28
2005
05

无组件上传控件

控件代码

<SCRIPT RUNAT=SERVER LANGUAGE=VBSCRIPT> 

dim upfile_5xSoft_Stream


Class upload_5xSoft


dim Form,File,Version


Private Sub Class_Initialize 

dim iStart,iFileNameStart,iFileNameEnd,iEnd,vbEnter,iFormStart,iFormEnd,theFile

dim strDiv,mFormName,mFormValue,mFileName,mFileSize,mFilePath,iDivLen,mStr

Version=""

if Request.TotalBytes<1 then Exit Sub

set Form=CreateObject("Scripting.Dictionary")

set File=CreateObject("Scripting.Dictionary")

set upfile_5xSoft_Stream=CreateObject("Adodb.Stream")

upfile_5xSoft_Stream.mode=3

upfile_5xSoft_Stream.type=1

upfile_5xSoft_Stream.open

upfile_5xSoft_Stream.write Request.BinaryRead(Request.TotalBytes)


vbEnter=Chr(13)&Chr(10)

iDivLen=inString(1,vbEnter)+1

strDiv=subString(1,iDivLen)

iFormStart=iDivLen

iFormEnd=inString(iformStart,strDiv)-1

while iFormStart < iFormEnd

iStart=inString(iFormStart,"name=""")

iEnd=inString(iStart+6,"""")

mFormName=subString(iStart+6,iEnd-iStart-6)

iFileNameStart=inString(iEnd+1,"filename=""")

if iFileNameStart>0 and iFileNameStart<iFormEnd then

iFileNameEnd=inString(iFileNameStart+10,"""")

mFileName=subString(iFileNameStart+10,iFileNameEnd-iFileNameStart-10)

iStart=inString(iFileNameEnd+1,vbEnter&vbEnter)

iEnd=inString(iStart+4,vbEnter&strDiv)

if iEnd>iStart then

mFileSize=iEnd-iStart-4

else

mFileSize=0

end if

set theFile=new FileInfo

theFile.FileName=getFileName(mFileName)

theFile.FilePath=getFilePath(mFileName)

theFile.FileSize=mFileSize

theFile.FileStart=iStart+4

theFile.FormName=FormName

file.add mFormName,theFile

else

iStart=inString(iEnd+1,vbEnter&vbEnter)

iEnd=inString(iStart+4,vbEnter&strDiv)


if iEnd>iStart then

mFormValue=subString(iStart+4,iEnd-iStart-4)

else

mFormValue="" 

end if

form.Add mFormName,mFormValue

end if


iFormStart=iformEnd+iDivLen

iFormEnd=inString(iformStart,strDiv)-1

wend

End Sub


Private Function subString(theStart,theLen)

dim i,c,stemp

upfile_5xSoft_Stream.Position=theStart-1

stemp=""

for i=1 to theLen

if upfile_5xSoft_Stream.EOS then Exit for

c=ascB(upfile_5xSoft_Stream.Read(1))

If c > 127 Then

if upfile_5xSoft_Stream.EOS then Exit for

stemp=stemp&Chr(AscW(ChrB(AscB(upfile_5xSoft_Stream.Read(1)))&ChrB(c)))

i=i+1

else

stemp=stemp&Chr(c)

End If

Next

subString=stemp

End function


Private Function inString(theStart,varStr)

dim i,j,bt,theLen,str

InString=0

Str=toByte(varStr)

theLen=LenB(Str)

for i=theStart to upfile_5xSoft_Stream.Size-theLen

if i>upfile_5xSoft_Stream.size then exit Function

upfile_5xSoft_Stream.Position=i-1

if AscB(upfile_5xSoft_Stream.Read(1))=AscB(midB(Str,1)) then

InString=i

for j=2 to theLen

if upfile_5xSoft_Stream.EOS then 

inString=0

Exit for

end if

if AscB(upfile_5xSoft_Stream.Read(1))<>AscB(MidB(Str,j,1)) then

InString=0

Exit For

end if

next

if InString<>0 then Exit Function

end if

next

End Function


Private Sub Class_Terminate 

form.RemoveAll

file.RemoveAll

set form=nothing

set file=nothing

upfile_5xSoft_Stream.close

set upfile_5xSoft_Stream=nothing

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


Private function toByte(Str)

dim i,iCode,c,iLow,iHigh

toByte=""

For i=1 To Len(Str)

c=mid(Str,i,1)

iCode =Asc(c)

If iCode<0 Then iCode = iCode + 65535

If iCode>255 Then

iLow = Left(Hex(Asc(c)),2)

iHigh =Right(Hex(Asc(c)),2)

toByte = toByte & chrB("&H"&iLow) & chrB("&H"&iHigh)

Else

toByte = toByte & chrB(AscB(c))

End If

Next

End function

End Class



Class FileInfo

dim FormName,FileName,FilePath,FileSize,FileStart

Private Sub Class_Initialize 

FileName = ""

FilePath = ""

FileSize = 0

FileStart= 0

FormName = ""

End Sub


Public function SaveAs(FullPath)

dim dr,ErrorChar,i

SaveAs=1

if trim(fullpath)="" or FileSize=0 or FileStart=0 or FileName="" then exit function

if FileStart=0 or right(fullpath,1)="/" then exit function

set dr=CreateObject("Adodb.Stream")

dr.Mode=3

dr.Type=1

dr.Open

upfile_5xSoft_Stream.position=FileStart-1

upfile_5xSoft_Stream.copyto dr,FileSize

dr.SaveToFile FullPath,2

dr.Close

set dr=nothing 

SaveAs=0

end function

End Class

</SCRIPT>



控件使用

前台:

<form enctype="multipart/form-data" method="post" action="process.asp"> 

... 

<input type="text" name="text1">

<input type="text" name="text2"> 

<input type="file" name="file1">

<input type="submit" name="submit" value="submit"> 

... 

</form> 


后台:

<!--#include file="upload.asp"-->

<%

Set upLoad = New upload_5xSoft


strOther1 = upload.form("text1")     '//其它元素

strOther2 = upload.form("text2") 


Set file=upLoad.file("file1")   '//file元素

If file.FileSize>0 Then

    sFileName = "fileName"

    sFileName= sFileName & right(file.FileName,4)

    file.SaveAs Server.mappath(sPath&sFileName)

End If 

Set file = Nothing

%> 





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