实现UTF8转换GB2312国标码的asp代码

'个人代码风格注释（变量名中第一个小写字母表表示变量类型）
'i:为Integer型;
's:为String;
Function U2UTF8(Byval a_iNum)
Dim sResult,sUTF8
Dim iTemp,iHexNum,i

iHexNum = Trim(a_iNum)

If iHexNum = “” Then
Exit Function
End If

sResult = “”

If (iHexNum 128) Then
sResult = sResult iHexNum
ElseIf (iHexNum 2048) Then
sResult = ChrB(H80 + (iHexNum And H3F))
iHexNum = iHexNum \ H40
sResult = ChrB(HC0 + (iHexNum And H1F)) sResult
ElseIf (iHexNum 65536) Then
sResult = ChrB(H80 + (iHexNum And H3F))
iHexNum = iHexNum \ H40
sResult = ChrB(H80 + (iHexNum And H3F)) sResult
iHexNum = iHexNum \ H40
sResult = ChrB(HE0 + (iHexNum And HF)) sResult
End If

U2UTF8 = sResult
End Function

Function GB2UTF(Byval a_sStr)
Dim sGB,sResult,sTemp
Dim iLen,iUnicode,iTemp,i

sGB = Trim(a_sStr)
iLen = Len(sGB)
For i = 1 To iLen
sTemp = Mid(sGB,i,1)
iTemp = Asc(sTemp)

If (iTemp>127 OR iTemp0) Then
iUnicode = AscW(sTemp)
If iUnicode0 Then
iUnicode = iUnicode + 65536
End If
Else
iUnicode = iTemp
End If

sResult = sResult U2UTF8(iUnicode)
Next

GB2UTF = sResult
End Function

'调用方法
Response.BinaryWrite(GB2UTF(“中国人”))