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    關于無組件文件上傳的文章已經(jīng)很多了，所以在這里我不想再解釋無組件文件上傳的原理。在ASP中無法將二進制文件數(shù)據(jù)直接保存成文件，所以我們一般還是利用數(shù)據(jù)庫來保存用戶上傳的文件。

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">1。數(shù)據(jù)庫表結構(Access)：

UserID:Text(保存上傳文件的用戶ID)

FileContentType:Text(用來保存上傳文件的類型，eg:"Application/msword"，主要用來使用戶能正確下載此文件）

FileContent:OLE Object（保存文件數(shù)據(jù)）

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">2。HTML文件

muploadfile.htm

<Form name="upload_file" enctype="multipart/form-data" action="muploadfile.asp" method=post>

<input type=hidden name="UserID" value="abc">

<input type=hidden name="FileUploadStart"> '這里用來表示開始文件數(shù)據(jù)上傳

File to send: <BR>

<INPUT TYPE="file" name="file_up" size="30"><br>

<INPUT TYPE="file" name="file_up" size="30"><br>

<input type=hidden name="FileUploadEnd"> '這里用來表示文件數(shù)據(jù)結束

<input type=submit value=Submit>

</Form>

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">3。ASP文件

muploadfile.asp

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px"><%

Response.Expires=0

Function bin2str(binstr)

Dim varlen,clow,ccc,skipflag

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">skipflag=0

ccc = ""

If Not IsNull(binstr) Then

varlen=LenB(binstr)

For i=1 To varlen

If skipflag=0 Then

clow = MidB(binstr,i,1)

If AscB(clow) > 127 Then

ccc =ccc & Chr(AscW(MidB(binstr,i+1,1) & clow))

skipflag=1

Else

ccc = ccc & Chr(AscB(clow))

End If

Else

skipflag=0

End If

Next

End If

bin2str = ccc

End Function

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">

varByteCount = Request.TotalBytes

bnCRLF = chrB( 13 ) & chrB( 10 )

binHTTPHeader=Request.BinaryRead(varByteCount)

Divider = LEFTB( binHTTPHeader, INSTRB( binHTTPHeader, bnCRLF ) - 1 )

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">'開始讀非文件域的數(shù)據(jù)

Do while lenB(binHTTPHeader)>46



binHeaderData = LeftB(binHTTPHeader, INSTRB( binHTTPHeader, bnCRLF & bnCRLF )-1)

strHeaderData=bin2str(binHeaderData)

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">lngFieldNameStart=Instr(strHeaderData,"name="&chr(34))+Len("name="&chr(34))

lngFieldNameEnd=Instr(lngFieldNameStart,strHeaderData,chr(34))





strFieldName=Mid(strHeaderData,lngFieldNameStart,lngFieldNameEnd-lngFieldNameStart)

strFieldName=Trim(strFieldName)

strFieldName=Replace(strFieldName,vbcrlf,vbnullstring)



'判斷文件數(shù)據(jù)時候開始

If strComp(strFieldName,"FileUploadStart",1)=0 Then

binHTTPHeader=MIDB(binHTTPHeader,INSTRB( DataStart + 1, binHTTPHeader, divider ))

exit do

End if



DataStart = INSTRB( binHTTPHeader, bnCRLF & bnCRLF ) + 4

DataEnd = INSTRB( DataStart + 1, binHTTPHeader, divider ) - DataStart

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">binFieldValue=MIDB( binHTTPHeader, DataStart, DataEnd )

strFieldValue=bin2str(binFieldValue)

strFieldValue=Trim(strFieldValue)

strFieldValue=Replace(strFieldValue,vbcrlf,vbnullstring)

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">'非文件上傳域變量賦值

execute strFieldName&"="""&strFieldValue&""""





binHTTPHeader=MIDB(binHTTPHeader,INSTRB( DataStart + 1, binHTTPHeader, divider ))



loop

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">'開始處理文件數(shù)據(jù)

Do while lenB(binHTTPHeader)>46





binHeaderData = LeftB(binHTTPHeader, INSTRB( binHTTPHeader, bnCRLF & bnCRLF )-1)



strHeaderData=bin2str(binHeaderData)



'讀取上傳文件的Content-Type

lngFileContentTypeStart=Instr(strHeaderData,"Content-Type:")+Len("Content-Type:")

strFileContentType=Trim(Mid(strHeaderData,lngFileContentTypeStart))

strFileContentType=Replace(strFileContentType,vbCRLF,vbNullString)



'讀取上傳的文件名

lngFileNameStart=Instr(strHeaderData,"filename="&chr(34))+Len("filename="&chr(34))

lngFileNameEnd=Instr(lngFileNameStart,strHeaderData,chr(34))

strFileName=Mid(strHeaderData,lngFileNameStart,lngFileNameEnd-lngFileNameStart)

strFileName=Trim(strFileName)

strFileName=Replace(strFileName,vbCRLF,vbNullString)



'讀取上傳文件數(shù)據(jù)

DataStart = INSTRB( binHTTPHeader, bnCRLF & bnCRLF ) + 4

DataEnd = INSTRB( DataStart + 1, binHTTPHeader, divider ) - DataStart



If strFileName<>"" Then



binFieldValue=MIDB( binHTTPHeader, DataStart, DataEnd )



'將上傳的文件寫入數(shù)據(jù)庫

set conn = Server.CreateObject("ADODB.Connection")

conn.Open "DSN=abc"



SQL="select * from User_File"

set rs=server.CreateObject("ADODB.Recordset")

rs.Open sql,conn,3,3

rs.addnew

rs("UserID")=UserID

rs("FileContentType")=strFileContentType

rs("FileContent").AppendChunk binFieldValue

rs.update

rs.close

set rs=Nothing

conn.Close

set conn=Nothing



End if



binHTTPHeader=MIDB(binHTTPHeader,INSTRB( DataStart + 1, binHTTPHeader, divider ))



loop

%>

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">4。下載用戶上傳的文件

<%

Response.Buffer = true

Response.Clear

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">UserID=request("UserID")

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">Set conn=server.createobject("adodb.connection")

set rs=server.createobject("adodb.recordset")

conn.open "DSN=UploadFile"

rs.open "select * from User_File where UserID='"&UserID&"'",conn,3,3

Response.ContentType = rs("FileContentType")

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">lngOffset=0

conChunkSize=1024

lngPictSize=rs("FileContent").ActualSize

Do While lngOffset < lngPictSize

varChunk = rs("FileContent").GetChunk(conChunkSize)

Response.BinaryWrite varChunk

lngOffset = lngOffset + conChunkSize

If lngOffset > lngPictSize Then Exit Do

Loop

style="PADDING-RIGHT: 10px; DISPLAY: block; PADDING-LEFT: 10px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px">rs.close

set rs=Nothing

conn.close

set conn=nothing

%>