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ASP验证码文件

<%
Call Com_CreatValidCode()
Sub Com_CreatValidCode() ‘ 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 cAmount = 36 ‘ 文字数量
Const cCode = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" ‘ 颜色的数据(字符,背景)
Dim vColorData(2)
a=Rnd * 256
b=Rnd * 256
c=Rnd * 256
vColorData(0) = ChrB(a) & ChrB(b) & ChrB(c) ‘vColorData(0) = ChrB(0) & ChrB(0) & ChrB(0) ‘ 蓝0,绿0,红0(黑色)0的位置颜色
vColorData(1) = ChrB(255) & ChrB(255) & ChrB(255) ‘ 蓝250,绿236,红211(白色) 1的位置颜色 ‘ 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("CheckCode") = vCodes ‘记录入Session ‘ 字符的数据
Dim vNumberData(36)
vNumberData(0)="1110000111110111101111011110111101001011110100101111010010111101001011110111101111011110111110000111"
vNumberData(1)="1111011111110001111111110111111111011111111101111111110111111111011111111101111111110111111100000111"
vNumberData(2)="1110000111110111101111011110111111111011111111011111111011111111011111111011111111011110111100000011"
vNumberData(3)="1110000111110111101111011110111111110111111100111111111101111111111011110111101111011110111110000111"
vNumberData(4)="1111101111111110111111110011111110101111110110111111011011111100000011111110111111111011111111000011"
vNumberData(5)="1100000011110111111111011111111101000111110011101111111110111111111011110111101111011110111110000111"
vNumberData(6)="1111000111111011101111011111111101111111110100011111001110111101111011110111101111011110111110000111"
vNumberData(7)="1100000011110111011111011101111111101111111110111111110111111111011111111101111111110111111111011111"
vNumberData(8)="1110000111110111101111011110111101111011111000011111101101111101111011110111101111011110111110000111"
vNumberData(9)="1110001111110111011111011110111101111011110111001111100010111111111011111111101111011101111110001111"
vNumberData(10)="1111011111111101111111101011111110101111111010111111101011111100000111110111011111011101111000100011"
vNumberData(11)="1000000111110111101111011110111101110111110000111111011101111101111011110111101111011110111000000111"
vNumberData(12)="1110000011110111101110111110111011111111101111111110111111111011111111101111101111011101111110001111"
vNumberData(13)="1000001111110111011111011110111101111011110111101111011110111101111011110111101111011101111000001111"
vNumberData(14)="1000000111110111101111011011111101101111110000111111011011111101101111110111111111011110111000000111"
vNumberData(15)="1000000111110111101111011011111101101111110000111111011011111101101111110111111111011111111000111111"
vNumberData(16)="1110000111110111011110111101111011111111101111111110111111111011100011101111011111011101111110001111"
vNumberData(17)="1000100011110111011111011101111101110111110000011111011101111101110111110111011111011101111000100011"
vNumberData(18)="1100000111111101111111110111111111011111111101111111110111111111011111111101111111110111111100000111"
vNumberData(19)="1110000011111110111111111011111111101111111110111111111011111111101111111110111110111011111000011111"
vNumberData(20)="1000100011110111011111011011111101011111110001111111010111111101101111110110111111011101111000100011"
vNumberData(21)="1000111111110111111111011111111101111111110111111111011111111101111111110111111111011110111000000011"
vNumberData(22)="1000100011110010011111001001111100100111110101011111010101111101010111110101011111010101111001010011"
vNumberData(23)="1000100011110011011111001101111101010111110101011111010101111101100111110110011111011001111000110111"
vNumberData(24)="1110001111110111011110111110111011111011101111101110111110111011111011101111101111011101111110001111"
vNumberData(25)="1000000111110111101111011110111101111011110000011111011111111101111111110111111111011111111000111111"
vNumberData(26)="1110001111110111011110111110111011111011101111101110111110111011111011101001101111011001111110001011"
vNumberData(27)="1000001111110111011111011101111101110111110000111111010111111101101111110110111111011101111000110011"
vNumberData(28)="1110000011110111101111011110111101111111111001111111111001111111111011110111101111011110111100000111"
vNumberData(29)="1000000011101101101111110111111111011111111101111111110111111111011111111101111111110111111110001111"
vNumberData(30)="1000100011110111011111011101111101110111110111011111011101111101110111110111011111011101111110001111"
vNumberData(31)="1000100011110111011111011101111101110111111010111111101011111110101111111010111111110111111111011111"
vNumberData(32)="1001010011110101011111010101111101010111110101011111001001111110101111111010111111101011111110101111"
vNumberData(33)="1000100011110111011111101011111110101111111101111111110111111110101111111010111111011101111000100011"
vNumberData(34)="1000100011110111011111011101111110101111111010111111110111111111011111111101111111110111111110001111"
vNumberData(35)="1100000011110111011111111101111111101111111110111111110111111111011111111011111111101110111100000011" ‘ 输出图像文件头
Response.BinaryWrite ChrB(66)&ChrB(77)&ChrB(230)&ChrB(4)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(54)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(40)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(40)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(10)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(1)&ChrB(0)‘输出图像信息头
Response.BinaryWrite ChrB(24)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(0)&ChrB(176)&ChrB(4)&ChrB(0)&ChrB(0)&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)
For i = 9 To 0 Step -1 ‘ 历经所有行
For ii = 0 To 3 ‘ 历经所有字
For iii = 1 To 10 ‘ 历经所有像素 ‘ 逐行、逐字、逐像素地输出图像数据 ,仔细分析这里。
If Rnd * 99 + 1 <3 Then ‘ 随机生成杂点 5是出现机率,可修改
Response.BinaryWrite vColorData(0)
Else
Response.BinaryWrite vColorData(Mid(vNumberData(vCode(ii)), i * 10 + iii, 1))
End If
Next
Next
Next
End Sub
%>

作者:Wilber 类别:编程学习 时间:2010/12/25 15:14:37 评论:0 点击191
标签:  ASP,验证码
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