以下函数可以解码UTF-8地址的中文关键词。

Function URLDecode(ByVal strIn)  
URLDecode = ""
Dim sl : sl = 1
Dim tl : tl = 1
Dim key : key = "%"
Dim kl : kl = Len(key)
sl = InStr(sl, strIn, key, 1)
Do While sl > 0
If (tl = 1 And sl <> 1) Or tl < sl Then
URLDecode = URLDecode & Mid(strIn, tl, sl - tl)
End If
Dim hh, hi, hl
Dim a
Select Case UCase(Mid(strIn, sl + kl, 1))
Case "U" 'Unicode URLEncode
a = Mid(strIn, sl + kl + 1, 4)
URLDecode = URLDecode & ChrW("&H" & a)
sl = sl + 6
Case "E" 'UTF-8 URLEncode
hh = Mid(strIn, sl + kl, 2)
a = Int("&H" & hh) 'ascii码
If Abs(a) < 128 Then
sl = sl + 3
URLDecode = URLDecode & Chr(a)
Else
hi = Mid(strIn, sl + 3 + kl, 2)
hl = Mid(strIn, sl + 6 + kl, 2)
a = ("&H" & hh And &HF) * 2 ^ 12 Or ("&H" & hi And &H3F) * 2 ^ 6 Or ("&H" & hl And &H3F)
If a < 0 Then a = a + 65536
URLDecode = URLDecode & ChrW(a)
sl = sl + 9
End If
Case Else 'Asc URLEncode
hh = Mid(strIn, sl + kl, 2) '高位
a = Int("&H" & hh) 'ascii码
If Abs(a) < 128 Then
sl = sl + 3
Else
hi = Mid(strIn, sl + 3 + kl, 2) '低位
a = Int("&H" & hh & hi) '非ascii码
sl = sl + 6
End If
URLDecode = URLDecode & Chr(a)
End Select
tl = sl
sl = InStr(sl, strIn, key, 1)
Loop
URLDecode = URLDecode & Mid(strIn, tl)
End Function

以下函数可以编码中文的URL:

Public Function UrlEncode(ByRef szString As String) As String
Dim szChar As String
Dim szTemp As String
Dim szCode As String
Dim szHex As String
Dim szBin As String
Dim iCount1 As Integer
Dim iCount2 As Integer
Dim iStrLen1 As Integer
Dim iStrLen2 As Integer
Dim lResult As Long
Dim lAscVal As Long
szString = Trim$(szString)
iStrLen1 = Len(szString)
For iCount1 = 1 To iStrLen1
szChar = Mid$(szString, iCount1, 1)
lAscVal = AscW(szChar)
If lAscVal >= &H0 And lAscVal <= &HFF Then
If (lAscVal >= &H30 And lAscVal <= &H39) Or _
(lAscVal >= &H41 And lAscVal <= &H5A) Or _
(lAscVal >= &H61 And lAscVal <= &H7A) Then
szCode = szCode & szChar
Else
szCode = szCode & "%" & Hex(AscW(szChar))
End If
Else
szHex = Hex(AscW(szChar))
iStrLen2 = Len(szHex)
For iCount2 = 1 To iStrLen2
szChar = Mid$(szHex, iCount2, 1)
Select Case szChar
Case Is = "0"
szBin = szBin & "0000"
Case Is = "1"
szBin = szBin & "0001"
Case Is = "2"
szBin = szBin & "0010"
Case Is = "3"
szBin = szBin & "0011"
Case Is = "4"
szBin = szBin & "0100"
Case Is = "5"
szBin = szBin & "0101"
Case Is = "6"
szBin = szBin & "0110"
Case Is = "7"
szBin = szBin & "0111"
Case Is = "8"
szBin = szBin & "1000"
Case Is = "9"
szBin = szBin & "1001"
Case Is = "A"
szBin = szBin & "1010"
Case Is = "B"
szBin = szBin & "1011"
Case Is = "C"
szBin = szBin & "1100"
Case Is = "D"
szBin = szBin & "1101"
Case Is = "E"
szBin = szBin & "1110"
Case Is = "F"
szBin = szBin & "1111"
Case Else
End Select
Next iCount2
szTemp = "1110" & Left$(szBin, 4) & "10" & Mid$(szBin, 5, 6) & "10" & Right$(szBin, 6)
For iCount2 = 1 To 24
If Mid$(szTemp, iCount2, 1) = "1" Then
lResult = lResult + 1 * 2 ^ (24 - iCount2)
Else: lResult = lResult + 0 * 2 ^ (24 - iCount2)
End If
Next iCount2
szTemp = Hex(lResult)
szCode = szCode & "%" & Left$(szTemp, 2) & "%" & Mid$(szTemp, 3, 2) & "%" & Right$(szTemp, 2)
End If
szBin = vbNullString
lResult = 0
Next iCount1
UrlEncode = szCode
End Function

函数来自:http://club.excelhome.net/thread-974390-1-1.html

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