asp 檔案上傳類代碼

dim oUpFileStream

Class upload_file
 
dim Form,File,Version
 
Private Sub Class_Initialize
   '定義變數
  dim RequestBinDate,sStart,bCrLf,sInfo,iInfoStart,iInfoEnd,tStream,iStart,oFileInfo
  dim iFileSize,sFilePath,sFileType,sFormvalue,sFileName
  dim iFindStart,iFindEnd
  dim iFormStart,iFormEnd,sFormName
   '代碼開始
  Version="無組件上傳類 Version 0.96"
  set Form = Server.CreateObject("Scripting.Dictionary")
  set File = Server.CreateObject("Scripting.Dictionary")
  if Request.TotalBytes < 1 then Exit Sub
  set tStream = Server.CreateObject("adodb.stream")
  set oUpFileStream = Server.CreateObject("adodb.stream")
  oUpFileStream.Type = 1
  oUpFileStream.Mode = 3
  oUpFileStream.Open
  oUpFileStream.Write Request.BinaryRead(Request.TotalBytes)
  oUpFileStream.Position=0
  RequestBinDate = oUpFileStream.Read
  iFormEnd = oUpFileStream.Size
  bCrLf = chrB(13) & chrB(10)
  '取得每個項目之間的分隔字元
  sStart = MidB(RequestBinDate,1, InStrB(1,RequestBinDate,bCrLf)-1)
  iStart = LenB (sStart)
  iFormStart = iStart+2
  '分解項目
  Do
    iInfoEnd = InStrB(iFormStart,RequestBinDate,bCrLf & bCrLf)+3
    tStream.Type = 1
    tStream.Mode = 3
    tStream.Open
    oUpFileStream.Position = iFormStart
    oUpFileStream.CopyTo tStream,iInfoEnd-iFormStart
    tStream.Position = 0
    tStream.Type = 2
    tStream.Charset ="gb2312"
    sInfo = tStream.ReadText     
    '取得表單項目名稱
    iFormStart = InStrB(iInfoEnd,RequestBinDate,sStart)-1
    iFindStart = InStr(22,sInfo,"name=""",1)+6
    iFindEnd = InStr(iFindStart,sInfo,"""",1)
    sFormName = Mid (sinfo,iFindStart,iFindEnd-iFindStart)
    '如果是檔案
    if InStr (45,sInfo,"filename=""",1) > 0 then
      set oFileInfo= new FileInfo
      '取得檔案屬性
      iFindStart = InStr(iFindEnd,sInfo,"filename=""",1)+10
      iFindEnd = InStr(iFindStart,sInfo,"""",1)
      sFileName = Mid (sinfo,iFindStart,iFindEnd-iFindStart)
      oFileInfo.FileName = GetFileName(sFileName)
      oFileInfo.FilePath = GetFilePath(sFileName)
      oFileInfo.FileExt = GetFileExt(sFileName)
      iFindStart = InStr(iFindEnd,sInfo,"Content-Type: ",1)+14
      iFindEnd = InStr(iFindStart,sInfo,vbCr)
      oFileInfo.FileType = Mid (sinfo,iFindStart,iFindEnd-iFindStart)
      oFileInfo.FileStart = iInfoEnd
      oFileInfo.FileSize = iFormStart -iInfoEnd -2
      oFileInfo.FormName = sFormName
      file.add sFormName,oFileInfo
    else
    '如果是表單項目
      tStream.Close
      tStream.Type = 1
      tStream.Mode = 3
      tStream.Open
      oUpFileStream.Position = iInfoEnd
      oUpFileStream.CopyTo tStream,iFormStart-iInfoEnd-2
      tStream.Position = 0
      tStream.Type = 2
      tStream.Charset = "gb2312"
      sFormvalue = tStream.ReadText
      form.Add sFormName,sFormvalue
    end if
    tStream.Close
    iFormStart = iFormStart+iStart+2
    '如果到檔案尾了就退出
    loop until (iFormStart+2) = iFormEnd
  RequestBinDate=""
  set tStream = nothing
End Sub

Private Sub Class_Terminate 
  '清除變數及對像
  if not Request.TotalBytes<1 then
    oUpFileStream.Close
    set oUpFileStream =nothing
    end if
  Form.RemoveAll
  File.RemoveAll
  set Form=nothing
  set File=nothing
End Sub
  
 '取得檔案路徑
Private function GetFilePath(FullPath)
  If FullPath <> "" Then
    GetFilePath = left(FullPath,InStrRev(FullPath, ""))
    Else
    GetFilePath = ""
  End If
End function
 
'取得檔案名稱
Private function GetFileName(FullPath)
  If FullPath <> "" Then
    GetFileName = mid(FullPath,InStrRev(FullPath, "")+1)
    Else
    GetFileName = ""
  End If
End function

'取得副檔名
Private function GetFileExt(FullPath)
  If FullPath <> "" Then
    GetFileExt = mid(FullPath,InStrRev(FullPath, ".")+1)
    Else
    GetFileExt = ""
  End If
End function

End Class

'檔案屬性類
Class FileInfo
  dim FormName,FileName,FilePath,FileSize,FileType,FileStart,FileExt
  Private Sub Class_Initialize
    FileName = ""
    FilePath = ""
    FileSize = 0
    FileStart= 0
    FormName = ""
    FileType = ""
    FileExt = ""
  End Sub
 
'儲存檔案方法
 Public function SaveToFile(FullPath)
    dim oFileStream,ErrorChar,i
    SaveToFile=1
    if trim(fullpath)="" or right(fullpath,1)="/" then exit function
    set oFileStream=CreateObject("Adodb.Stream")
    oFileStream.Type=1
    oFileStream.Mode=3
    oFileStream.Open
    oUpFileStream.position=FileStart
    oUpFileStream.copyto oFileStream,FileSize
    oFileStream.SaveToFile FullPath,2
    oFileStream.Close
    set oFileStream=nothing
    SaveToFile=0
  end function
End Class