code.asp

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<%@CodePage="65001"%>
<%
Call MyCode("code")
Sub MyCode(YCMS)
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=2 ' 杂点出现的机率
Const cAmount=10 ' 文字数量
Const cCode="0123456789"
' 颜色的数据(字符，背景)
Dim vColorData(1),vColorRandom(10)
vColorData(0)=ChrB(Int(Rnd*25)+100)&ChrB(Int(Rnd*65)+100)&ChrB(Int(Rnd*95)+100) ' 蓝0，绿0，红0（黑色）
vColorRandom(0)=ChrB(150)&ChrB(0)&ChrB(0)
vColorRandom(1)=ChrB(0)&ChrB(150)&ChrB(0)
vColorRandom(2)=ChrB(0)&ChrB(0)&ChrB(150)
vColorRandom(3)=ChrB(0)&ChrB(50)&ChrB(150)
vColorRandom(4)=ChrB(150)&ChrB(50)&ChrB(0)
vColorRandom(5)=ChrB(150)&ChrB(0)&ChrB(150)
vColorRandom(6)=ChrB(150)&ChrB(100)&ChrB(10)
vColorRandom(7)=ChrB(150)&ChrB(40)&ChrB(120)
vColorRandom(8)=ChrB(150)&ChrB(0)&ChrB(250)
vColorRandom(9)=ChrB(100)&ChrB(100)&ChrB(100)
vColorRandom(10)=ChrB(50)&ChrB(50)&ChrB(50)
vColorData(0)=vColorRandom(0)
vColorData(1)=ChrB(250)&ChrB(250)&ChrB(255) '背景色 蓝250，绿236，红211（浅蓝色）
Dim vCode(4),vCodes,vCodeColors(4)
For i=0 To 3
vCodeColors(i)=vColorRandom(Int(Rnd * 10))
vCode(i)=Int(Rnd * cAmount)
vCodes=vCodes&Mid(cCode, vCode(i) + 1, 1)
Next
Session(YCMS)=vCodes 
Dim vNumberData(35)
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"
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)
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
vColorData(0)=vCodeColors(ii)
If Rnd * 99 + 1 < cOdds Then ' 随机生成杂点
Response.BinaryWrite vColorData(0)
Else
Response.BinaryWrite vColorData(Mid(vNumberData(vCode(ii)), i * 10 + iii, 1))
End If
Next
Next
Next
End Sub
%>