Question

我只需要解码一个URL，例如，用％替换％2E。如果一个方法没有内置，我可以破解一个方法，但我的假设是必须有一个已经存在的URL解码工具。

Answer 1

没有

或者某些事情（可能不完整）：

Public Function URLDecode(ByVal strEncodedURL As String) As String
   Dim str As String
   str = strEncodedURL 
   If Len(str) > 0 Then
      str = Replace(str, "&amp", " & ")
      str = Replace(str, "&#03", Chr(39))
      str = Replace(str, "&quo", Chr(34))
      str = Replace(str, "+", " ")
      str = Replace(str, "%2A", "*")
      str = Replace(str, "%40", "@")
      str = Replace(str, "%2D", "-")
      str = Replace(str, "%5F", "_")
      str = Replace(str, "%2B", "+")
      str = Replace(str, "%2E", ".")
      str = Replace(str, "%2F", "/")

      URLDecode = str
  End If

End Function

另外，请查看How can I URL encode a string in Excel VBA?

Answer 2

这是我多年前写的一段摘录

-markus

Public Function URLDecode(sEncodedURL As String) As String

On Error GoTo Catch

Dim iLoop   As Integer
Dim sRtn    As String
Dim sTmp    As String

If Len(sEncodedURL) > 0 Then
    ' Loop through each char
    For iLoop = 1 To Len(sEncodedURL)
        sTmp = Mid(sEncodedURL, iLoop, 1)
        sTmp = Replace(sTmp, "+", " ")
        ' If char is % then get next two chars
        ' and convert from HEX to decimal
        If sTmp = "%" and LEN(sEncodedURL) + 1 > iLoop + 2 Then
            sTmp = Mid(sEncodedURL, iLoop + 1, 2)
            sTmp = Chr(CDec("&H" & sTmp))
            ' Increment loop by 2
            iLoop = iLoop + 2
        End If
        sRtn = sRtn & sTmp
    Next
    URLDecode = sRtn
End If

Finally:
    Exit Function
Catch:
    URLDecode = ""
    Resume Finally
End Function

Answer 3

使用htmlfile对象的EncodeURL和DecodeURL函数（后期绑定）

我从这个网站获得了这个来源：http://cocosoft.kr/442

Function ENCODEURL(varText As Variant, Optional blnEncode = True)
    Static objHtmlfile As Object
    If objHtmlfile Is Nothing Then
        Set objHtmlfile = CreateObject("htmlfile")
        With objHtmlfile.parentWindow
            .execScript "function encode(s) {return encodeURIComponent(s)}", "jscript"
        End With
    End If
    If blnEncode Then
        ENCODEURL = objHtmlfile.parentWindow.encode(varText)
    End If
End Function

Function DECODEURL(varText As Variant, Optional blnEncode = True)
    Static objHtmlfile As Object
    If objHtmlfile Is Nothing Then
        Set objHtmlfile = CreateObject("htmlfile")
        With objHtmlfile.parentWindow
            .execScript "function decode(s) {return decodeURIComponent(s)}", "jscript"
        End With
    End If
    If blnEncode Then
        DECODEURL = objHtmlfile.parentWindow.decode(varText)
    End If
End Function

例如，

str = ENCODEURL("/?&=") 'returns "%2F%3F%26%3D"
str = DECODEURL("%2F%3F%26%3D") 'returns "/?&="

Answer 4

这是另一个答案中张贴的URL中的代码，以防它正常工作时出错。

http://www.freevbcode.com/ShowCode.asp?ID=1512

Public Function URLEncode(StringToEncode As String, Optional _
   UsePlusRatherThanHexForSpace As Boolean = False) As String

Dim TempAns As String
Dim CurChr As Integer
CurChr = 1
Do Until CurChr - 1 = Len(StringToEncode)
  Select Case Asc(Mid(StringToEncode, CurChr, 1))
    Case 48 To 57, 65 To 90, 97 To 122
      TempAns = TempAns & Mid(StringToEncode, CurChr, 1)
    Case 32
      If UsePlusRatherThanHexForSpace = True Then
        TempAns = TempAns & "+"
      Else
        TempAns = TempAns & "%" & Hex(32)
      End If
   Case Else
         TempAns = TempAns & "%" & _
              Format(Hex(Asc(Mid(StringToEncode, _
              CurChr, 1))), "00")
End Select

  CurChr = CurChr + 1
Loop

URLEncode = TempAns
End Function


Public Function URLDecode(StringToDecode As String) As String

Dim TempAns As String
Dim CurChr As Integer

CurChr = 1

Do Until CurChr - 1 = Len(StringToDecode)
  Select Case Mid(StringToDecode, CurChr, 1)
    Case "+"
      TempAns = TempAns & " "
    Case "%"
      TempAns = TempAns & Chr(Val("&h" & _
         Mid(StringToDecode, CurChr + 1, 2)))
       CurChr = CurChr + 2
    Case Else
      TempAns = TempAns & Mid(StringToDecode, CurChr, 1)
  End Select

CurChr = CurChr + 1
Loop

URLDecode = TempAns
End Function


' URLDecode function in Perl for reference
' both VB and Perl versions must return same
'
' sub urldecode{
'  local($val)=@_;
'  $val=~s/\+/ /g;
'  $val=~s/%([0-9A-H]{2})/pack('C',hex($1))/ge;
'  return $val;
' }

VBA是否有任何内置的URL解码？

4 个答案: