'--------------------------------
'自动创建指定的多级文件夹
'strPath为绝对路径
Function AutoCreateFolder(strPath) 'As Boolean
        On Error Resume Next
        Dim astrPath, ulngPath, i, strTmpPath
        Dim objFSO
        If InStr(strPath, "\") <=0 or InStr(strPath, ":") <= 0 Then
                AutoCreateFolder = False
                Exit Function
        End If
        Set objFSO = Server.CreateObject("Scripting.FileSystemObject")
        If objFSO.FolderExists(strPath) Then
                AutoCreateFolder = True
                Exit Function
        End If
        astrPath = Split(strPath, "\")
        ulngPath = UBound(astrPath)
        strTmpPath = ""
        For i = 0 To ulngPath
                strTmpPath = strTmpPath & astrPath(i) & "\"
                If Not objFSO.FolderExists(strTmpPath) Then
                        '创建
                        objFSO.CreateFolder(strTmpPath)
                End If
        Next
        Set objFSO = Nothing
        If Err = 0 Then
                AutoCreateFolder = True
        Else
                AutoCreateFolder = False
        End If
End Function  

'调用方法:

MyPath = Server.MapPath("a/b/c")
If AutoCreateFolder(MyPath) Then
        Response.Write "创建文件夹成功"
Else
        Response.Write "创建文件夹失败"
End If