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Uploade filer i ASP

av Øyvind A. Isaksen
 
Denne koden er meget avansert, men fungerer deretter meget bra! På denne måten kan man overføre filer direkte til serveren.

Fil 1: Upload.asp
------------------

<!-- #include file="$upload.asp" -->
<%
Server.ScriptTimeout = 500

Dim Uploader, File
Set Uploader = New FileUploader

Uploader.Upload()


If Uploader.Files.Count = 0 Then
Response.Write "File(s) not uploaded."
Else
For Each File In Uploader.Files.Items

pathEnd = Len(Server.mappath(Request.ServerVariables("PATH_INFO")))-16
path = Left(Server.mappath(Request.ServerVariables("PATH_INFO")),pathEnd)
File.SaveToDisk path

Response.Write "<b>Opplastingen er fullført!</b><br>"
Response.Write "Fil: " & File.FileName & "<br>"
Response.Write "Størrelse: " & File.FileSize & " bytes<br>"
Response.Write "Type: " & File.ContentType & "<br><br>"

Next
End If

Set Uploader = nothing
%>



fil 2: $upload.asp:
----------------------

<%
Class FileUploader
Public Files
Private mcolFormElem

Private Sub Class_Initialize()
Set Files = Server.CreateObject("Scripting.Dictionary")
Set mcolFormElem = Server.CreateObject("Scripting.Dictionary")
End Sub

Private Sub Class_Terminate()
If IsObject(Files) Then
Files.RemoveAll()
Set Files = Nothing
End If
If IsObject(mcolFormElem) Then
mcolFormElem.RemoveAll()
Set mcolFormElem = Nothing
End If
End Sub

Public Property Get Form(sIndex)
Form = ""
If mcolFormElem.Exists(LCase(sIndex)) Then Form = mcolFormElem.Item(LCase(sIndex))
End Property

Public Default Sub Upload()
Dim biData, sInputName
Dim nPosBegin, nPosEnd, nPos, vDataBounds, nDataBoundPos
Dim nPosFile, nPosBound

biData = Request.BinaryRead(Request.TotalBytes)
nPosBegin = 1
nPosEnd = InstrB(nPosBegin, biData, CByteString(Chr(13)))

If (nPosEnd-nPosBegin) <= 0 Then Exit Sub

vDataBounds = MidB(biData, nPosBegin, nPosEnd-nPosBegin)
nDataBoundPos = InstrB(1, biData, vDataBounds)

Do Until nDataBoundPos = InstrB(biData, vDataBounds & CByteString("--"))

nPos = InstrB(nDataBoundPos, biData, CByteString("Content-Disposition"))
nPos = InstrB(nPos, biData, CByteString("name="))
nPosBegin = nPos + 6
nPosEnd = InstrB(nPosBegin, biData, CByteString(Chr(34)))
sInputName = CWideString(MidB(biData, nPosBegin, nPosEnd-nPosBegin))
nPosFile = InstrB(nDataBoundPos, biData, CByteString("filename="))
nPosBound = InstrB(nPosEnd, biData, vDataBounds)

If nPosFile <> 0 And nPosFile < nPosBound Then
Dim oUploadFile, sFileName
Set oUploadFile = New UploadedFile

nPosBegin = nPosFile + 10
nPosEnd = InstrB(nPosBegin, biData, CByteString(Chr(34)))
sFileName = CWideString(MidB(biData, nPosBegin, nPosEnd-nPosBegin))
oUploadFile.FileName = Right(sFileName, Len(sFileName)-InStrRev(sFileName, "\"))

nPos = InstrB(nPosEnd, biData, CByteString("Content-Type:"))
nPosBegin = nPos + 14
nPosEnd = InstrB(nPosBegin, biData, CByteString(Chr(13)))

oUploadFile.ContentType = CWideString(MidB(biData, nPosBegin, nPosEnd-nPosBegin))

nPosBegin = nPosEnd+4
nPosEnd = InstrB(nPosBegin, biData, vDataBounds) - 2
oUploadFile.FileData = MidB(biData, nPosBegin, nPosEnd-nPosBegin)

If oUploadFile.FileSize > 0 Then Files.Add LCase(sInputName), oUploadFile
Else
nPos = InstrB(nPos, biData, CByteString(Chr(13)))
nPosBegin = nPos + 4
nPosEnd = InstrB(nPosBegin, biData, vDataBounds) - 2
If Not mcolFormElem.Exists(LCase(sInputName)) Then mcolFormElem.Add LCase(sInputName), CWideString(MidB(biData, nPosBegin, nPosEnd-nPosBegin))
End If

nDataBoundPos = InstrB(nDataBoundPos + LenB(vDataBounds), biData, vDataBounds)
Loop
End Sub

Private Function CByteString(sString)
Dim nIndex
For nIndex = 1 to Len(sString)
CByteString = CByteString & ChrB(AscB(Mid(sString,nIndex,1)))
Next
End Function

Private Function CWideString(bsString)
Dim nIndex
CWideString =""
For nIndex = 1 to LenB(bsString)
CWideString = CWideString & Chr(AscB(MidB(bsString,nIndex,1)))
Next
End Function
End Class

Class UploadedFile
Public ContentType
Public FileName
Public FileData

Public Property Get FileSize()
FileSize = LenB(FileData)
End Property

Public Sub SaveToDisk(sPath)
Dim oFS, oFile
Dim nIndex

If sPath = "" Or FileName = "" Then Exit Sub
If Mid(sPath, Len(sPath)) <> "\" Then sPath = sPath & "\"

Set oFS = Server.CreateObject("Scripting.FileSystemObject")
If Not oFS.FolderExists(sPath) Then Exit Sub

Set oFile = oFS.CreateTextFile(sPath & FileName, True)

For nIndex = 1 to LenB(FileData)
oFile.Write Chr(AscB(MidB(FileData,nIndex,1)))
Next

oFile.Close
End Sub

Public Sub SaveToDatabase(ByRef oField)
If LenB(FileData) = 0 Then Exit Sub

If IsObject(oField) Then
oField.AppendChunk FileData
End If
End Sub

End Class
%>

------------------------
SE OGSÅ:
http://activedeveloper.dk/download/default.asp?mode=showdownload&id=79
-----------------------

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