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'----------------------------------------------------------------------
'转发时请保留此声明信息,这段声明不并会影响你的速度!
'*******************无组件上传类   ********************************
'修改者:梁无惧
'电子邮件:yjlrb@21cn.com
'网站:http://www.25cn.com
'原作者:稻香老农
'原作者网站:http://www.5xsoft.com
'声明:此上传类是在化境编程界发布的无组件上传类的基础上修改的.
'在与化境编程界无组件上传类相比,速度快了将近50倍,当上传4M大小的文件时
'服务器只需要10秒就可以处理完,是目前最快的无组件上传程序,当前版本为0.96
'源代码公开,免费使用,对于商业用途,请与作者联系
'文件属性：例如上传文件为c:\myfile\doc.txt
'FileName文件名   字符串"doc.txt"
'FileSize文件大小 数值   1210
'FileType文件类型 字符串"text/plain"
'FileExt 文件扩展名   字符串"txt"
'FilePath文件原路径   字符串"c:\myfile"
'使用时注意事项:
'由于Scripting.Dictionary区分大小写,所以在网页及ASP页的项目名都要相同的大小
'写,如果人习惯用大写或小写,为了防止出错的话,可以把
'sFormName = Mid (sinfo,iFindStart,iFindEnd-iFindStart)
'改为
'(小写者)sFormName = LCase(Mid (sinfo,iFindStart,iFindEnd-iFindStart))
'(大写者)sFormName = UCase(Mid (sinfo,iFindStart,iFindEnd-iFindStart))
'**********************************************************************
'----------------------------------------------------------------------
dim oUpFileStream

Class upload_file
  
dim Form,File,Version
  
Private Sub Class_Initialize 
   '定义变量
  dim RequestBinDate,sStart,bCrLf,sInfo,iInfoStart,iInfoEnd,tStream,iStart,oFileInfo
  dim iFileSize,sFilePath,sFileType,sFormvalue,sFileName
  dim iFindStart,iFindEnd
  dim iFormStart,iFormEnd,sFormName
   '代码开始
  Version="无组件上传类 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)
  '取得每个项目之间的分隔符
  sStart = MidB(RequestBinDate,1, InStrB(1,RequestBinDate,bCrLf)-1)
  iStart = LenB (sStart)
  iFormStart = iStart+2
  '分解项目
  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  
'取得表单项目名称
iFormStart = InStrB(iInfoEnd,RequestBinDate,sStart)-1
iFindStart = InStr(22,sInfo,"name=""",1)+6
iFindEnd = InStr(iFindStart,sInfo,"""",1)
sFormName = Mid (sinfo,iFindStart,iFindEnd-iFindStart)
'如果是文件
if InStr (45,sInfo,"filename=""",1) > 0 then
  set oFileInfo= new FileInfo
  '取得文件属性
  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
'如果是表单项目
  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
'如果到文件尾了就退出
loop until (iFormStart+2) = iFormEnd 
  RequestBinDate=""
  set tStream = nothing
End Sub

Private Sub Class_Terminate  
  '清除变量及对像
  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
   
 '取得文件路径
Private function GetFilePath(FullPath)
  If FullPath <> "" Then
GetFilePath = left(FullPath,InStrRev(FullPath, "\"))
Else
GetFilePath = ""
  End If
End function
 
'取得文件名
Private function GetFileName(FullPath)
  If FullPath <> "" Then
GetFileName = mid(FullPath,InStrRev(FullPath, "\")+1)
Else
GetFileName = ""
  End If
End function

'取得扩展名
Private function GetFileExt(FullPath)
  If FullPath <> "" Then
GetFileExt = mid(FullPath,InStrRev(FullPath, ".")+1)
Else
GetFileExt = ""
  End If
End function

End Class

'文件属性类
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
  
'保存文件方法
 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
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