【下载文档: 在Z-BLOG可用的新版asp的GIF验证码[V70404].txt 】
在Z-BLOG可用的新版ASP的GIF验证码[V70404]
复制下面代码，存为c_validcode.asp上传到function下就可以了复制代码 代码如下:<%@ CODEPAGE=65001 %> <% '/////////////////////////////////////////////////////////////////////////////// '// Z-Blog '// 作 者: 朱煊(zx.asd),sipo '// 版权所有: RainbowSoft Studio '// 技术支持: rainbowsoft@163.com '// 单元名称: c_validcode.asp '// 开始时间: 2007-4-4 '// 最后修改: 2007-4-4 '// 备 注: www.dc9.cn '/////////////////////////////////////////////////////////////////////////////// %> <% Option Explicit %> <% On Error Resume Next %> <% '.VerifyCode GetVerifyNumber, False Class Com_GifCode_Class Public Noisy, Count, Width, Height, Angle, Offset, Border Private Graph(), Margin(3) Private Sub Class_Initialize() Randomize Noisy = 7 ' 干扰点出现的概率 Count = 5 ' 字符数量 Width = 60 ' 图片宽度 Height = 20 ' 图片高度 Angle = 3 ' 角度随机变化量 Offset = 10 ' 偏移随机变化量 Border = 2 ' 边框大小 End Sub Public Function Create(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 Dim code Set mCode = New Com_GifCode_Class mCode.Create(GetVerifyNumber) mCode.Output() Set mCode = Nothing %>由于原验证码过于简单，导致zblogger们饱受垃圾评论与引用之苦，下一版本将集成该验证码。 该验证码是根据网络上流传的一个源代码修改而来。 另，近期新的反垃圾评论与引用工具将与大家见面。
