ASP文件上传工具(只能上传一定大小文件)(2)

        Err.Clear
      Else
        SaveFile = CheckFileExists(SaveFile)
        k=Instrb(FormDataAll_d,CrLf_e&CrLf_e)+4
        l=Instrb(k+1,FormDataAll_d,leftB(FormDataAll_d,FormStart_f-1))-k-2
        FormStream_h.Type=1
        FormStream_h.Open
        UploadStream_c.Position=k-1
        UploadStream_c.CopyTo FormStream_h,l
        FormStream_h.SaveToFile SaveFile,2
       
        SaveFileName = Mid(SaveFile,InstrRev(SaveFile,"\")+1)
        Response.write "文件上传： <span style=""color:red;"">" &SaveFileName& " </span>文件上传成功!　<a href=""" &upurl&""">继续上传文件</a><br />"
      End If
    Else
      Response.write "文件上传： <span style=""color:red;"">文件格式不正确!</span>　<a href=""" &upurl&""">重新上传文件</a><br />"
    End If
  Else
%>
<script language="Javascript">
<!--
function ValidInput()
{
   
if(document.upform.upfile.value=="")
  {
    alert("请选择上传文件！")
    document.upform.upfile.focus()
    return false
  }
  return true
}
// -->
</script>
<form action='<%= Request.ServerVariables("URL") %>' method='post' name="upform" onSubmit="return ValidInput()"
enctype="multipart/form-data">
文件上传：
<input type='file' name='upfile' size="40"> <input type='submit' value="上传">
</form>
<%
  End if
  Set FormStream_h = Nothing
  UploadStream.Close
  Set UploadStream = Nothing
%>
</body>
</html>
<%
  '判断文件类型是否合格
  Function CheckFileExt(FileName,ExtName) '文件名,允许上传文件类型
    FileType = ExtName
    FileType = Split(FileType,",")
    For i = 0 To Ubound(FileType)
      If LCase(Right(FileName,3)) = LCase(FileType(i)) then
      CheckFileExt = True