Javascript 如何在服务器端经典ASP页面中引用上载的文件?
我正在尝试通过Ajax将文件上传到用经典ASP编写的服务器端脚本 这是相关的HTML和JavaScript代码:Javascript 如何在服务器端经典ASP页面中引用上载的文件?,javascript,ajax,asp-classic,Javascript,Ajax,Asp Classic,我正在尝试通过Ajax将文件上传到用经典ASP编写的服务器端脚本 这是相关的HTML和JavaScript代码: <input type="file" id="fileInput" /> 我的问题是:如何在我的经典ASP页面(post.ASP)中获取上传文件的引用 在PHP中,有一个全局变量$u FILES可用,它将包含以下内容: Array ( [image] => Array ( [name] => cat.png [type] =>
<input type="file" id="fileInput" />
我的问题是:如何在我的经典ASP页面(post.ASP)中获取上传文件的引用
在PHP中,有一个全局变量$u FILES可用,它将包含以下内容:
Array
(
[image] => Array
(
[name] => cat.png
[type] => image/png
[tmp_name] => /tmp/phpOjXMW3
[error] => 0
[size] => 10603
)
)
经典ASP中是否有类似的功能?
这是帖子页面:
Set upl = New FileUploader
upl.Upload()
If upl.Files.Count = 1 Then
For Each File In upl.Files.Items
If File.FileSize < 100000 Then
File.FileName = upl.Form ("id") & ".jpg"
File.SaveToDisk Server.MapPath("/Images")
next
end if
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
'response.Flush
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
oUploadFile.FormElement = MidB(biData, nPos, 5)
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
'String to byte string conversion
Private Function CByteString(sString)
Dim nIndex
For nIndex = 1 to Len(sString)
CByteString = CByteString & ChrB(AscB(Mid(sString,nIndex,1)))
Next
End Function
'Byte string to string conversion
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 FormElement
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
Set upl=New FileUploader
upl.Upload()
如果upl.Files.Count=1,则
对于upl.Files.Items中的每个文件
如果File.FileSize<100000,则
File.FileName=upl.Form(“id”)和“.jpg”
File.SaveToDisk Server.MapPath(“/Images”)
下一个
如果结束
这是帖子页面顶部的一个包含:
Set upl = New FileUploader
upl.Upload()
If upl.Files.Count = 1 Then
For Each File In upl.Files.Items
If File.FileSize < 100000 Then
File.FileName = upl.Form ("id") & ".jpg"
File.SaveToDisk Server.MapPath("/Images")
next
end if
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
'response.Flush
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
oUploadFile.FormElement = MidB(biData, nPos, 5)
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
'String to byte string conversion
Private Function CByteString(sString)
Dim nIndex
For nIndex = 1 to Len(sString)
CByteString = CByteString & ChrB(AscB(Mid(sString,nIndex,1)))
Next
End Function
'Byte string to string conversion
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 FormElement
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
类文件上传程序
公共文件
二等兵
私有子类_Initialize()
Set Files=Server.CreateObject(“Scripting.Dictionary”)
设置mcolFormElem=Server.CreateObject(“Scripting.Dictionary”)
端接头
私有子类_Terminate()
如果是IsObject(文件),则
Files.RemoveAll()文件
设置文件=无
如果结束
如果是IsObject(mcolFormElem),则
mcolFormElem.RemoveAll()
设置mcolFormElem=Nothing
如果结束
端接头
公共财产获取表(sIndex)
Form=“”
如果mcolFormElem.存在(LCase(sIndex)),则Form=mcolFormElem.项(LCase(sIndex))
端属性
公共默认子上载()
Dim biData,sInputName
Dim nPosBegin、nPosEnd、NPO、vDataBounds、nPosEnd
暗nPosFile,nPosBound
”回答
biData=Request.binarydead(Request.TotalBytes)
nPosBegin=1
nPosEnd=InstrB(nPosBegin、biData、cbytesting(Chr(13)))
如果(nPosEnd nPosBegin)0,则文件。添加LCase(sInputName),然后加载文件
其他的
nPos=InstrB(nPos,biData,cbytesting(Chr(13)))
nPosBegin=nPos+4
nPosEnd=InstrB(nPosBegin、biData、vDataBounds)-2
如果mcolFormElem.不存在(LCase(sInputName)),则mcolFormElem.添加LCase(sInputName)、CWideString(MidB(biData、nPosBegin、nPosBegin))
如果结束
NadabillizePos=InstrB(NadabillizePos+LenB(vDataBounds)、biData、vDataBounds)
环
端接头
'字符串到字节字符串的转换
专用函数CByteString(sString)
暗九度
对于nIndex=1到Len(sString)
CByteString=CByteString&ChrB(AscB(Mid(sString,nIndex,1)))
下一个
端函数
'字节字符串到字符串的转换
专用函数CWideString(bsString)
暗九度
CWideString=“”
对于nIndex=1到LenB(bsString)
CWideString=CWideString&Chr(AscB(MidB(bsString,nIndex,1)))
下一个
端函数
末级
类上载文件
公共内容类型
公共文件名
公共文件数据
公共表单元素
公共属性获取文件大小()
FileSize=LenB(FileData)
端属性
公共子存储磁盘(sPath)
昏暗的
暗九度
如果sPath=“”或FileName=“”,则退出Sub
如果Mid(sPath,Len(sPath))“\”则sPath=sPath&“\”
Set of s=Server.CreateObject(“Scripting.FileSystemObject”)
如果不存在oFS.FolderExists(sPath),则退出Sub
Set of ile=oFS.CreateTextFile(sPath&FileName,True)
对于nIndex=1到LenB(FileData)
写Chr(AscB(MidB(FileData,nIndex,1)))
下一个
奥菲尔,关门
端接头
公共子存储数据库(ByRef of字段)
如果LenB(FileData)=0,则退出子系统
如果是IsObject(油田),则
oField.AppendChunk文件数据
如果结束
端接头
末级
上传文件后,您可以使用FileSystemObject
检查文件是否存在,并通过GetFile
方法检索其属性。使用函数可节省空间并返回属性字典,使其更易于引用:
函数getFileInfo(ByVal fileLocation)
'使用MapPath转换为绝对路径
fileLocation=Server.MapPath(fileLocation)
'使用保留字设置文件系统和字典对象
设置fileSystem=Server.CreateObject(“Scripting.FileSystemObject”)
Set dictionary=Server.CreateObject(“Scripting.dictionary”)
'检查文件是否存在
如果fileSystem.file存在(fileLocation),则
'使用GetFile检索文件属性
set file=fileSystem.GetFile(文件位置)
'将每个属性添加到dictionary对象
dictionary.add“filefind”,true
dictionary.add“Attributes”,file.Attributes
dictionary.add“DateCreated”,file.DateCreated
dictionary.add“DateLastAccessed”,file.DateLastAccessed
dictionary.add“DateLastModified”,file.DateLastModified
dictionary.add“Drive”,file.Drive
dictionary.add“Name”,file.Name
dictionary.add“ParentFolder”,file.ParentFolder
dictionary.add“Path”,file.Path
dictionary.add“ShortName”,file.ShortName
dictionary.add“ShortPath”,file.ShortPath
dictionary.add“Size”,file.Size
dictionary.add“Type”,file.Type
“属性翻译:
“0=普通文件
'1=只读文件
'2=隐藏文件
'4=系统文件
'16=文件夹或目录
'32=自上次备份以来,文件已更改
'1024=链接或快捷方式
'2048=压缩文件
其他的
'找不到文件
dictionary.add“filefind”,false
如果结束
'返回字典对象
设置getFileInfo=dictionary
'将所有对象设置为空
设置文件系统=无
设置字典=无
set file=nothing
端函数
检查文件是否已上载,以及