如何用 VB 或 VB.Net 來撰寫 ASP 的 Server.URLencode 函數
如何用 VB 或 VB.Net 來撰寫 ASP 的 Server.URLencode 編碼函數
大家都知道 ASP 本身的 Server 物件即提供 URLencode函數
但若想在 VB 或 VB.Net 中來進行URLencode的編碼ㄋ ??
請參考底下做法:
VB.Net 程式碼如下 :
Public Function URLEncode(ByRef strEnc As String) As String
Dim strTmp2, strChar, strTmp, strRet As String
Dim lngLoop As Integer
For lngLoop = 0 To strEnc.Length - 1
strChar = strEnc.Substring(lngLoop, 1)
Select Case Asc(strChar)
Case 48 To 57, 65 To 90, 97 To 122
strRet &= strChar
Case 32
strRet &= "+"
Case Else
strTmp = Hex(Asc(strChar))
If strTmp.Length > 4 Then strTmp = strTmp.Substring(4)
strRet &= "%" & strTmp.Substring(0, 2)
If strTmp.Length > 2 Then
strTmp2 = strTmp.Substring(2)
strRet &= IIf(IsNumeric(strTmp.Substring(2, 1)), Chr(Val("&H" & strTmp2)), "%" & strTmp2)
End If
End Select
Next
URLEncode = strRet
End Function
或
Public Function URLenc(ByVal strEnc As String) As String
Dim lngLoop, lngAsc As Long
Dim strChr As String
For lngLoop = 0 To strEnc.Length - 1
strChr = strEnc.Substring(lngLoop, 1)
If Math.Abs(Asc(strChr)) < 255 Then
URLenc &= strChr
Else
lngAsc = Asc(strChr)
If lngAsc < 0 Then lngAsc = lngAsc + 65536
URLenc &= "%" & Hex((lngAsc And -256) \ 255) & "%" & Hex(lngAsc And 255)
End If
Next
End Function
呼叫 :
MessageBox.Show(URLEncode("強力鎯頭 PowerHammer !"))
MessageBox.Show(URLenc("強力鎯頭 PowerHammer !"))
結果顯示 :
%B1j%A4O%EE%CF%C0Y+PowerHammer+%21
%B1%6A%A4%4F%EE%CF%C0%59 PowerHammer !
================================================================
VB6 程式碼如下 :
Public Function URLEncode(strEnc As String) As String
Dim strChar As String, strTmp As String, strTmp2 As String, strRet As String
Dim lngLoop As Long
For lngLoop = 1 To Len(strEnc)
strChar = Mid(strEnc, lngLoop, 1)
Select Case Asc(strChar)
Case 48 To 57, 65 To 90, 97 To 122
strRet = strRet & strChar
Case 32
strRet = strRet & "+"
Case Else
strTmp = Format(Hex(Asc(strChar)), "00")
strRet = strRet & "%" & Left(strTmp, 2)
strTmp2 = Mid(strTmp, 3, 2)
If Len(strTmp) > 3 Then
strRet = strRet & IIf(IsNumeric(Mid(strTmp, 3, 1)), Chr(Val("&H" & strTmp2)), "%" & strTmp2)
End If
End Select
Next
URLEncode = strRet
End Function
或
Public Function URLenc(strEnc As String) As String
Dim lngLoop As Long, lngAsc As Long
Dim strChr As String
For lngLoop = 1 To Len(strEnc)
strChr = Mid(strEnc, lngLoop, 1)
If Abs(Asc(strChr)) < 255 Then
URLenc = URLenc & strChr
Else
lngAsc = Asc(strChr)
If lngAsc < 0 Then lngAsc = lngAsc + 65536
URLenc = URLenc & "%" & Hex((lngAsc And -256) \ 255) & "%" & Hex(lngAsc And 255)
End If
Next
End Function
呼叫 :
MsgBox URLEncode("強力鎯頭 PowerHammer !")
MsgBox URLenc("強力鎯頭 PowerHammer !")
結果顯示 :
%B1j%A4O%EE%CF%C0Y+PowerHammer+%21
%B1%6A%A4%4F%EE%CF%C0%59 PowerHammer !
================================================================
ASP 程式碼如下(多此一舉,因為ASP本來就有Server.URLencode) :
Public Function URLEncode(strEnc)
Dim strChr, intAsc, strTmp, strTmp2, strRet, lngLoop
For lngLoop = 1 To Len(strEnc)
strChr = Mid(strEnc, lngLoop, 1)
intAsc = Asc(strChr)
If ((intAsc < 58) And (intAsc > 47)) Or ((intAsc < 91) And (intAsc > 64)) Or ((intAsc < 123) And (intAsc > 96)) Then
strRet = strRet & strChr
ElseIf intAsc = 32 Then
strRet = strRet & "+"
Else
strTmp = Hex(Asc(strChr))
strRet = strRet & "%" & Right("00" & Left(strTmp, 2), 2)
strTmp2 = Mid(strTmp, 3, 2)
If Len(strTmp) > 3 Then
If IsNumeric(Mid(strTmp, 3, 1)) Then
strRet = strRet & Chr(CInt("&H" & strTmp2))
Else
strRet = strRet & "%" & strTmp2
End If
End If
End If
Next
URLEncode = strRet
End Function
或
Public Function URLenc(strEnc)
Dim lngLoop, lngAsc, strChr
For lngLoop = 1 To Len(strEnc)
strChr = Mid(strEnc, lngLoop, 1)
If Abs(Asc(strChr)) < 255 Then
URLenc = URLenc & strChr
Else
lngAsc = Asc(strChr)
If lngAsc < 0 Then lngAsc = lngAsc + 65536
URLenc = URLenc & "%" & Hex((lngAsc And -256) \ 255) & "%" & Hex(lngAsc And 255)
End If
Next
End Function
呼叫 :
Response.write URLEncode("強力鎯頭 PowerHammer !")
Response.write URLenc("強力鎯頭 PowerHammer !")
結果顯示 :
%B1j%A4O%EE%CF%C0Y+PowerHammer+%21
%B1%6A%A4%4F%EE%CF%C0%59 PowerHammer !
