asp-classicでファイルをアップロードする方法
ユーザーがファイルまたは圧縮フォルダーをアップロードできるasp-classicのページを作成したいと思います。
私はGoogleで検索しましたが、見つかったすべてのソリューションはサードパーティのファイルを使用しています。しかし、私はそれらのファイルを機能させることができませんでした。
私がそれを行ってから長い時間ですが、サードパーティのコンポーネントなしでアップロードを使用しました。vbscriptクラスは2つだけです（ソリューションクレジットはLewis Motenに提供されます）。
この「ルイスモーテンの解決策」は、まだ野生で見つけることができるようです
ClsUploadファイルを含める場合、以降のアップロードプロセスは次のように簡単です。
Dim objUpload
Dim strFile, strPath
' Instantiate Upload Class '
Set objUpload = New clsUpload
strFile = objUpload.Fields("file").FileName
strPath = server.mappath("/data") & "/" & strFile
' Save the binary data to the file system '
objUpload("file").SaveAs strPath
Set objUpload = Nothing
サーバー側にとってはこれですべてです...
クライアント側では、ファイル入力が必要です
<form name="Upload" enctype="multipart/form-data" method="post" action="clsUpload.asp">
<div>Upload file: </div>
<div><INPUT TYPE="file" NAME="file" >
<input type="button" name="FileUpload" value="Upload File"> </div>
</form>
お役に立てれば..
2014年6月23日編集
Daveが指摘したようにWut「実際の」ソリューションへの私の参照は、提供されたコードスニペットと完全に一致していません。これにより、これまで使用してきた完全なクラス（コメントは30000 SO制限）を下回るように調整されました http://planet-source-code.com/vb/にあるLewis Motenソリューションの初期バージョンでした。 scripts/ShowCode.asp？txtCodeId = 8525＆lngWId = 4
1）clsUpload.aspの内容
<!--METADATA
TYPE="TypeLib"
NAME="Microsoft ActiveX Data Objects 2.5 Library"
UUID="{00000205-0000-0010-8000-00AA006D2EA4}"
VERSION="2.5"
-->
<!--#INCLUDE FILE="clsField.asp"-->
<%
' ------------------------------------------------------------------------------
' Author: Lewis Moten
' Date: March 19, 2002
' ------------------------------------------------------------------------------
' Upload class retrieves multi-part form data posted to web page
' and parses it into objects that are easy to interface with.
' Requires MDAC (ADODB) COM components found on most servers today
' Additional compenents are not necessary.
'
Class clsUpload
' ------------------------------------------------------------------------------
Private mbinData ' bytes visitor sent to server
Private mlngChunkIndex ' byte where next chunk starts
Private mlngBytesReceived ' length of data
Private mstrDelimiter ' Delimiter between multipart/form-data (43 chars)
Private CR ' ANSI Carriage Return
Private LF ' ANSI Line Feed
Private CRLF ' ANSI Carriage Return & Line Feed
Private mobjFieldAry() ' Array to hold field objects
Private mlngCount ' Number of fields parsed
' ------------------------------------------------------------------------------
Private Sub RequestData
Dim llngLength ' Number of bytes received
' Determine number bytes visitor sent
mlngBytesReceived = Request.TotalBytes
' Store bytes recieved from visitor
mbinData = Request.BinaryRead(mlngBytesReceived)
End Sub
' ------------------------------------------------------------------------------
Private Sub ParseDelimiter()
' Delimiter seperates multiple pieces of form data
' "around" 43 characters in length
' next character afterwards is carriage return (except last line has two --)
' first part of delmiter is dashes followed by hex number
' hex number is possibly the browsers session id?
' Examples:
' -----------------------------7d230d1f940246
' -----------------------------7d22ee291ae0114
mstrDelimiter = MidB(mbinData, 1, InStrB(1, mbinData, CRLF) - 1)
End Sub
' ------------------------------------------------------------------------------
Private Sub ParseData()
' This procedure loops through each section (chunk) found within the
' delimiters and sends them to the parse chunk routine
Dim llngStart ' start position of chunk data
Dim llngLength ' Length of chunk
Dim llngEnd ' Last position of chunk data
Dim lbinChunk ' Binary contents of chunk
' Initialize at first character
llngStart = 1
' Find start position
llngStart = InStrB(llngStart, mbinData, mstrDelimiter & CRLF)
' While the start posotion was found
While Not llngStart = 0
' Find the end position (after the start position)
llngEnd = InStrB(llngStart + 1, mbinData, mstrDelimiter) - 2
' Determine Length of chunk
llngLength = llngEnd - llngStart
' Pull out the chunk
lbinChunk = MidB(mbinData, llngStart, llngLength)
' Parse the chunk
Call ParseChunk(lbinChunk)
' Look for next chunk after the start position
llngStart = InStrB(llngStart + 1, mbinData, mstrDelimiter & CRLF)
Wend
End Sub
' ------------------------------------------------------------------------------
Private Sub ParseChunk(ByRef pbinChunk)
' This procedure gets a chunk passed to it and parses its contents.
' There is a general format that the chunk follows.
' First, the deliminator appears
' Next, headers are listed on each line that define properties of the chunk.
' Content-Disposition: form-data: name="File1"; filename="C:\Photo.gif"
' Content-Type: image/gif
' After this, a blank line appears and is followed by the binary data.
Dim lstrName ' Name of field
Dim lstrFileName ' File name of binary data
Dim lstrContentType ' Content type of binary data
Dim lbinData ' Binary data
Dim lstrDisposition ' Content Disposition
Dim lstrValue ' Value of field
' Parse out the content dispostion
lstrDisposition = ParseDisposition(pbinChunk)
' And Parse the Name
lstrName = ParseName(lstrDisposition)
' And the file name
lstrFileName = ParseFileName(lstrDisposition)
' Parse out the Content Type
lstrContentType = ParseContentType(pbinChunk)
' If the content type is not defined, then assume the
' field is a normal form field
If lstrContentType = "" Then
' Parse Binary Data as Unicode
lstrValue = CStrU(ParseBinaryData(pbinChunk))
' Else assume the field is binary data
Else
' Parse Binary Data
lbinData = ParseBinaryData(pbinChunk)
End If
' Add a new field
Call AddField(lstrName, lstrFileName, lstrContentType, lstrValue, lbinData)
End Sub
' ------------------------------------------------------------------------------
Private Sub AddField(ByRef pstrName, ByRef pstrFileName, ByRef pstrContentType, ByRef pstrValue, ByRef pbinData)
Dim lobjField ' Field object class
' Add a new index to the field array
' Make certain not to destroy current fields
ReDim Preserve mobjFieldAry(mlngCount)
' Create new field object
Set lobjField = New clsField
' Set field properties
lobjField.Name = pstrName
lobjField.FilePath = pstrFileName
lobjField.ContentType = pstrContentType
' If field is not a binary file
If LenB(pbinData) = 0 Then
lobjField.BinaryData = ChrB(0)
lobjField.Value = pstrValue
lobjField.Length = Len(pstrValue)
' Else field is a binary file
Else
lobjField.BinaryData = pbinData
lobjField.Length = LenB(pbinData)
lobjField.Value = ""
End If
' Set field array index to new field
Set mobjFieldAry(mlngCount) = lobjField
' Incriment field count
mlngCount = mlngCount + 1
End Sub
' ------------------------------------------------------------------------------
Private Function ParseBinaryData(ByRef pbinChunk)
' Parses binary content of the chunk
Dim llngStart ' Start Position
' Find first occurence of a blank line
llngStart = InStrB(1, pbinChunk, CRLF & CRLF)
' If it doesn't exist, then return nothing
If llngStart = 0 Then Exit Function
' Incriment start to pass carriage returns and line feeds
llngStart = llngStart + 4
' Return the last part of the chunk after the start position
ParseBinaryData = MidB(pbinChunk, llngStart)
End Function
' ------------------------------------------------------------------------------
Private Function ParseContentType(ByRef pbinChunk)
' Parses the content type of a binary file.
' example: image/gif is the content type of a GIF image.
Dim llngStart ' Start Position
Dim llngEnd ' End Position
Dim llngLength ' Length
' Fid the first occurance of a line starting with Content-Type:
llngStart = InStrB(1, pbinChunk, CRLF & CStrB("Content-Type:"), vbTextCompare)
' If not found, return nothing
If llngStart = 0 Then Exit Function
' Find the end of the line
llngEnd = InStrB(llngStart + 15, pbinChunk, CR)
' If not found, return nothing
If llngEnd = 0 Then Exit Function
' Adjust start position to start after the text "Content-Type:"
llngStart = llngStart + 15
' If the start position is the same or past the end, return nothing
If llngStart >= llngEnd Then Exit Function
' Determine length
llngLength = llngEnd - llngStart
' Pull out content type
' Convert to unicode
' Trim out whitespace
' Return results
ParseContentType = Trim(CStrU(MidB(pbinChunk, llngStart, llngLength)))
End Function
' ------------------------------------------------------------------------------
Private Function ParseDisposition(ByRef pbinChunk)
' Parses the content-disposition from a chunk of data
'
' Example:
'
' Content-Disposition: form-data: name="File1"; filename="C:\Photo.gif"
'
' Would Return:
' form-data: name="File1"; filename="C:\Photo.gif"
Dim llngStart ' Start Position
Dim llngEnd ' End Position
Dim llngLength ' Length
' Find first occurance of a line starting with Content-Disposition:
llngStart = InStrB(1, pbinChunk, CRLF & CStrB("Content-Disposition:"), vbTextCompare)
' If not found, return nothing
If llngStart = 0 Then Exit Function
' Find the end of the line
llngEnd = InStrB(llngStart + 22, pbinChunk, CRLF)
' If not found, return nothing
If llngEnd = 0 Then Exit Function
' Adjust start position to start after the text "Content-Disposition:"
llngStart = llngStart + 22
' If the start position is the same or past the end, return nothing
If llngStart >= llngEnd Then Exit Function
' Determine Length
llngLength = llngEnd - llngStart
' Pull out content disposition
' Convert to Unicode
' Return Results
ParseDisposition = CStrU(MidB(pbinChunk, llngStart, llngLength))
End Function
' ------------------------------------------------------------------------------
Private Function ParseName(ByRef pstrDisposition)
' Parses the name of the field from the content disposition
'
' Example
'
' form-data: name="File1"; filename="C:\Photo.gif"
'
' Would Return:
' File1
Dim llngStart ' Start Position
Dim llngEnd ' End Position
Dim llngLength ' Length
' Find first occurance of text name="
llngStart = InStr(1, pstrDisposition, "name=""", vbTextCompare)
' If not found, return nothing
If llngStart = 0 Then Exit Function
' Find the closing quote
llngEnd = InStr(llngStart + 6, pstrDisposition, """")
' If not found, return nothing
If llngEnd = 0 Then Exit Function
' Adjust start position to start after the text name="
llngStart = llngStart + 6
' If the start position is the same or past the end, return nothing
If llngStart >= llngEnd Then Exit Function
' Determine Length
llngLength = llngEnd - llngStart
' Pull out field name
' Return results
ParseName = Mid(pstrDisposition, llngStart, llngLength)
End Function
' ------------------------------------------------------------------------------
Private Function ParseFileName(ByRef pstrDisposition)
' Parses the name of the field from the content disposition
'
' Example
'
' form-data: name="File1"; filename="C:\Photo.gif"
'
' Would Return:
' C:\Photo.gif
Dim llngStart ' Start Position
Dim llngEnd ' End Position
Dim llngLength ' Length
' Find first occurance of text filename="
llngStart = InStr(1, pstrDisposition, "filename=""", vbTextCompare)
' If not found, return nothing
If llngStart = 0 Then Exit Function
' Find the closing quote
llngEnd = InStr(llngStart + 10, pstrDisposition, """")
' If not found, return nothing
If llngEnd = 0 Then Exit Function
' Adjust start position to start after the text filename="
llngStart = llngStart + 10
' If the start position is the same of past the end, return nothing
If llngStart >= llngEnd Then Exit Function
' Determine length
llngLength = llngEnd - llngStart
' Pull out file name
' Return results
ParseFileName = Mid(pstrDisposition, llngStart, llngLength)
End Function
' ------------------------------------------------------------------------------
Public Property Get Count()
' Return number of fields found
Count = mlngCount
End Property
' ------------------------------------------------------------------------------
Public Default Property Get Fields(ByVal pstrName)
Dim llngIndex ' Index of current field
' If a number was passed
If IsNumeric(pstrName) Then
llngIndex = CLng(pstrName)
' If programmer requested an invalid number
If llngIndex > mlngCount - 1 Or llngIndex < 0 Then
' Raise an error
Call Err.Raise(vbObjectError + 1, "clsUpload.asp", "Object does not exist within the ordinal reference.")
Exit Property
End If
' Return the field class for the index specified
Set Fields = mobjFieldAry(pstrName)
' Else a field name was passed
Else
' convert name to lowercase
pstrName = LCase(pstrname)
' Loop through each field
For llngIndex = 0 To mlngCount - 1
' If name matches current fields name in lowercase
If LCase(mobjFieldAry(llngIndex).Name) = pstrName Then
' Return Field Class
Set Fields = mobjFieldAry(llngIndex)
Exit Property
End If
Next
End If
' If matches were not found, return an empty field
Set Fields = New clsField
' ' ERROR ON NonExistant:
' ' If matches were not found, raise an error of a non-existent field
' Call Err.Raise(vbObjectError + 1, "clsUpload.asp", "Object does not exist within the ordinal reference.")
' Exit Property
End Property
' ------------------------------------------------------------------------------
Private Sub Class_Terminate()
' This event is called when you destroy the class.
'
' Example:
' Set objUpload = Nothing
'
' Example:
' Response.End
'
' Example:
' Page finnishes executing ...
Dim llngIndex ' Current Field Index
' Loop through fields
For llngIndex = 0 To mlngCount - 1
' Release field object
Set mobjFieldAry(llngIndex) = Nothing
Next
' Redimension array and remove all data within
ReDim mobjFieldAry(-1)
End Sub
' ------------------------------------------------------------------------------
Private Sub Class_Initialize()
' This event is called when you instantiate the class.
'
' Example:
' Set objUpload = New clsUpload
' Redimension array with nothing
ReDim mobjFieldAry(-1)
' Compile ANSI equivilants of carriage returns and line feeds
CR = ChrB(Asc(vbCr)) ' vbCr Carriage Return
LF = ChrB(Asc(vbLf)) ' vbLf Line Feed
CRLF = CR & LF ' vbCrLf Carriage Return & Line Feed
' Set field count to zero
mlngCount = 0
' Request data
Call RequestData
' Parse out the delimiter
Call ParseDelimiter()
' Parse the data
Call ParseData
End Sub
' ------------------------------------------------------------------------------
Private Function CStrU(ByRef pstrANSI)
' Converts an ANSI string to Unicode
' Best used for small strings
Dim llngLength ' Length of ANSI string
Dim llngIndex ' Current position
' determine length
llngLength = LenB(pstrANSI)
' Loop through each character
For llngIndex = 1 To llngLength
' Pull out ANSI character
' Get Ascii value of ANSI character
' Get Unicode Character from Ascii
' Append character to results
CStrU = CStrU & Chr(AscB(MidB(pstrANSI, llngIndex, 1)))
Next
End Function
' ------------------------------------------------------------------------------
Private Function CStrB(ByRef pstrUnicode)
' Converts a Unicode string to ANSI
' Best used for small strings
Dim llngLength ' Length of ANSI string
Dim llngIndex ' Current position
' determine length
llngLength = Len(pstrUnicode)
' Loop through each character
For llngIndex = 1 To llngLength
' Pull out Unicode character
' Get Ascii value of Unicode character
' Get ANSI Character from Ascii
' Append character to results
CStrB = CStrB & ChrB(Asc(Mid(pstrUnicode, llngIndex, 1)))
Next
End Function
' ------------------------------------------------------------------------------
End Class
' ------------------------------------------------------------------------------
%>
2）clsField.aspの内容
<%
' ------------------------------------------------------------------------------
' Author: Lewis Moten
' Date: March 19, 2002
' ------------------------------------------------------------------------------
' Field class represents interface to data passed within one field
'
' ------------------------------------------------------------------------------
Class clsField
Public Name ' Name of the field defined in form
Private mstrPath ' Full path to file on visitors computer
' C:\Documents and Settings\lmoten\Desktop\Photo.gif
Public FileDir ' Directory that file existed in on visitors computer
' C:\Documents and Settings\lmoten\Desktop
Public FileExt ' Extension of the file
' GIF
Public FileName ' Name of the file
' Photo.gif
Public ContentType ' Content / Mime type of file
' image/gif
Public Value ' Unicode value of field (used for normail form fields - not files)
Public BinaryData ' Binary data passed with field (for files)
Public Length ' byte size of value or binary data
Private mstrText ' Text buffer
' If text format of binary data is requested more then
' once, this value will be read to prevent extra processing
' ------------------------------------------------------------------------------
Public Property Get BLOB()
BLOB = BinaryData
End Property
' ------------------------------------------------------------------------------
Public Function BinaryAsText()
' Binary As Text returns the unicode equivilant of the binary data.
' this is useful if you expect a visitor to upload a text file that
' you will need to work with.
' NOTICE:
' NULL values will prematurely terminate your Unicode string.
' NULLs are usually found within binary files more often then plain-text files.
' a simple way around this may consist of replacing null values with another character
' such as a space " "
Dim lbinBytes
Dim lobjRs
' Don't convert binary data that does not exist
If Length = 0 Then Exit Function
If LenB(BinaryData) = 0 Then Exit Function
' If we previously converted binary to text, return the buffered content
If Not Len(mstrText) = 0 Then
BinaryAsText = mstrText
Exit Function
End If
' Convert Integer Subtype Array to Byte Subtype Array
lbinBytes = ASCII2Bytes(BinaryData)
' Convert Byte Subtype Array to Unicode String
mstrText = Bytes2Unicode(lbinBytes)
' Return Unicode Text
BinaryAsText = mstrText
End Function
' ------------------------------------------------------------------------------
Public Sub SaveAs(ByRef pstrFileName)
Dim lobjStream
Dim lobjRs
Dim lbinBytes
' Don't save files that do not posess binary data
If Length = 0 Then Exit Sub
If LenB(BinaryData) = 0 Then Exit Sub
' Create magical objects from never never land
Set lobjStream = Server.CreateObject("ADODB.Stream")
' Let stream know we are working with binary data
lobjStream.Type = adTypeBinary
' Open stream
Call lobjStream.Open()
' Convert Integer Subtype Array to Byte Subtype Array
lbinBytes = ASCII2Bytes(BinaryData)
' Write binary data to stream
Call lobjStream.Write(lbinBytes)
' Save the binary data to file system
' Overwrites file if previously exists!
Call lobjStream.SaveToFile(pstrFileName, adSaveCreateOverWrite)
' Close the stream object
Call lobjStream.Close()
' Release objects
Set lobjStream = Nothing
End Sub
' ------------------------------------------------------------------------------
Public Property Let FilePath(ByRef pstrPath)
mstrPath = pstrPath
' Parse File Ext
If Not InStrRev(pstrPath, ".") = 0 Then
FileExt = Mid(pstrPath, InStrRev(pstrPath, ".") + 1)
FileExt = UCase(FileExt)
End If
' Parse File Name
If Not InStrRev(pstrPath, "\") = 0 Then
FileName = Mid(pstrPath, InStrRev(pstrPath, "\") + 1)
End If
' Parse File Dir
If Not InStrRev(pstrPath, "\") = 0 Then
FileDir = Mid(pstrPath, 1, InStrRev(pstrPath, "\") - 1)
End If
End Property
' ------------------------------------------------------------------------------
Public Property Get FilePath()
FilePath = mstrPath
End Property
' ------------------------------------------------------------------------------
Private Function ASCII2Bytes(ByRef pbinBinaryData)
Dim lobjRs
Dim llngLength
Dim lbinBuffer
' get number of bytes
llngLength = LenB(pbinBinaryData)
Set lobjRs = Server.CreateObject("ADODB.Recordset")
' create field in an empty recordset to hold binary data
Call lobjRs.Fields.Append("BinaryData", adLongVarBinary, llngLength)
' Open recordset
Call lobjRs.Open()
' Add a new record to recordset
Call lobjRs.AddNew()
' Populate field with binary data
Call lobjRs.Fields("BinaryData").AppendChunk(pbinBinaryData & ChrB(0))
' Update / Convert Binary Data
' Although the data we have is binary - it has still been
' formatted as 4 bytes to represent each byte. When we
' update the recordset, the Integer Subtype Array that we
' passed into the Recordset will be converted into a
' Byte Subtype Array
Call lobjRs.Update()
' Request binary data and save to stream
lbinBuffer = lobjRs.Fields("BinaryData").GetChunk(llngLength)
' Close recordset
Call lobjRs.Close()
' Release recordset from memory
Set lobjRs = Nothing
' Return Bytes
ASCII2Bytes = lbinBuffer
End Function
' ------------------------------------------------------------------------------
Private Function Bytes2Unicode(ByRef pbinBytes)
Dim lobjRs
Dim llngLength
Dim lstrBuffer
llngLength = LenB(pbinBytes)
Set lobjRs = Server.CreateObject("ADODB.Recordset")
' Create field in an empty recordset to hold binary data
Call lobjRs.Fields.Append("BinaryData", adLongVarChar, llngLength)
' Open Recordset
Call lobjRs.Open()
' Add a new record to recordset
Call lobjRs.AddNew()
' Populate field with binary data
Call lobjRs.Fields("BinaryData").AppendChunk(pbinBytes)
' Update / Convert.
' Ensure bytes are proper subtype
Call lobjRs.Update()
' Request unicode value of binary data
lstrBuffer = lobjRs.Fields("BinaryData").Value
' Close recordset
Call lobjRs.Close()
' Release recordset from memory
Set lobjRs = Nothing
' Return Unicode
Bytes2Unicode = lstrBuffer
End Function
' ------------------------------------------------------------------------------
End Class
' ------------------------------------------------------------------------------
%>
プロパティFileNameは設定されていません。この不足している行をclsUpload.asp（行157と158の間）のPrivate Sub AddField（...）に追加します。
lobjField.Name = pstrName
lobjField.FilePath = pstrFileName
lobjField.FileName = Mid(pstrFileName, InStrRev(pstrFileName, "\") + 1) ' <= line added to set the file name
lobjField.ContentType = pstrContentType
以下の定数も宣言する必要があります。Const adSaveCreateOverWrite = 2