关于无组上传的老话题

<script RUNAT=SERVER LANGUAGE=VBscript>
dim Data_5xsoft

Class upload_5xsoft

dim objForm,objFile,Version

Public function Form(strForm)
strForm=lcase(strForm)
if not objForm.exists(strForm) then
Form=""
else
Form=objForm(strForm)
end if
end function

Public function File(strFile)
strFile=lcase(strFile)
if not objFile.exists(strFile) then
set File=new FileInfo
else
set File=objFile(strFile)
end if
end function


Private Sub Class_Initialize
dim RequestData,sStart,vbCrlf,sInfo,iInfoStart,iInfoEnd,tStream,iStart,theFile
dim iFileSize,sFilePath,sFileType,sFormValue,sFileName
dim iFindStart,iFindEnd
dim iFormStart,iFormEnd,sFormName
dim dataend,Image,head_height_l,head_height_h
Version="化境HTTP上传程序 Version 2.0"
set objForm=Server.CreateObject("scripting.Dictionary")
set objFile=Server.CreateObject("scripting.Dictionary")
if Request.TotalBytes<1 then Exit Sub
set tStream = Server.CreateObject("adodb.stream")
set Data_5xsoft = Server.CreateObject("adodb.stream")
Data_5xsoft.Type = 1
Data_5xsoft.Mode =3
Data_5xsoft.Open
Data_5xsoft.Write Request.BinaryRead(Request.TotalBytes)
Data_5xsoft.Position=0
RequestData =Data_5xsoft.Read

iFormStart = 1
iFormEnd = LenB(RequestData)
vbCrlf = chrB(13) & chrB(10)
sStart = MidB(RequestData,1, InStrB(iFormStart,RequestData,vbCrlf)-1)
iStart = LenB (sStart)
iFormStart=iFormStart+iStart+1
while (iFormStart + 10) < iFormEnd
iInfoEnd = InStrB(iFormStart,RequestData,vbCrlf & vbCrlf)+3
tStream.Type = 1
tStream.Mode =3
tStream.Open
Data_5xsoft.Position = iFormStart
Data_5xsoft.CopyTo tStream,iInfoEnd-iFormStart
tStream.Position = 0
tStream.Type = 2
tStream.Charset ="gb2312"
sInfo = tStream.ReadText
tStream.Close
''取得表单项目名称
iFormStart = InStrB(iInfoEnd,RequestData,sStart)
iFindStart = InStr(22,sInfo,"name=""",1)+6
iFindEnd = InStr(iFindStart,sInfo,"""",1)
sFormName = lcase(Mid (sinfo,iFindStart,iFindEnd-iFindStart))
''如果是文件
if InStr (45,sInfo,"filename=""",1) > 0 then
set theFile=new FileInfo
''取得图片长宽
dataend = iformstart-iInfoEnd-1
Image=midb(sInfo,iInforEnd+1,dataend)
head_height_l = Ascb( midb( Image,165,1 ) )
head_height_h = Ascb( midb( Image,164,1 ) )

head_width_l = Ascb( midb( Image,167,1 ) )
head_width_h = Ascb( midb( Image,166,1 ) )

head_width_h = head_width_h * 256

head_height_h = head_height_h * 256
jpgwidth= head_width_h + head_width_l
jpgheight=head_height_h + head_height_l
''取得文件名
iFindStart = InStr(iFindEnd,sInfo,"filename=""",1)+10
iFindEnd = InStr(iFindStart,sInfo,"""",1)
sFileName = Mid (sinfo,iFindStart,iFindEnd-iFindStart)
theFile.FileName=getFileName(sFileName)
theFile.FilePath=getFilePath(sFileName)
''取得文件类型
iFindStart = InStr(iFindEnd,sInfo,"Content-Type: ",1)+14
iFindEnd = InStr(iFindStart,sInfo,vbCr)
theFile.FileType =Mid (sinfo,iFindStart,iFindEnd-iFindStart)
theFile.FileStart =iInfoEnd
theFile.FileSize = iFormStart -iInfoEnd -3
theFile.FormName=sFormName
if not objFile.Exists(sFormName) then
objFile.add sFormName,theFile
end if
else
''如果是表单项目
tStream.Type =1
tStream.Mode =3
tStream.Open
Data_5xsoft.Position = iInfoEnd
Data_5xsoft.CopyTo tStream,iFormStart-iInfoEnd-3
tStream.Position = 0
tStream.Type = 2
tStream.Charset ="gb2312"
sFormValue = tStream.ReadText
tStream.Close
if objForm.Exists(sFormName) then
objForm(sFormName)=objForm(sFormName)&", "&sFormValue
else
objForm.Add sFormName,sFormValue
end if
end if
iFormStart=iFormStart+iStart+1
wend
RequestData=""
set tStream =nothing
End Sub

Private Sub Class_Terminate
if Request.TotalBytes>0 then
objForm.RemoveAll
objFile.RemoveAll
set objForm=nothing
set objFile=nothing
Data_5xsoft.Close
set Data_5xsoft =nothing
end if
End Sub


Private function GetFilePath(FullPath)
If FullPath <> "" Then
GetFilePath = left(FullPath,InStrRev(FullPath, "\"))
Else
GetFilePath = ""
End If
End function

Private function GetFileName(FullPath)
If FullPath <> "" Then
GetFileName = mid(FullPath,InStrRev(FullPath, "\")+1)
Else
GetFileName = ""
End If
End function
End Class

Class FileInfo
dim FormName,FileName,FilePath,FileSize,FileType,FileStart
Private Sub Class_Initialize
FileName = ""
FilePath = ""
FileSize = 0
FileStart= 0
FormName = ""
FileType = ""
End Sub

Public function SaveAs(FullPath)
dim dr,ErrorChar,i
SaveAs=true
if trim(fullpath)="" or FileStart=0 or FileName="" or right(fullpath,1)="/" then exit function
set dr=CreateObject("Adodb.Stream")
dr.Mode=3
dr.Type=1
dr.Open
Data_5xsoft.position=FileStart
Data_5xsoft.copyto dr,FileSize
dr.SaveToFile FullPath,2
dr.Close
set dr=nothing
SaveAs=false
end function
End Class
</script>
stream流的问题：sStart = MidB(RequestData,1, InStrB(iFormStart,RequestData,vbCrlf)-1)为段落之间的分割符号
iInfoEnd = InStrB(iFormStart,RequestData,vbCrlf & vbCrlf)+3 此点前为value，后面是文件的info
iInfoEnd到sStart之间是一个文件的info
用iformstart控制各个开始点
stream type
type=1 means adTypeBinary
mode 3 是可读写
method
open打开个空流
write 向流写入二进制数据
method
request.binaryread 读取原始未解析的内容
request.totalbytes 返回所有字节数
position 当前指针的位置
read 从当前位置顺序读取
lenB 返回字符有多少
ChrB 不是返回一个或两个字节的字符，而总是返回单个字节的字符。
InStrB 返回的不是一个字符串在另一个字符串中第一次出现的字符位置，而是字节位置。
MidB 函数与包含在字符串中的字节数据一起使用。其参数不是指定字符数，而是字节数。