ASP文件上传工具(只能上传一定大小文件)(3)

      Exit Function
      Else
      CheckFileExt = False
      End if
    Next
  End Function
  '检查上传文件夹是否存在，不存在则创建文件夹
  Function CheckAndCreateFolder(FolderName)
    fldr = Server.Mappath(FolderName)
    Set fso = CreateObject("Scripting.FileSystemObject")
    If Not fso.FolderExists(fldr) Then
      fso.CreateFolder(fldr)
    End If
    Set fso = Nothing
  End Function
'检查文件是否存在，重命名存在文件
Function CheckFileExists(FileName)
  Set fso=Server.CreateObject("Scripting.FileSystemObject")
  If fso.FileExists(SaveFile) Then
    i=1
    msg=True
    Do While msg
      CheckFileExists = Replace(SaveFile,Right(SaveFile,4),"_" & i & Right(SaveFile,4))
      If not fso.FileExists(CheckFileExists) Then
        msg=False
      End If
      i=i+1
    Loop
  Else
    CheckFileExists = FileName
  End If
  Set fso=Nothing
End Function
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