用asp实现无组件生成验证码的方法2种(4)
End Sub
End Class
Dim mCode
Set mCode = New Com_GifCode_Class
Session("GetCode") = mCode.Create()
mCode.Output()
Set mCode = Nothing
%>
无组件生成验证码-BMP格式
复制代码 代码如下:
Call Com_CreatValidCode("ValidCode")
Sub Com_CreatValidCode(pSN)
'Author: Layen
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'E-mail: support@ssaw.net
' 禁止缓存
Response.Expires = -9999
Response.AddHeader "Pragma","no-cache"
Response.AddHeader "cache-ctrol","no-cache"
Response.ContentType = "Image/BMP"
Randomize
Dim i, ii, iii
Const cOdds = 8 ' 杂点出现的机率
Const cAmount = 36 ' 文字数量
Const cCode = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
' 颜色的数据(字符，背景)
Dim vColorData(1)
vColorData(0) = ChrB(0) & ChrB(0) & ChrB(0) ' 蓝0，绿0，红0（黑色）
vColorData(1) = ChrB(250) & ChrB(236) & ChrB(211) ' 蓝250，绿236，红211（浅蓝色）
' 随机产生字符
Dim vCode(4), vCodes
For i = 0 To 3
vCode(i) = Int(Rnd * cAmount)
vCodes = vCodes & Mid(cCode, vCode(i) + 1, 1)
Next
Session(pSN) = vCodes '记录入Session
' 字符的数据
Dim vNumberData(35)
vNumberData(0) = "1110000111110111101111011110111101001011110100101111
010010111101001011110111101111011110111110000111"
vNumberData(1) = "1111011111110001111111110111111111011111111101111111
110111111111011111111101111111110111111100000111"
vNumberData(2) = "1110000111110111101111011110111111111011111111011111
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