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将utf-8转换为unicode
'Utf8 转换为 Unicode
Public Function UTF8_Decode(ByVal s As String) As String
Dim lUtf8Size As Long
Dim sBuffer As String
Dim lBufferSize As Long
Dim lResult As Long
Dim b() As Byte
If LenB(s) Then
On Error GoTo EndFunction
b = StrConv(s, vbFromUnicode)
lUtf8Size = UBound(b) + 1
On Error GoTo 0
'Set buffer for longest possible string i.e. each byte is
'ANSI<=&HFF, thus 1 unicode(2 bytes)for every utf-8 character.
lBufferSize = lUtf8Size * 2
sBuffer = String$(lBufferSize, vbNullChar)
'Translate using code page 65001(UTF-8)
lResult = MultiByteToWideChar(CP_UTF8, 0, b(0), _
lUtf8Size, StrPtr(sBuffer), lBufferSize)
'Trim result to actual length
If lResult Then
UTF8_Decode = Left$(sBuffer, lResult)
'Debug.Print UTF8_Decode
End If
End If
EndFunction:
End Function
'Unicode转换为UTF-8.
Public Function UTF8_Encode(ByVal strUnicode As String) As String 'ByVal strUnicode As Byte
Dim TLen As Long
TLen = Len(strUnicode)
If TLen = 0 Then Exit Function
Dim lBufferSize As Long
Dim lResult As Long
Dim b() As Byte
'Set buffer for longest possible string.
lBufferSize = TLen * 3 + 1
ReDim b(lBufferSize - 1)
'Translate using code page 65001(UTF-8).
lResult = WideCharToMultiByte(CP_UTF8, 0, StrPtr(strUnicode), _
TLen, b(0), lBufferSize, vbNullString, 0)
'Trim result to actual length.
If lResult Then
lResult = lResult - 1
ReDim Preserve b(lResult)
UTF8_Encode = StrConv(b, vbUnicode)
End If
End Function
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