我正在向旧版应用程序添加新功能。基本上，用户是请求允许其执行某项功能的权限，此更改将提示他们上传屏幕截图以证明这一点，然后向包含此屏幕截图的相关方发送电子邮件。
我能够在线找到一些执行我需要的上传功能的代码（包括在下面-归功于David Crowell），但是我找不到将文件名传递回父页面的方法。我尝试了parent.returnvalue / window.returnvalue的几种变体而没有运气。我以前从未使用过vb或没有文件上传功能，所以我一直在Google周围搜寻，但是我无法弄清为什么它不起作用，我确实读过一些关于无法将服务器端变量传递回的信息客户端-这是它不起作用的原因吗？
父页面（POHierarchy.asp）
' Any value greater than zero must have an uploaded file to show authorisation
if strApprovalValue <> "0" then
strTarget = "popup.asp?page=Uploader.asp"
'below should pass back uploaded filename but does not
strReturnValue = window.ShowModalDialog(strTarget, , "dialogwidth:650px; dialogheight:300px; status:no; help:no")
'************************
' test value for attachment
'*************************
'strReturnValue = "test.png"
'*************************
'test value end
'*************************
FormSubmit.hstrFileName.value = strReturnValue 'uploaded filename
Call sDisplayFormData
end if
子页面（Uploader.asp）
<!-- #include file="ShadowUpload.asp" -->
<HTML>
<HEAD>
<!--<META name="VI60_DefaultClientScript" content="VBScript">-->
<META http-equiv="Pragma" content="no-cache">
<META name="GENERATOR" content="Microsoft Visual Studio 6.0">
<LINK rel="stylesheet" type="text/css" href="_Themes/Standard/popup.css">
</HEAD>
<BODY style="cursor:wait">
<%
Dim objUpload
Dim Folder
Dim intWebAccess, intPDFAccess, blnViewOnly, blnAccessAllowed
Dim strList, intBusinessIdx, strBusiness, strModuleAuthoriserName, intAuthoriserIdx, intThisUserIdx
Dim strModuleAuthoriserEmail, strDisplay, strBusinessFull, intCurrentOrg
Dim LocalSystem, strAuthoriserList, strFullHeading, strInstructions, strInstructions1, intCount
Dim rs, cmd
Dim strfileName
Folder = "C:\inetpub\wwwroot\FSSRequests\Attachments"
strFullHeading = "Please Upload the DOFA Screenshot"
If Request("action")="1" Then
Set objUpload=New ShadowUpload
If objUpload.GetError<>"" Then
Response.Write("sorry, could not upload: "&objUpload.GetError)
Else
Response.Write("found "&objUpload.FileCount&" files...<br />")
For x=0 To objUpload.FileCount-1
Response.Write("file name: "&objUpload.File(x).FileName&"<br />")
Response.Write("file type: "&objUpload.File(x).ContentType&"<br />")
Response.Write("file size: "&objUpload.File(x).Size&"<br />")
Response.Write("image width: "&objUpload.File(x).ImageWidth&"<br />")
Response.Write("image height: "&objUpload.File(x).ImageHeight&"<br />")
strfileName = objUpload.File(x).FileName 'set filename to be passed back to parent window - working
If (objUpload.File(x).ImageWidth>200) Or (objUpload.File(x).ImageHeight>200) Then
Response.Write("Image too big, not saving!")
Else
Call objUpload.File(x).SaveToDisk(Folder, "")
Response.Write("file saved successfully!")
End If
Response.Write("<hr />")
Next
Response.Write("thank you, "&objUpload("name")) 'gives details of uploaded file for testing
Response.Write("File name is "&strfileName) 'shows that strfileName is being set correctly
End If
Response.Write ("<script>window.returnvalue = strfileName;</script>") 'will upload but name is not passed
Response.Write("<script>self.close();</script>")
Response.End
End If
%>
<table border=0 width="100%">
<TR width="300px" nowrap><H1><%=strFullHeading%></H1></TR>
<tr>Please screen shot your Results from DOFA with a name relevent to your request <br /> The Link is available by <a href="http://intranet.g02.fujitsu.local/dofa/Reporting">clicking here </a></tr>
<tr>Upload New Attachment</tr>
<tr><form action="<%=Request.ServerVariables( "Script_Name" )%>?action=1" enctype="multipart/form-data" method="POST">
File1: <input type="file" name="file1" /><br />
<button type="submit">Upload</button>
</form></tr>
</table>
<script language="vbscript">
Option Explicit
'********************************************************
' sPageInitialise
'********************************************************
Sub sPageInitialise
strPageTitle = "Uploader.asp"
blnAccessAllowed = IsWebAccessAllowed("VIEW", intWebAccess, intPDFAccess)
strWindow = "popup" ' ‘main’ or ‘popup’ or ‘toolbar’
End Sub
</script>
子页面引用ShadowUpload.asp
<%
'constants:
Const MAX_UPLOAD_SIZE=6000000 'bytes
Const MSG_NO_DATA="nothing to upload!"
Const MSG_EXCEEDED_MAX_SIZE="you exceeded the maximum upload size!"
Const SU_DEBUG_MODE=False
Class ShadowUpload
Private m_Request
Private m_Files
Private m_Error
Public Property Get GetError
GetError = m_Error
End Property
Public Property Get FileCount
FileCount = m_Files.Count
End Property
Public Function File(index)
Dim keys
keys = m_Files.Keys
Set File = m_Files(keys(index))
End Function
Public Default Property Get Item(strName)
If m_Request.Exists(strName) Then
Item = m_Request(strName)
Else
Item = ""
End If
End Property
Private Sub Class_Initialize
Dim iBytesCount, strBinData
'first of all, get amount of uploaded bytes:
iBytesCount = Request.TotalBytes
WriteDebug("initializing upload, bytes: " & iBytesCount & "<br />")
'abort if nothing there:
If iBytesCount=0 Then
m_Error = MSG_NO_DATA
Exit Sub
End If
'abort if exceeded maximum upload size:
If iBytesCount>MAX_UPLOAD_SIZE Then
m_Error = MSG_EXCEEDED_MAX_SIZE
Exit Sub
End If
'read the binary data:
strBinData = Request.BinaryRead(iBytesCount)
'create private collections:
Set m_Request = Server.CreateObject("Scripting.Dictionary")
Set m_Files = Server.CreateObject("Scripting.Dictionary")
'populate the collection:
Call BuildUpload(strBinData)
End Sub
Private Sub Class_Terminate
Dim fileName
If IsObject(m_Request) Then
m_Request.RemoveAll
Set m_Request = Nothing
End If
If IsObject(m_Files) Then
For Each fileName In m_Files.Keys
Set m_Files(fileName)=Nothing
Next
m_Files.RemoveAll
Set m_Files = Nothing
End If
End Sub
Private Sub BuildUpload(ByVal strBinData)
Dim strBinQuote, strBinCRLF, iValuePos
Dim iPosBegin, iPosEnd, strBoundaryData
Dim strBoundaryEnd, iCurPosition, iBoundaryEndPos
Dim strElementName, strFileName, objFileData
Dim strFileType, strFileData, strElementValue
strBinQuote = AsciiToBinary(chr(34))
strBinCRLF = AsciiToBinary(chr(13))
'find the boundaries
iPosBegin = 1
iPosEnd = InstrB(iPosBegin, strBinData, strBinCRLF)
strBoundaryData = MidB(strBinData, iPosBegin, iPosEnd-iPosBegin)
iCurPosition = InstrB(1, strBinData, strBoundaryData)
strBoundaryEnd = strBoundaryData & AsciiToBinary("--")
iBoundaryEndPos = InstrB(strBinData, strBoundaryEnd)
'read binary data into private collection:
Do until (iCurPosition>=iBoundaryEndPos) Or (iCurPosition=0)
'skip non relevant data...
iPosBegin = InstrB(iCurPosition, strBinData, AsciiToBinary("Content-Disposition"))
iPosBegin = InstrB(iPosBegin, strBinData, AsciiToBinary("name="))
iValuePos = iPosBegin
'read the name of the form element, e.g. "file1", "text1"
iPosBegin = iPosBegin+6
iPosEnd = InstrB(iPosBegin, strBinData, strBinQuote)
strElementName = BinaryToAscii(MidB(strBinData, iPosBegin, iPosEnd-iPosBegin))
'maybe file?
iPosBegin = InstrB(iCurPosition, strBinData, AsciiToBinary("filename="))
iPosEnd = InstrB(iPosEnd, strBinData, strBoundaryData)
If (iPosBegin>0) And (iPosBegin<iPosEnd) Then
'skip non relevant data..
iPosBegin = iPosBegin+10
'read file name:
iPosEnd = InstrB(iPosBegin, strBinData, strBinQuote)
strFileName = BinaryToAscii(MidB(strBinData, iPosBegin, iPosEnd-iPosBegin))
'verify that we got name:
If Len(strFileName)>0 Then
'create file data:
Set objFileData = New FileData
objFileData.FileName = strFileName
'read file type:
iPosBegin = InstrB(iPosEnd, strBinData, AsciiToBinary("Content-Type:"))
iPosBegin = iPosBegin+14
iPosEnd = InstrB(iPosBegin, strBinData, strBinCRLF)
strFileType = BinaryToAscii(MidB(strBinData, iPosBegin, iPosEnd-iPosBegin))
objFileData.ContentType = strFileType
'read file contents:
iPosBegin = iPosEnd+4
iPosEnd = InstrB(iPosBegin, strBinData, strBoundaryData)-2
strFileData = MidB(strBinData, iPosBegin, iPosEnd-iPosBegin)
'check that not empty:
If LenB(strFileData)>0 Then
objFileData.Contents = strFileData
'append to files collection if not empty:
Set m_Files(strFileName) = objFileData
Else
Set objFileData = Nothing
End If
End If
strElementValue = strFileName
Else
'ordinary form value, just read:
iPosBegin = InstrB(iValuePos, strBinData, strBinCRLF)
iPosBegin = iPosBegin+4
iPosEnd = InstrB(iPosBegin, strBinData, strBoundaryData)-2
strElementValue = BinaryToAscii(MidB(strBinData, iPosBegin, iPosEnd-iPosBegin))
End If
'append to request collection
m_Request(strElementName) = strElementValue
'skip to next element:
iCurPosition = InstrB(iCurPosition+LenB(strBoundaryData), strBinData, strBoundaryData)
Loop
End Sub
Private Function WriteDebug(msg)
If SU_DEBUG_MODE Then
Response.Write(msg)
Response.Flush
End If
End Function
Private Function AsciiToBinary(strAscii)
Dim i, char, result
result = ""
For i=1 to Len(strAscii)
char = Mid(strAscii, i, 1)
result = result & chrB(AscB(char))
Next
AsciiToBinary = result
End Function
Private Function BinaryToAscii(strBinary)
Dim i, result
result = ""
For i=1 to LenB(strBinary)
result = result & chr(AscB(MidB(strBinary, i, 1)))
Next
BinaryToAscii = result
End Function
End Class
Class FileData
Private m_fileName
Private m_contentType
Private m_BinaryContents
Private m_AsciiContents
Private m_imageWidth
Private m_imageHeight
Private m_checkImage
Public Property Get FileName
FileName = m_fileName
End Property
Public Property Get ContentType
ContentType = m_contentType
End Property
Public Property Get ImageWidth
If m_checkImage=False Then Call CheckImageDimensions
ImageWidth = m_imageWidth
End Property
Public Property Get ImageHeight
If m_checkImage=False Then Call CheckImageDimensions
ImageHeight = m_imageHeight
End Property
Public Property Let FileName(strName)
Dim arrTemp
arrTemp = Split(strName, "\")
m_fileName = arrTemp(UBound(arrTemp))
End Property
Public Property Let CheckImage(blnCheck)
m_checkImage = blnCheck
End Property
Public Property Let ContentType(strType)
m_contentType = strType
End Property
Public Property Let Contents(strData)
m_BinaryContents = strData
m_AsciiContents = RSBinaryToString(m_BinaryContents)
End Property
Public Property Get Size
Size = LenB(m_BinaryContents)
End Property
Private Sub CheckImageDimensions
Dim width, height, colors
Dim strType
'''If gfxSpex(BinaryToAscii(m_BinaryContents), width, height, colors, strType) = true then
If gfxSpex(m_AsciiContents, width, height, colors, strType) = true then
m_imageWidth = width
m_imageHeight = height
End If
m_checkImage = True
End Sub
Private Sub Class_Initialize
m_imageWidth = -1
m_imageHeight = -1
m_checkImage = False
End Sub
Public Sub SaveToDisk(strFolderPath, ByRef strNewFileName)
Dim strPath, objFSO, objFile
Dim i, time1, time2
Dim objStream, strExtension
strPath = strFolderPath&"\"
If Len(strNewFileName)=0 Then
strPath = strPath & m_fileName
Else
strExtension = GetExtension(strNewFileName)
If Len(strExtension)=0 Then
strNewFileName = strNewFileName & "." & GetExtension(m_fileName)
End If
strPath = strPath & strNewFileName
End If
WriteDebug("save file started...<br />")
time1 = CDbl(Timer)
Set objFSO = Server.CreateObject("Scripting.FileSystemObject")
Set objFile = objFSO.CreateTextFile(strPath)
objFile.Write(m_AsciiContents)
'''For i=1 to LenB(m_BinaryContents)
''' objFile.Write chr(AscB(MidB(m_BinaryContents, i, 1)))
'''Next
time2 = CDbl(Timer)
WriteDebug("saving file took " & (time2-time1) & " seconds.<br />")
objFile.Close
Set objFile=Nothing
Set objFSO=Nothing
End Sub
Private Function GetExtension(strPath)
Dim arrTemp
arrTemp = Split(strPath, ".")
GetExtension = ""
If UBound(arrTemp)>0 Then
GetExtension = arrTemp(UBound(arrTemp))
End If
End Function
Private Function RSBinaryToString(xBinary)
'Antonin Foller, http://www.motobit.com
'RSBinaryToString converts binary data (VT_UI1 | VT_ARRAY Or MultiByte string)
'to a string (BSTR) using ADO recordset
Dim Binary
'MultiByte data must be converted To VT_UI1 | VT_ARRAY first.
If vartype(xBinary)=8 Then Binary = MultiByteToBinary(xBinary) Else Binary = xBinary
Dim RS, LBinary
Const adLongVarChar = 201
Set RS = CreateObject("ADODB.Recordset")
LBinary = LenB(Binary)
If LBinary>0 Then
RS.Fields.Append "mBinary", adLongVarChar, LBinary
RS.Open
RS.AddNew
RS("mBinary").AppendChunk Binary
RS.Update
RSBinaryToString = RS("mBinary")
Else
RSBinaryToString = ""
End If
End Function
Function MultiByteToBinary(MultiByte)
'© 2000 Antonin Foller, http://www.motobit.com
' MultiByteToBinary converts multibyte string To real binary data (VT_UI1 | VT_ARRAY)
' Using recordset
Dim RS, LMultiByte, Binary
Const adLongVarBinary = 205
Set RS = CreateObject("ADODB.Recordset")
LMultiByte = LenB(MultiByte)
If LMultiByte>0 Then
RS.Fields.Append "mBinary", adLongVarBinary, LMultiByte
RS.Open
RS.AddNew
RS("mBinary").AppendChunk MultiByte & ChrB(0)
RS.Update
Binary = RS("mBinary").GetChunk(LMultiByte)
End If
MultiByteToBinary = Binary
End Function
Private Function WriteDebug(msg)
If SU_DEBUG_MODE Then
Response.Write(msg)
Response.Flush
End If
End Function
Private Function BinaryToAscii(strBinary)
Dim i, result
result = ""
For i=1 to LenB(strBinary)
result = result & chr(AscB(MidB(strBinary, i, 1)))
Next
BinaryToAscii = result
End Function
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
'::: :::
'::: This routine will attempt to identify any filespec passed :::
'::: as a graphic file (regardless of the extension). This will :::
'::: work with BMP, GIF, JPG and PNG files. :::
'::: :::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
'::: Based on ideas presented by David Crowell :::
'::: (credit where due) :::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
'::: blah blah blah blah blah blah blah blah blah blah blah blah :::
'::: blah blah blah blah blah blah blah blah blah blah blah blah :::
'::: blah blah Copyright *c* MM, Mike Shaffer blah blah :::
'::: bh blah ALL RIGHTS RESERVED WORLDWIDE blah blah :::
'::: blah blah Permission is granted to use this code blah blah :::
'::: blah blah in your projects, as long as this blah blah :::
'::: blah blah copyright notice is included blah blah :::
'::: blah blah blah blah blah blah blah blah blah blah blah blah :::
'::: blah blah blah blah blah blah blah blah blah blah blah blah :::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
'::: :::
'::: This function gets a specified number of bytes from any :::
'::: file, starting at the offset (base 1) :::
'::: :::
'::: Passed: :::
'::: flnm => Filespec of file to read :::
'::: offset => Offset at which to start reading :::
'::: bytes => How many bytes to read :::
'::: :::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
Private Function GetBytes(flnm, offset, bytes)
Dim startPos
If offset=0 Then
startPos = 1
Else
startPos = offset
End If
if bytes = -1 then ' Get All!
GetBytes = flnm
else
GetBytes = Mid(flnm, startPos, bytes)
end if
' Dim objFSO
' Dim objFTemp
' Dim objTextStream
' Dim lngSize
'
' Set objFSO = CreateObject("Scripting.FileSystemObject")
'
' ' First, we get the filesize
' Set objFTemp = objFSO.GetFile(flnm)
' lngSize = objFTemp.Size
' set objFTemp = nothing
'
' fsoForReading = 1
' Set objTextStream = objFSO.OpenTextFile(flnm, fsoForReading)
'
' if offset > 0 then
' strBuff = objTextStream.Read(offset - 1)
' end if
'
' if bytes = -1 then ' Get All!
' GetBytes = objTextStream.Read(lngSize) 'ReadAll
' else
' GetBytes = objTextStream.Read(bytes)
' end if
'
' objTextStream.Close
' set objTextStream = nothing
' set objFSO = nothing
End Function
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
'::: :::
'::: Functions to convert two bytes to a numeric value (long) :::
'::: (both little-endian and big-endian) :::
'::: :::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
Private Function lngConvert(strTemp)
lngConvert = clng(asc(left(strTemp, 1)) + ((asc(right(strTemp, 1)) * 256)))
end function
Private Function lngConvert2(strTemp)
lngConvert2 = clng(asc(right(strTemp, 1)) + ((asc(left(strTemp, 1)) * 256)))
end function
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
'::: :::
'::: This function does most of the real work. It will attempt :::
'::: to read any file, regardless of the extension, and will :::
'::: identify if it is a graphical image. :::
'::: :::
'::: Passed: :::
'::: flnm => Filespec of file to read :::
'::: width => width of image :::
'::: height => height of image :::
'::: depth => color depth (in number of colors) :::
'::: strImageType=> type of image (e.g. GIF, BMP, etc.) :::
'::: :::
':::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
function gfxSpex(flnm, width, height, depth, strImageType)
dim strPNG
dim strGIF
dim strBMP
dim strType
dim strBuff
dim lngSize
dim flgFound
dim strTarget
dim lngPos
dim ExitLoop
dim lngMarkerSize
strType = ""
strImageType = "(unknown)"
gfxSpex = False
strPNG = chr(137) & chr(80) & chr(78)
strGIF = "GIF"
strBMP = chr(66) & chr(77)
strType = GetBytes(flnm, 0, 3)
if strType = strGIF then ' is GIF
strImageType = "GIF"
Width = lngConvert(GetBytes(flnm, 7, 2))
Height = lngConvert(GetBytes(flnm, 9, 2))
Depth = 2 ^ ((asc(GetBytes(flnm, 11, 1)) and 7) + 1)
gfxSpex = True
elseif left(strType, 2) = strBMP then ' is BMP
strImageType = "BMP"
Width = lngConvert(GetBytes(flnm, 19, 2))
Height = lngConvert(GetBytes(flnm, 23, 2))
Depth = 2 ^ (asc(GetBytes(flnm, 29, 1)))
gfxSpex = True
elseif strType = strPNG then ' Is PNG
strImageType = "PNG"
Width = lngConvert2(GetBytes(flnm, 19, 2))
Height = lngConvert2(GetBytes(flnm, 23, 2))
Depth = getBytes(flnm, 25, 2)
select case asc(right(Depth,1))
case 0
Depth = 2 ^ (asc(left(Depth, 1)))
gfxSpex = True
case 2
Depth = 2 ^ (asc(left(Depth, 1)) * 3)
gfxSpex = True
case 3
Depth = 2 ^ (asc(left(Depth, 1))) '8
gfxSpex = True
case 4
Depth = 2 ^ (asc(left(Depth, 1)) * 2)
gfxSpex = True
case 6
Depth = 2 ^ (asc(left(Depth, 1)) * 4)
gfxSpex = True
case else
Depth = -1
end select
else
strBuff = GetBytes(flnm, 0, -1) ' Get all bytes from file
lngSize = len(strBuff)
flgFound = 0
strTarget = chr(255) & chr(216) & chr(255)
flgFound = instr(strBuff, strTarget)
if flgFound = 0 then
exit function
end if
strImageType = "JPG"
lngPos = flgFound + 2
ExitLoop = false
do while ExitLoop = False and lngPos < lngSize
do while asc(mid(strBuff, lngPos, 1)) = 255 and lngPos < lngSize
lngPos = lngPos + 1
loop
if asc(mid(strBuff, lngPos, 1)) < 192 or asc(mid(strBuff, lngPos, 1)) > 195 then
lngMarkerSize = lngConvert2(mid(strBuff, lngPos + 1, 2))
lngPos = lngPos + lngMarkerSize + 1
else
ExitLoop = True
end if
loop
if ExitLoop = False then
Width = -1
Height = -1
Depth = -1
else
Height = lngConvert2(mid(strBuff, lngPos + 4, 2))
Width = lngConvert2(mid(strBuff, lngPos + 6, 2))
Depth = 2 ^ (asc(mid(strBuff, lngPos + 8, 1)) * 8)
gfxSpex = True
end if
end if
End Function
End Class
%>
我希望这会将strfileName变量从Uploader.asp传递到POHierarchy.asp中的strReturnValue，然后应该使用FormSubmit.hstrFileName.value = strReturnValue
我需要存储它，因为它必须在发送电子邮件之前至少经过3页以上。 我包含在POHierarchy.asp中的测试值向我显示，将值存储在表单中没有问题（我在下一页上显示了表单数据的函数），因此我认为它不会被传递。 任何建议表示赞赏，我已经对此进行了几天的调整，但没有取得任何进展。
答案 0 :(得分：1)
通过将文件名存储在会话变量中来解决此问题
Session("filename")=strfileName
然后将其附加到稍后的asp页中的我的文件路径上，以传递到发送电子邮件的存储过程中。
strFileName = Session("filename")
strFilePath = "C:\inetpub\wwwroot\FSSRequests\Attachments\"
strAttachPath = strFilePath & strFileName
答案 1 :(得分：0)
您在这里给自己添麻烦了...
如果我是你，我会研究一个不使用弹出窗口的Ajax文件上传（jQuery非常简单），并返回名称（顺便说一下，如果有多个文件，则返回你的方法，即使成功，也只会返回上载文件的最后处理文件的名称），然后您可以轻松地将其存储在表单的隐藏字段中。