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化境ASP无组件上传

来源:互联摘选 日期:2005-03-08 05:11

  一直以来,由于FileSystemObject的局限,所以ASP最大的难题就是文件上传,大多解决法就是安装第三方上传组件。可第三方组件有很多问题,有的组件要注册,有的组件要在表单中加上他的版权信息。还有的就是组件的兼容问题。在网上也流传了很多无组件上传的代码,但都是只能上传文本文件,或是只能将文件上传到数据库中。作者这段时间在研究ASP,发现可以不用第三方组件上传任意类型的文件。就写了这个类,给大家一个方便,整个类放在一个文件:upload_5xsoft.inc 在 Example 目录下还有一个完整的多文件上传示例程序,可以直接使用。

  由于《化境无组件上传程序》问题很多,很多网友都发来他们自己的修改版,各有特点。这里,作者采用了网友梁无惧给出的修改版,再作了些修改,解决了原来的已发现的所有问题(具体看说明)。上传速度也有了很大的提高。

  upload_5xsoft.inc

  <SCRIPT RUNAT=SERVER LANGUAGE=VBSCRIPT>

'''''''''''''''''''''''''''''''''''''''''''''''''
'
'请保留此信息: 稻香老农制作 
'
'''''''''''''''''''''''''''''''''''''''''''''''''

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="化境编程界HTTP上传程序 Version 1.0"
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>

  upfile.asp

<%OPTION EXPLICIT%>
<!--#include FILE="upload_5xsoft.inc"-->
<html>
<head>
<title>文件上传</title>
</head>
<body>
<br>化境文件上传!<hr size=1 noshadow width=300 align=left><br><br>

</body>
</html>

  upfile.htm

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style type="text/css">
<!--
td {  font-size: 9pt}
a {  color: #000000; text-decoration: none}
a:hover {  text-decoration: underline}
.tx {  height: 16px; width: 30px; border-color: black black #000000; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 1px; border-left-width: 0px; font-size: 9pt; background-color: #eeeeee; color: #0000FF}
.bt {  font-size: 9pt; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; height: 16px; width: 80px; background-color: #eeeeee; cursor: hand}
.tx1 { height: 20px; width: 30px; font-size: 9pt; border: 1px solid; border-color: black black #000000; color: #0000FF}
-->
</style>
</head>

<body bgcolor="#FFFFFF" text="#000000">
<form name="form1" method="post" action="upfile.asp" enctype="multipart/form-data" >
  <table border="1" cellspacing="0" cellpadding="0" bordercolorlight="#000000" bordercolordark="#CCCCCC" width="91" height="23">
    <tr>
      <td align="left" valign="middle" height="18" width="18">&nbsp;</td>
      <td bgcolor="#CCCCCC" align="left" valign="middle" height="18" width="67"> 文件上传</td>
    </tr>
  </table>
  <br>
  <input type="hidden" name="act" value="upload">
  <br>
  <table width="71%" border="1" cellspacing="0" cellpadding="5" align="center" bordercolordark="#CCCCCC" bordercolorlight="#000000">
    <tr bgcolor="#CCCCCC">
      <td height="22" align="left" valign="middle" bgcolor="#CCCCCC">&nbsp;化境编程界文件上传</td>
    </tr>
    <tr align="left" valign="middle" bgcolor="#eeeeee">
      <td bgcolor="#eeeeee" height="92">
        <script language="javascript">
   function setid()
   {
   str='<br>';
   if(!window.form1.upcount.value)
    window.form1.upcount.value=1;
    for(i=1;i<=window.form1.upcount.value;i++)
      str+='文件'+i+':<input type="file" name="file'+i+'" style="width:400" class="tx1"><br><br>';
   window.upid.innerHTML=str+'<br>';
   }
   </script>
        <li> 需要上传的个数
          <input type="text" name="upcount" class="tx" value="1">
          <input type="button" name="Button" class="bt" onclick="setid();" value="· 设定 ·">
        </li>
        <br>
        <br>
        <li>上传到:
          <input type="text" name="filepath" class="tx" style="width:350" value="">
        </li>
      </td>
    </tr>
    <tr align="center" valign="middle">
      <td align="left" id="upid" height="122"> 文件1:
        <input type="file" name="file1" style="width:400" class="tx1" value="">
      </td>
    </tr>
    <tr align="center" valign="middle" bgcolor="#eeeeee">
      <td bgcolor="#eeeeee" height="24">
        <input type="submit" name="Submit" value="· 提交 ·" class="bt">
        <input type="reset" name="Submit2" value="· 重执 ·" class="bt">
      </td>
    </tr>
  </table>
</form>
</body>
</html>
<script language="javascript">

setid();
</script>

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