多表单域无组件文件上传的例子

最近经常有人问到这类问题,在此转贴一下,内容:


1。数据库表结构(access(小型网站之最爱))：
UserID:Text(保存上传文件的用户ID)
FileContentType:Text(用来保存上传文件的类型，eg:"Application/msword"，主要用来使用户能正确下载此文件）
FileContent:OLE Object（保存文件数据）

2。HTML文件
mPreviousFile.htm
<Form name="upload_file" enctype="multipart/form-data" action="mPreviousFile.asp" method=post>
<input type=hidden name="UserID" value="abc">
<input type=hidden name="FileUploadStart"> 这里用来表示开始文件数据上传
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"> 这里用来表示文件数据结束
<input type=submit value=Submit>
</Form>

3。ASP文件
mPreviousFile.asp

<%
Response.Expires=0
Function bin2str(binstr)
    Dim varlen,clow,ccc,skipflag

    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


varByteCount = Request.TotalBytes
bnCRLF = chrB( 13 ) & chrB( 10 )
binHTTPHeader=Request.BinaryRead(varByteCount)        
Divider = LEFTB( binHTTPHeader,  INSTRB( binHTTPHeader, bnCRLF ) - 1 )

开始读非文件域的数据
Do while lenB(binHTTPHeader)>46
    
    binHeaderData = LeftB(binHTTPHeader, INSTRB( binHTTPHeader, bnCRLF & bnCRLF )-1)
    strHeaderData=bin2str(binHeaderData)

    lngFieldNameStart=Instr(strHeaderData,"name="&chr(34))+Len("name="&chr(34))