网站启动SSL， http变为https后，session验证码错误解决方法

<script language="vbscript" runat="server">    Option Explicit ‘显示声明    Dim showErrorImg    showErrorImg = False    function ChkPost()         dim server_v1,server_v2        chkpost=false        server_v1=Cstr(Request.ServerVariables("HTTP_REFERER"))        server_v2=Cstr(Request.ServerVariables("SERVER_NAME"))        If Mid(server_v1,8,Len(server_v2))<>server_v2 then            chkpost=False        else            chkpost=True        end If    end Function    If Not ChkPost() Then        showErrorImg = true    End If            Class Com_GifCode_Class        Public Noisy, Count, Width, Height, Angle, Offset, Border        Private Graph(), Margin(3)        Private Sub Class_Initialize()            Randomize             Noisy = 1 ‘ 干扰点出现的概率             Count = 4  ‘ 字符数量            Width = 40 ‘ 图片宽度            Height = 20 ‘ 图片高度            Angle = 2  ‘ 角度随机变化量            Offset = 15 ‘ 偏移随机变化量            Border = 1.5 ‘ 边框大小        End Sub                 Public Function Create2(str)            Dim i            Dim vIndex            ReDim Graph(Width-1, Height-1)            For i = 0 To Count - 1                vIndex=CInt(Mid(str,i+1,1)-1)                SetDraw vIndex, i            Next        End Function            Sub SetDot(pX, pY)            If pX * (Width-pX-1) >= 0 And pY * (Height-pY-1) >= 0 Then                Graph(pX, pY) = 1            End If        End Sub        Public Sub SetDraw(pIndex, pNumber)            ‘ 字符数据字典            If pIndex=-1 Then pIndex=9            Dim DotData(9)            DotData(0) = Array(30, 15, 50, 1, 50, 100)            DotData(1) = Array(1 ,34 ,30 ,1 ,71, 1, 100, 34, 1, 100, 93, 100, 100, 86)             DotData(2) = Array(1, 1, 100, 1, 42, 42, 100, 70, 50, 100, 1, 70)            DotData(3) = Array(100, 73, 6, 73, 75, 6, 75, 100)            DotData(4) = Array(100, 1, 1, 1, 1, 50, 50, 35, 100, 55, 100, 80, 50, 100, 1, 95)            DotData(5) = Array(100, 20, 70, 1, 20, 1, 1, 30, 1, 80, 30, 100, 70, 100, 100, 80, 100, 60, 70, 50, 30, 50, 1, 60)             DotData(6) = Array(6, 26, 6, 6, 100, 6, 53, 100)            DotData(7) = Array(100, 30, 100, 20, 70, 1, 30, 1, 1, 20, 1, 30, 100, 70, 100, 80, 70, 100, 30, 100, 1, 80, 1, 70, 100, 30)            DotData(8) = Array(1, 80, 30, 100, 80, 100, 100, 70, 100, 20, 70, 1, 30, 1, 1, 20, 1, 40, 30, 50, 70, 50, 100, 40)             DotData(9) = Array(100, 20, 70, 1, 20, 1, 1, 30, 1, 80, 30, 100, 70, 100, 100, 80, 100, 60, 90, 20, 80,3)            Dim vExtent : vExtent = Width / Count                        Margin(0) = Border + vExtent * (Rnd * Offset) / 100 + Margin(1)                        Margin(1) = vExtent * (pNumber + 1) - Border - vExtent * (Rnd * Offset) / 100                        Margin(2) = Border + Height * (Rnd * Offset) / 100                        Margin(3) = Height - Border - Height * (Rnd * Offset) / 100            Dim vStartX, vEndX, vStartY, vEndY            Dim vWidth, vHeight, vDX, vDY, vDeltaT            Dim vAngle, vLength            vWidth =Int(Margin(1) - Margin(0))            vHeight =Int(Margin(3) - Margin(2))            vStartX = Int((DotData(pIndex)(0)-1) * vWidth / 100)            vStartY = Int((DotData(pIndex)(1)-1) * vHeight / 100)            Dim i, j            For i = 1 To UBound(DotData(pIndex), 1)/2                If DotData(pIndex)(2*i-2) <> 0 And DotData(pIndex)(2*i) <> 0 Then                     vEndX = (DotData(pIndex)(2*i)-1) * vWidth / 100                    vEndY = (DotData(pIndex)(2*i+1)-1) * vHeight / 100                    vDX = vEndX - vStartX                    vDY = vEndY - vStartY                    If vDX = 0 Then                        vAngle = Sgn(vDY) * 3.14 /2                    Else                        vAngle = Atn(vDY / vDX)                    End If                    If Sin(vAngle) = 0 Then                        vLength = vDX                    Else                        vLength = vDY / Sin(vAngle)                    End If                    vAngle = vAngle + (Rnd - 0.5) * 2 * Angle * 3.14 * 2 / 100                    vDX = Int(Cos(vAngle) * vLength)                    vDY = Int(Sin(vAngle) * vLength)                    If Abs(vDX) > Abs(vDY) Then vDeltaT = Abs(vDX) Else vDeltaT = Abs(vDY)                    For j = 1 To vDeltaT                        SetDot Margin(0) + vStartX + j * vDX / vDeltaT, Margin(2) + vStartY + j * vDY / vDeltaT                     Next                    vStartX = vStartX + vDX                    vStartY = vStartY + vDY                End If            Next        End Sub        Public Sub Output()            Response.Expires = -9999            Response.AddHeader "pragma", "no-cache"            Response.AddHeader "cache-ctrol", "no-cache"            Response.ContentType = "image/gif"             Response.BinaryWrite ChrB(Asc("G")) & ChrB(Asc("I")) & ChrB(Asc("F"))            Response.BinaryWrite ChrB(Asc("8")) & ChrB(Asc("9")) & ChrB(Asc("a"))             Response.BinaryWrite ChrB(Width Mod 256) & ChrB((Width \ 256) Mod 256)            Response.BinaryWrite ChrB(Height Mod 256) & ChrB((Height \ 256) Mod 256)            Response.BinaryWrite ChrB(128) & ChrB(0) & ChrB(0)             Response.BinaryWrite ChrB(250) & ChrB(250) & ChrB(250)            Response.BinaryWrite ChrB(0) & ChrB(0) & ChrB(0)            Response.BinaryWrite ChrB(Asc(","))            Response.BinaryWrite ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0)             Response.BinaryWrite ChrB(Width Mod 256) & ChrB((Width \ 256) Mod 256)            Response.BinaryWrite ChrB(Height Mod 256) & ChrB((Height \ 256) Mod 256)            Response.BinaryWrite ChrB(0) & ChrB(7) & ChrB(255)             Dim x, y, i : i = 0            For y = 0 To Height - 1                For x = 0 To Width - 1                    If Rnd < Noisy / 100 Then                        Response.BinaryWrite ChrB(1-Graph(x, y))                    ElseIf x * (x-Width) = 0 Or y * (y-Height) = 0 Then                         Response.BinaryWrite ChrB(Graph(x, y))                    ElseIf Graph(x-1, y) = 1 Or Graph(x, y) Or Graph(x, y-1) = 1 Then                        Response.BinaryWrite ChrB(1)                    Else                        Response.BinaryWrite ChrB(0)                    End If                    If (y * Width + x + 1) Mod 126 = 0 Then                        Response.BinaryWrite ChrB(128)                        i = i + 1                    End If                    If (y * Width + x + i + 1) Mod 255 = 0 Then                        If (Width*Height - y * Width - x - 1) > 255 Then                             Response.BinaryWrite ChrB(255)                        Else                            Response.BinaryWrite ChrB(Width * Height Mod 255)                        End If                    End If                Next            Next            Response.BinaryWrite ChrB(128) & ChrB(0) & ChrB(129) & ChrB(0) & ChrB(59)         End Sub    End Class    ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘         Dim mCode    Set mCode = New Com_GifCode_Class      Randomize    Dim code    code = Int(Rnd * 9000 + 1000)    If showErrorImg Then        Session("GetCode") = Int(Rnd * 9000 + 1000)    else        Session("GetCode") = code    End If            mCode.Create2(code)    mCode.Output()    </script>

<%Const nMaxSaturation = 100            ‘ 最大色彩饱和度Const nBlankNoisyDotOdds = 0.2  ‘ 空白处噪点率Const nColorNoisyDotOdds = 0 ‘ 有色处噪点率Const nCharCount = 5                        ‘ 产生的字符个数Const nPixelWidth = 20                    ‘ 单个字符位图的宽度Const nPixelHeight = 20                   ‘ 单个字符位图的高度Const nColorHue = 000                        ‘ 显示验证码的色调(-1表示随机色调, -2表示灰度色调)Const nAngleRandom = 10         ‘ 角度随机量Const nLengthRandom = 10        ‘ 长度随机量(百分比)Const cCharSet = "0123456789"                                ‘ 构成验证码的字符集                                ‘ 如果扩充了下边的字母矢量库，则可以相应扩充这个字符集Dim Buf(), DigtalStrDim Lines(), LineCountDim CursorX, CursorY, DirX, DirYRandomizeCall CreatValidCode("GetCode")Sub CDGen_Reset()    ‘ 复位矢量笔和环境变量    LineCount = 0    CursorX = 0    CursorY = 0    ‘ 初始的光笔方向是垂直向下    DirX = 0    DirY = 1End SubSub CDGen_Clear()    ‘ 清空位图阵列    Dim i, j    ReDim Buf(nPixelHeight - 1, nCharCount * nPixelWidth - 1)    For j = 0 To nPixelHeight - 1        For i = 0 To nCharCount * nPixelWidth - 1            Buf(j, i) = 0        Next    NextEnd SubSub CDGen_PSet(X, Y)    ‘ 在位图阵列上画点    Buf(Y, X) = 1End SubSub CDGen_Line(X1, Y1, X2, Y2)    ‘ 在位图阵列上画线    Dim DX, DY, DeltaT, i        DX = X2 - X1    DY = Y2 - Y1    If Abs(DX) > Abs(DY) Then DeltaT = Abs(DX) Else DeltaT = Abs(DY)    For i = 0 To DeltaT        CDGen_PSet X1 + DX * i / DeltaT, Y1 + DY * i / DeltaT    NextEnd SubSub CDGen_FowardDraw(nLength)    ‘ 按当前光笔方向绘制指定长度并移动光笔，正数表示从左向右/从上向下绘制，负数表示从右向左/从下向上绘制    nLength = Sgn(nLength) * Abs(nLength) * (1 - nLengthRandom / 100 + Rnd * nLenghtRandom * 2 / 100)    ReDim Preserve Lines(3, LineCount)    Lines(0, LineCount) = CursorX    Lines(1, LineCount) = CursorY    CursorX = CursorX + DirX * nLength    CursorY = CursorY + DirY * nLength    Lines(2, LineCount) = CursorX    Lines(3, LineCount) = CursorY    LineCount = LineCount + 1End SubSub CDGen_SetDirection(nAngle)    ‘ 按指定角度设定画笔方向, 正数表示相对当前方向顺时针改变方向，负数表示相对当前方向逆时针改变方向    Dim DX, DY        nAngle = Sgn(nAngle) * (Abs(nAngle) - nAngleRandom + Rnd * nAngleRandom * 2) / 180 * 3.1415926    DX = DirX    DY = DirY    DirX = DX * Cos(nAngle) - DY * Sin(nAngle)    DirY = DX * Sin(nAngle) + DY * Cos(nAngle)End SubSub CDGen_MoveToMiddle(nActionIndex, nPercent)    ‘ 将画笔光标移动到指定动作的中间点上，nPercent为中间位置的百分比    Dim DeltaX, DeltaY        DeltaX = Lines(2, nActionIndex) - Lines(0, nActionIndex)    DeltaY = Lines(3, nActionIndex) - Lines(1, nActionIndex)    CursorX = Lines(0, nActionIndex) + Sgn(DeltaX) * Abs(DeltaX) * nPercent / 100    CursorY = Lines(1, nActionIndex) + Sgn(DeltaY) * Abs(DeltaY) * nPercent / 100End SubSub CDGen_MoveCursor(nActionIndex)    ‘ 将画笔光标移动到指定动作的起始点上    CursorX = Lines(0, nActionIndex)    CursorY = Lines(1, nActionIndex)End SubSub CDGen_Close(nActionIndex)    ‘ 将当前光笔位置与指定动作的起始点闭合并移动光笔    ReDim Preserve Lines(3, LineCount)    Lines(0, LineCount) = CursorX    Lines(1, LineCount) = CursorY    CursorX = Lines(0, nActionIndex)    CursorY = Lines(1, nActionIndex)    Lines(2, LineCount) = CursorX    Lines(3, LineCount) = CursorY    LineCount = LineCount + 1End SubSub CDGen_CloseToMiddle(nActionIndex, nPercent)    ‘ 将当前光笔位置与指定动作的中间点闭合并移动光笔，nPercent为中间位置的百分比    Dim DeltaX, DeltaY        ReDim Preserve Lines(3, LineCount)    Lines(0, LineCount) = CursorX    Lines(1, LineCount) = CursorY    DeltaX = Lines(2, nActionIndex) - Lines(0, nActionIndex)    DeltaY = Lines(3, nActionIndex) - Lines(1, nActionIndex)    CursorX = Lines(0, nActionIndex) + Sgn(DeltaX) * Abs(DeltaX) * nPercent / 100    CursorY = Lines(1, nActionIndex) + Sgn(DeltaY) * Abs(DeltaY) * nPercent / 100    Lines(2, LineCount) = CursorX    Lines(3, LineCount) = CursorY    LineCount = LineCount + 1End SubSub CDGen_Flush(X0, Y0)    ‘ 按照当前的画笔动作序列绘制位图点阵    Dim MaxX, MinX, MaxY, MinY    Dim DeltaX, DeltaY, StepX, StepY, OffsetX, OffsetY    Dim i    MaxX = MinX = MaxY = MinY = 0    For i = 0 To LineCount - 1        If MaxX < Lines(0, i) Then MaxX = Lines(0, i)        If MaxX < Lines(2, i) Then MaxX = Lines(2, i)        If MinX > Lines(0, i) Then MinX = Lines(0, i)        If MinX > Lines(2, i) Then MinX = Lines(2, i)        If MaxY < Lines(1, i) Then MaxY = Lines(1, i)        If MaxY < Lines(3, i) Then MaxY = Lines(3, i)        If MinY > Lines(1, i) Then MinY = Lines(1, i)        If MinY > Lines(3, i) Then MinY = Lines(3, i)    Next    DeltaX = MaxX - MinX    DeltaY = MaxY - MinY    If DeltaX = 0 Then DeltaX = 1    If DeltaY = 0 Then DeltaY = 1    MaxX = MinX    MaxY = MinY    If DeltaX > DeltaY Then        StepX = (nPixelWidth - 2) / DeltaX        StepY = (nPixelHeight - 2) / DeltaX        OffsetX = 0        OffsetY = (DeltaX - DeltaY) / 2    Else        StepX = (nPixelWidth - 2) / DeltaY        StepY = (nPixelHeight - 2) / DeltaY        OffsetX = (DeltaY - DeltaX) / 2        OffsetY = 0    End If    For i = 0 To LineCount - 1        Lines(0, i) = Round((Lines(0, i) - MaxX + OffsetX) * StepX, 0)        If Lines(0, i) < 0 Then Lines(0, i) = 0        If Lines(0, i) >= nPixelWidth - 2 Then Lines(0, i) = nPixelWidth - 3        Lines(1, i) = Round((Lines(1, i) - MaxY + OffsetY) * StepY, 0)        If Lines(1, i) < 0 Then Lines(1, i) = 0        If Lines(1, i) >= nPixelHeight - 2 Then Lines(1, i) = nPixelHeight - 3        Lines(2, i) = Round((Lines(2, i) - MinX + OffsetX) * StepX, 0)        If Lines(2, i) < 0 Then Lines(2, i) = 0        If Lines(2, i) >= nPixelWidth - 2 Then Lines(2, i) = nPixelWidth - 3        Lines(3, i) = Round((Lines(3, i) - MinY + OffsetY) * StepY, 0)        If Lines(3, i) < 0 Then Lines(3, i) = 0        If Lines(3, i) >= nPixelHeight - 2 Then Lines(3, i) = nPixelHeight - 3        CDGen_Line Lines(0, i) + X0 + 1, Lines(1, i) + Y0 + 1, Lines(2, i) + X0 + 1, Lines(3, i) + Y0 + 1    NextEnd SubSub CDGen_Char(cChar, X0, Y0)    ‘ 在指定坐标处生成指定字符的位图阵列    CDGen_Reset    Select Case cChar    Case "0"        CDGen_SetDirection -60                            ‘ 逆时针60度(相对于垂直线)        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection -60                            ‘ 逆时针60度        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw 1.5                              ‘ 绘制1.5个单位        CDGen_SetDirection -60                            ‘ 逆时针60度        CDGen_FowardDraw 0.7                              ‘ 绘制0.7个单位        CDGen_SetDirection -60                            ‘ 顺时针120度        CDGen_FowardDraw 0.7                              ‘ 绘制0.7个单位        CDGen_Close 0                                     ‘ 封闭当前笔与第0笔(0开始)    Case "1"        CDGen_SetDirection -90                            ‘ 逆时针90度(相对于垂直线)        CDGen_FowardDraw 0.5                              ‘ 绘制0.5个单位        CDGen_MoveToMiddle 0, 50                          ‘ 移动画笔的位置到第0笔(0开始)的50%处        CDGen_SetDirection 90                             ‘ 逆时针90度        CDGen_FowardDraw -1.4                             ‘ 反方向绘制1.4个单位        CDGen_SetDirection 30                             ‘ 逆时针30度        CDGen_FowardDraw 0.4                              ‘ 绘制0.4个单位    Case "2"        CDGen_SetDirection 45                             ‘ 顺时针45度(相对于垂直线)        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection -120                           ‘ 逆时针120度        CDGen_FowardDraw 0.4                              ‘ 绘制0.4个单位        CDGen_SetDirection 60                             ‘ 顺时针60度        CDGen_FowardDraw 0.6                              ‘ 绘制0.6个单位        CDGen_SetDirection 60                             ‘ 顺时针60度        CDGen_FowardDraw 1.6                              ‘ 绘制1.6个单位        CDGen_SetDirection -135                           ‘ 逆时针135度        CDGen_FowardDraw 1.0                              ‘ 绘制1.0个单位    Case "3"        CDGen_SetDirection -90                            ‘ 逆时针90度(相对于垂直线)        CDGen_FowardDraw 0.8                              ‘ 绘制0.8个单位        CDGen_SetDirection 135                            ‘ 顺时针135度        CDGen_FowardDraw 0.8                              ‘ 绘制0.8个单位        CDGen_SetDirection -120                           ‘ 逆时针120度        CDGen_FowardDraw 0.6                              ‘ 绘制0.6个单位        CDGen_SetDirection 80                             ‘ 顺时针80度        CDGen_FowardDraw 0.5                              ‘ 绘制0.5个单位        CDGen_SetDirection 60                             ‘ 顺时针60度        CDGen_FowardDraw 0.5                              ‘ 绘制0.5个单位        CDGen_SetDirection 60                             ‘ 顺时针60度        CDGen_FowardDraw 0.5                              ‘ 绘制0.5个单位    Case "4"        CDGen_SetDirection 20                             ‘ 顺时针20度(相对于垂直线)        CDGen_FowardDraw 0.8                              ‘ 绘制0.8个单位        CDGen_SetDirection -110                           ‘ 逆时针110度        CDGen_FowardDraw 1.2                              ‘ 绘制1.2个单位        CDGen_MoveToMiddle 1, 60                          ‘ 移动画笔的位置到第1笔(0开始)的60%处        CDGen_SetDirection 90                             ‘ 顺时针90度        CDGen_FowardDraw 0.7                              ‘ 绘制0.7个单位        CDGen_MoveCursor 2                                ‘ 移动画笔到第2笔(0开始)的开始处        CDGen_FowardDraw -1.5                             ‘ 反方向绘制1.5个单位    Case "5"        CDGen_SetDirection 90                             ‘ 顺时针90度(相对于垂直线)        CDGen_FowardDraw 1.0                              ‘ 绘制1.0个单位        CDGen_SetDirection -90                            ‘ 逆时针90度        CDGen_FowardDraw 0.8                              ‘ 绘制0.8个单位        CDGen_SetDirection -90                            ‘ 逆时针90度        CDGen_FowardDraw 0.8                              ‘ 绘制0.8个单位        CDGen_SetDirection 30                             ‘ 顺时针30度        CDGen_FowardDraw 0.4                              ‘ 绘制0.4个单位        CDGen_SetDirection 60                             ‘ 顺时针60度        CDGen_FowardDraw 0.4                              ‘ 绘制0.4个单位        CDGen_SetDirection 30                             ‘ 顺时针30度        CDGen_FowardDraw 0.5                              ‘ 绘制0.5个单位        CDGen_SetDirection 60                             ‘ 顺时针60度        CDGen_FowardDraw 0.8                              ‘ 绘制0.8个单位    Case "6"        CDGen_SetDirection -60                            ‘ 逆时针60度(相对于垂直线)        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection -60                            ‘ 逆时针60度        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw 1.5                              ‘ 绘制1.5个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw 0.7                              ‘ 绘制0.7个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw 0.5                              ‘ 绘制0.5个单位        CDGen_CloseToMiddle 2, 50                         ‘ 将当前画笔位置与第2笔(0开始)的50%处封闭    Case "7"        CDGen_SetDirection 180                            ‘ 顺时针180度(相对于垂直线)        CDGen_FowardDraw 0.3                              ‘ 绘制0.3个单位        CDGen_SetDirection 90                             ‘ 顺时针90度        CDGen_FowardDraw 0.9                              ‘ 绘制0.9个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw 1.3                              ‘ 绘制1.3个单位    Case "8"        CDGen_SetDirection -60                            ‘ 逆时针60度(相对于垂直线)        CDGen_FowardDraw -0.8                             ‘ 反方向绘制0.8个单位        CDGen_SetDirection -60                            ‘ 逆时针60度        CDGen_FowardDraw -0.8                             ‘ 反方向绘制0.8个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw 0.8                              ‘ 绘制0.8个单位        CDGen_SetDirection 110                            ‘ 顺时针110度        CDGen_FowardDraw -1.5                             ‘ 反方向绘制1.5个单位        CDGen_SetDirection -110                           ‘ 逆时针110度        CDGen_FowardDraw 0.9                              ‘ 绘制0.9个单位        CDGen_SetDirection 60                             ‘ 顺时针60度        CDGen_FowardDraw 0.8                              ‘ 绘制0.8个单位        CDGen_SetDirection 60                             ‘ 顺时针60度        CDGen_FowardDraw 0.8                              ‘ 绘制0.8个单位        CDGen_SetDirection 60                             ‘ 顺时针60度        CDGen_FowardDraw 0.9                              ‘ 绘制0.9个单位        CDGen_SetDirection 70                             ‘ 顺时针70度        CDGen_FowardDraw 1.5                                ‘ 绘制1.5个单位        CDGen_Close 0                                     ‘ 封闭当前笔与第0笔(0开始)    Case "9"        CDGen_SetDirection 120                            ‘ 逆时针60度(相对于垂直线)        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection -60                            ‘ 逆时针60度        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection -60                            ‘ 顺时针120度        CDGen_FowardDraw -1.5                              ‘ 绘制1.5个单位        CDGen_SetDirection -60                            ‘ 顺时针120度        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection -60                            ‘ 顺时针120度        CDGen_FowardDraw -0.7                              ‘ 绘制0.7个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw 0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection -60                            ‘ 顺时针120度        CDGen_FowardDraw 0.5                              ‘ 绘制0.5个单位        CDGen_CloseToMiddle 2, 50                         ‘ 将当前画笔位置与第2笔(0开始)的50%处封闭    ‘ 以下为字母的矢量动作，有兴趣的可以继续    Case "A"        CDGen_SetDirection -(Rnd * 20 + 150)              ‘ 逆时针150-170度(相对于垂直线)        CDGen_FowardDraw Rnd * 0.2 + 1.1                  ‘ 绘制1.1-1.3个单位        CDGen_SetDirection Rnd * 20 + 140                 ‘ 顺时针140-160度        CDGen_FowardDraw Rnd * 0.2 + 1.1                  ‘ 绘制1.1-1.3个单位        CDGen_MoveToMiddle 0, 30                          ‘ 移动画笔的位置到第1笔(0开始)的30%处        CDGen_CloseToMiddle 1, 70                         ‘ 将当前画笔位置与第1笔(0开始)的70%处封闭    Case "B"        CDGen_SetDirection -(Rnd * 20 + 50)               ‘ 逆时针50-70度(相对于垂直线)        CDGen_FowardDraw Rnd * 0.4 + 0.8                  ‘ 绘制0.8-1.2个单位        CDGen_SetDirection Rnd * 20 + 110                 ‘ 顺时针110-130度        CDGen_FowardDraw Rnd * 0.2 + 0.6                  ‘ 绘制0.6-0.8个单位        CDGen_SetDirection -(Rnd * 20 + 110)              ‘ 逆时针110-130度        CDGen_FowardDraw Rnd * 0.2 + 0.6                  ‘ 绘制0.6-0.8个单位        CDGen_SetDirection Rnd * 20 + 110                 ‘ 顺时针110-130度        CDGen_FowardDraw Rnd * 0.4 + 0.8                  ‘ 绘制0.8-1.2个单位        CDGen_Close 0                                     ‘ 封闭当前笔与第1笔(0开始)    Case "C"        CDGen_SetDirection -60                            ‘ 逆时针60度(相对于垂直线)        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection -60                            ‘ 逆时针60度        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw 1.5                              ‘ 绘制1.5个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw -0.7                             ‘ 反方向绘制0.7个单位        CDGen_SetDirection 120                            ‘ 顺时针120度        CDGen_FowardDraw 0.7                              ‘ 绘制0.7个单位    End Select    CDGen_Flush X0, Y0End SubSub CDGen_Blur()    ‘ 对产生的位图进行柔化处理    Dim i, j        For j = 1 To nPixelHeight - 2        For i = 1 To nCharCount * nPixelWidth - 2            If Buf(j, i) = 0 Then                If ((Buf(j, i - 1) Or Buf(j + 1, i)) And 1) <> 0 Then                    ‘ 如果当前点是空白点，且上下左右四个点中有一个点是有色点，则该点做柔化处理                    Buf(j, i) = 2                End If            End If        Next    NextEnd SubSub CDGen_NoisyDot()    ‘ 对产生的位图进行噪点处理    Dim i, j, NoisyDot, CurDot        For j = 0 To nPixelHeight - 1        For i = 0 To nCharCount * nPixelWidth - 1            If Buf(j, i) <> 0 Then                NoisyDot = Int(Rnd * Rnd * nMaxSaturation)                Select Case nColorNoisyDotOdds                Case 0                    CurDot = nMaxSaturation                Case 1                    CurDot = 0                Case Else                    CurDot = NoisyDot                End Select                If Rnd < nColorNoisyDotOdds Then Buf(j, i) = CurDot Else Buf(j, i) = nMaxSaturation            Else                NoisyDot = Int(Rnd * nMaxSaturation)                Select Case nBlankNoisyDotOdds                Case 0                    CurDot = 0                Case 1                    CurDot = nMaxSaturation                Case Else                    CurDot = NoisyDot                End Select                If Rnd < nBlankNoisyDotOdds Then Buf(j, i) = CurDot Else Buf(j, i) = 0            End If        Next    NextEnd SubSub CDGen()    ‘ 生成位图阵列    Dim i, Ch        DigtalStr = ""    CDGen_Clear    For i = 0 To nCharCount - 1        Ch = Mid(cCharSet, Int(Rnd * Len(cCharSet)) + 1, 1)        DigtalStr = DigtalStr + Ch        CDGen_Char Ch, i * nPixelWidth, 0    Next    CDGen_Blur    CDGen_NoisyDotEnd SubFunction HSBToRGB(vH, vS, vB)    ‘ 将颜色值由HSB转换为RGB    Dim aRGB(3), RGB1st, RGB2nd, RGB3rd    Dim nH, nS, nB    Dim lH, nF, nP, nQ, nT    vH = (vH Mod 360)    If vS > 100 Then        vS = 100    ElseIf vS < 0 Then        vS = 0    End If    If vB > 100 Then        vB = 100    ElseIf vB < 0 Then        vB = 0    End If    If vS > 0 Then        nH = vH / 60        nS = vS / 100        nB = vB / 100        lH = Int(nH)        nF = nH - lH        nP = nB * (1 - nS)        nQ = nB * (1 - nS * nF)        nT = nB * (1 - nS * (1 - nF))        Select Case lH        Case 0            aRGB(0) = nB * 255            aRGB(1) = nT * 255            aRGB(2) = nP * 255        Case 1            aRGB(0) = nQ * 255            aRGB(1) = nB * 255            aRGB(2) = nP * 255        Case 2            aRGB(0) = nP * 255            aRGB(1) = nB * 255                    aRGB(2) = nT * 255        Case 3            aRGB(0) = nP * 255            aRGB(1) = nQ * 255            aRGB(2) = nB * 255        Case 4            aRGB(0) = nT * 255            aRGB(1) = nP * 255            aRGB(2) = nB * 255        Case 5            aRGB(0) = nB * 255            aRGB(1) = nP * 255            aRGB(2) = nQ * 255        End Select                Else        aRGB(0) = (vB * 255) / 100        aRGB(1) = aRGB(0)        aRGB(2) = aRGB(0)    End If    HSBToRGB = ChrB(Round(aRGB(2), 0)) & ChrB(Round(aRGB(1), 0)) & ChrB(Round(aRGB(0), 0))End FunctionSub CreatValidCode(pSN)    Dim i, j, CurColorHue        ‘ 禁止缓存    Response.Expires = -9999    Response.AddHeader "pragma", "no-cache"    Response.AddHeader "cache-ctrol", "no-cache"    Response.ContentType = "image/bmp"        Call CDGen    Session(pSN) = DigtalStr    ‘记录入Session    Dim PicWidth, PicHeight, FileSize, PicDataSize    PicWidth = nCharCount * nPixelWidth    PicHeight = nPixelHeight    PicDataSize = PicWidth * PicHeight * 3    FileSize = PicDataSize + 54    ‘ 输出BMP文件信息头    Response.BinaryWrite ChrB(66) & ChrB(77) & _        ChrB(FileSize Mod 256) & ChrB((FileSize \ 256) Mod 256) & ChrB((FileSize \ 256 \ 256) Mod 256) & ChrB(FileSize \ 256 \ 256 \ 256) & _        ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & _        ChrB(54) & ChrB(0) & ChrB(0) & ChrB(0)    ‘ 输出BMP位图信息头    Response.BinaryWrite ChrB(40) & ChrB(0) & ChrB(0) & ChrB(0) & _        ChrB(PicWidth Mod 256) & ChrB((PicWidth \ 256) Mod 256) & ChrB((PicWidth \ 256 \ 256) Mod 256) & ChrB(PicWidth \ 256 \ 256 \ 256) & _        ChrB(PicHeight Mod 256) & ChrB((PicHeight \ 256) Mod 256) & ChrB((PicHeight \ 256 \ 256) Mod 256) & ChrB(PicHeight \ 256 \ 256 \ 256) & _        ChrB(1) & ChrB(0) & _        ChrB(24) & ChrB(0) & _        ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & _        ChrB(PicDataSize Mod 256) & ChrB((PicDataSize \ 256) Mod 256) & ChrB((PicDataSize \ 256 \ 256) Mod 256) & ChrB(PicDataSize \ 256 \ 256 \ 256) & _        ChrB(18) & ChrB(11) & ChrB(0) & ChrB(0) & _        ChrB(18) & ChrB(11) & ChrB(0) & ChrB(0) & _        ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & _        ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0)    ‘ 逐点输出位图阵列    If nColorHue = -1 Then        CurColorHue = Int(Rnd * 360)    ElseIf nColorHue = -2 Then        CurColorHue = 0    Else        CurColorHue = nColorHue    End If    For j = 0 To nPixelHeight - 1        For i = 0 To Len(DigtalStr) * nPixelWidth - 1            If nColorHue = -2 Then                Response.BinaryWrite HSBToRGB(CurColorHue, 0, 100 - Buf(nPixelHeight - 1 - j, i))            Else                Response.BinaryWrite HSBToRGB(CurColorHue, Buf(nPixelHeight - 1 - j, i), 100)            End If        Next    NextEnd Sub%>