData();//储存数据到line表
Facade.lineFacade loginfacade2 = new Facade.lineFacade();
DataTable flag2=loginfacade2.selectline2(basic);
basic.rate = flag2.Rows[0][0].ToString(); //读取两种类型用户的每小时消费金额
basic.viprate = flag2.Rows[0][1].ToString();
Facade.OperateMoneyFacade facade = new Facade.OperateMoneyFacade();//实例化外观层的职责链模式
Entity.Line line = new Entity.Line();
facade.Money(line, basic, card); // 转到外观层
line.cardno = cardno.Text;
line.offdate = DateTime.Now.ToString();
line.state = "正在上机";
line.ontime = line.ontime; //实体中已经在B层算好数据传到实体层，因此可以直接用
line.oncash=line.oncash;
Facade.lineFacade loginfacade3 = new Facade.lineFacade();
DataTable flag3 = loginfacade3.selectline3(line);
MessageBox.Show("下机成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
Entity.card user4 = new Entity.card();//更新card表余额
user4.cardno = cardno.Text;
user4.cash = Convert.ToString(oldcash -Convert.ToDouble(line.oncash));//金额计算
Facade.lineFacade loginfacade4 = new Facade.lineFacade();
DataTable flag4 = loginfacade4.selectline4(user4);
Entity.Line user5 = new Entity.Line();//更新line表状态
user5.cardno = cardno.Text;
user5.state = "已下机";
Facade.lineFacade loginfacade5 = new Facade.lineFacade();
DataTable flag5 = loginfacade5.selectline5(user5);
#endregion
cardno.Text= "";
}
}外观层
public class OperateMoneyFacade
{
public void Money(Entity.Line line, Entity.BasicData basic, Entity.card card)
{
//实例化mOneBll和mTwoBll
loginBLL.OperateMoneyManager mOneBll = new loginBLL.OperateMoneyOne();
loginBLL.OperateMoneyManager mTwoBll = new loginBLL.OperateMoneyTwo();
//设置职责链上家与下家
mOneBll.SetSuccessor(mTwoBll);
//提交请求到B层
mOneBll.GetMoney(line, basic, card);
}
}B层
//下机处理策略模式
public abstract class bllCashSuper
{
public abstract string acceptCash(Entity.Line line, Entity.BasicData basic);
}
public class bllFixedUser : bllCashSuper
{
public override string acceptCash(Entity.Line line, Entity.BasicData basic)
{
//计算一般用户收费金额
TimeSpan ontime1 = Convert.ToDateTime(line.offdate) - Convert.ToDateTime(line.ondate);//计算上机时间
double ontime2 = Convert.ToDouble(ontime1.TotalHours);//转化时间
line.ontime = Convert.ToString(ontime2 + 1);
line.oncash = Convert.ToString(Convert.ToInt32(line.ontime) * Convert.ToInt32(basic.rate));
return Convert.ToString(line.oncash);
}
}
public class bllTempUser : bllCashSuper
{
public override string acceptCash(Entity.Line line, Entity.BasicData basic)
{
//计算固定用户收费金额
TimeSpan ontime1 = Convert.ToDateTime(line.offdate) - Convert.ToDateTime(line.ondate);//计算上机时间
double ontime2 = Convert.ToDouble(ontime1.TotalHours);//转化时间
int time = Convert.ToInt32(ontime2 + 1);
line.ontime = Convert.ToString(time);
line.oncash = Convert.ToString(Convert.ToInt32(line.ontime) * Convert.ToInt32(basic.viprate));
return Convert.ToString(line.oncash);
}
}
//下机处理职责链模式
public abstract class OperateMoneyManager
{
protected OperateMoneyManager successor;
//设置继承者
public void SetSuccessor(OperateMoneyManager successor)
{
this.successor = successor;
}
//处理请求的抽象方法
public bllFixedUser bllfixeduser = new bllFixedUser();
public bllTempUser blltempuser = new bllTempUser();
public abstract void GetMoney(Entity.Line line,Entity.BasicData basic,Entity.card card);
}
public class OperateMoneyOne : OperateMoneyManager
{
public override void GetMoney(Entity.Line line, Entity.BasicData basic, Entity.card card)
{
//当上机时间小于准备时间时，不收费
if (Convert.ToDouble(line.ontime) <= Convert.ToDouble(basic.leastTime))
{
line.ontime = Convert.ToString(0);
line.oncash = Convert.ToString(0);
}
else
{
successor.GetMoney(line, basic,card); //转到下一级
}
}
}
public class OperateMoneyTwo : OperateMoneyManager
{
public override void GetMoney(Entity.Line line, Entity.BasicData basic,Entity.card card)
{
if (Convert.ToDouble(line.ontime) >(Convert.ToDouble(basic.leastTime)/60))
{
if (card.type == "一般用户")
{
bllfixeduser.acceptCash(line,basic); //调用策略模式
}
else
{
blltempuser.acceptCash(line, basic);
}
}
else
{
successor.GetMoney(line, basic,card); //（如果没有下一级可不写）
}
}
}
}
其他层与原先的一样，就不再介绍。我写的这个原理就是U层–外观层–B层（设计模式处理）–返回到U层（已经传值到实体层）–七层（在走一次七层将数据保存到表中）。不管是简单复杂反正是弄出来了，这期间请教了很多人，看了很多博客，写了很多代码，调了很多bug，着实不易！所以就想写一个清楚的版本给其他需要的同学借鉴。
希望这篇博客能对你有帮助！