SiS001! Board - [第一会所关闭注册]

标题: [求助] 有制作网页的高手没？求教 [打印本页]

作者: 124792859 时间: 2011-1-4 07:41 标题: 有制作网页的高手没？求教

本人对上传到网页的图片格式做了限制，就是是有jpg pmg gif的格式才能上传上去，但是不知道是哪里出了问题现在做有图片都上传不了，下面是限制文件格式的代码，请高手帮忙看看是不是代码写错了！

''列出所有上传了的文件
for each formName in upload.objFile
set file=upload.file(formName)
  ''''限制文件格式
  fileExt=lcase(right(file.filename,4))
  Forum_upload="gif,jpg,jpeg,png"
  Forumupload=split(Forum_upload,",")
  for i=0 to ubound(Forumupload)
if fileEXT="."&trim(Forumupload(i)) then
uploadsuc=true
exit for
else
uploadsuc=false
end if
  next
  if uploadsuc=false then
response.write "<font size=2>文件格式限制[<a href=# onclick=history.go(-1)>请重新上传</a>]</font>"
response.end
  end If
  '''''''''''''''
if file.filesize>0 then

作者: sisghoul 时间: 2011-1-4 15:56

这个是检查头文件判断类型的

<% Rem Designer:ZMM

If Request.ServerVariables("REQUEST_METHOD")="POST" Then
   Function GetByteString(str)
      For i=1 To Len(str)
         GetByteString = GetByteString & ChrB(Asc(Mid(str, i, 1)))
      Next
   End Function
   Dim vbCRLFbyte, i, formLength, formContent, formStream, pathStart, pathEnd, pathLength, pathContent, formText, fileStart, fileEnd, fileLength, regEx, Matches, contentType, fileType, fileExtension, fileName, fileStreamGet, fileStreamPut
   Const adTypeBinary = 1
   Const adTypeText = 2
   vbCRLFbyte = GetByteString(vbCRLF & vbCRLF)
   formLength = Request.TotalBytes
   formContent = Request.BinaryRead(formLength)
   Set formStream = Server.CreateObject("ADODB.Stream")
   formStream.Type = adTypeText
   formStream.Mode = 3
   formStream.Open
   formStream.WriteText formContent
   formStream.Position = 0
   formStream.CharSet = "GB2312"
   formText = formStream.ReadText
   formStream.Close
   Set formStream = Nothing

   Rem 获取文件头
   Set regEx = New RegExp
   regEx.Pattern = "\sContent-Type:\s+(.*?)\s"
   regEx.Global = True
   regEx.IgnoreCase = True
   Set Matches = regEx.Execute(formText)
   Set regEx = Nothing
   contentType = Replace(Mid(Matches(0).Value, 1, Len(Matches(0).Value) - 1), "Content-Type: ", "")
   fileType = Split(contentType, "/", -1, 1)(1)

   pathStart = InStr(1, formText, "filename=" & Chr(34)) + 10
   pathEnd = InStr(pathStart, formText, Chr(34))
   pathLength = pathEnd - pathStart
   pathContent = Mid(formText, pathStart, pathLength)
   Set regEx = New RegExp
   regEx.Pattern = "^.*(\.[^\.]*)$"
   regEx.Global = False
   regEx.IgnoreCase = True
   fileExtension = regEx.Replace(pathContent, "$1")
   Set regEx = Nothing
   fileName = Year(Now) & Month(Now) & Day(Now) & Hour(Now) & Minute(Now) & Second(Now) & fileExtension
   If InStr(1, "|GIF|PJPEG|X-PNG|BMP|", "|" & Ucase(fileType) & "|")>0 Then
      fileStart = InStrB(1, formContent, vbCRLFbyte) + 3
      fileEnd = formLength - 48
      fileLength = fileEnd - fileStart + 1
      Set fileStreamGet = Server.CreateObject("ADODB.Stream")
      fileStreamGet.Type = adTypeBinary
      fileStreamGet.Mode = 3
      fileStreamGet.Open
      fileStreamGet.Write formContent
      fileStreamGet.Position = fileStart
      Set fileStreamPut = Server.CreateObject("ADODB.Stream")
      fileStreamPut.Type = adTypeBinary
      fileStreamPut.Mode = 3
      fileStreamPut.Open
      fileStreamPut.Write fileStreamGet.Read(fileLength)
      fileStreamPut.SaveToFile(Server.MapPath(fileName))
      fileStreamGet.Close
      Set fileStreamGet = Nothing
      fileStreamPut.Close
      Set fileStreamPut = Nothing
      Response.Write "<script language=""javascript""> window.alert('文件上传成功！'); window.location.replace('" & Request.ServerVariables("SCRIPT_NAME") & "'); </script>"
   Else
      Response.write "filetype=" & filetype
      Response.Write "<script language=""javascript""> window.alert('不允许上传此类型文件，上传失败！'); window.location.replace('" & Request.ServerVariables("SCRIPT_NAME") & "'); </script>"
   End If
End If %>
<html>
<head>
<title>上传文件</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<form action="<%=Request.ServerVariables("SCRIPT_NAME")%>" method="post" enctype="multipart/form-data" onsubmit="return (oFile.value!='');">
   <input type="file" name="oFile" onkeydown="return false;" oncontextmenu="return false;" onpaste="return false;" ondragenter="return false;">
   <input type="submit" value="上传文件">
</form>
</body>
</html>

作者: wshgm 时间: 2011-1-4 17:05

看了你的代码，还没看出哪里出问题了，建议你在几个节点上加断点，用respone反馈一下结果就比较容易查到问题所在了：
1. 在fileExt=lcase(right(file.filename,4))之后显示一下fileExt的值
2. 在 if fileEXT="."&trim(Forumupload(i)) then 下显示 i 和 "."&trim(Forumupload(i)) 后的结果，可以把"."&trim(Forumupload(i)) 先赋值到一个变量，再到if语句里面做比较，这样比较直观。

另外，建议：
1. 把 Forum_upload="gif,jpg,jpeg,png" 和  Forumupload=split(Forum_upload,",")都放到 for each formName in upload.objFile之上，这个过程只需做一次就可以了，不需要在循环里面做；
2. 把下面的代码
  for i=0 to ubound(Forumupload)
if fileEXT="."&trim(Forumupload(i)) then
uploadsuc=true
exit for
else
uploadsuc=false
end if
  next
改为
  uploadsuc=false
  for i=0 to ubound(Forumupload)
if fileEXT="."&trim(Forumupload(i)) then
uploadsuc=true
exit for
end if
  next

作者: kennywae 时间: 2011-1-4 18:44

虽然我不是高手但是我看出问题了，你上传的服务器限制了你的格式，建议换个服务器试试，或者联系卖给你虚拟机的IDC

作者: antiy1984 时间: 2011-1-4 21:06

fileExt=lcase(right(file.filename,4))
这一句取后边4个字节，那如果是filename.gif的文件的话，是不是变成取".gif"出来，是不是错在这里呢，取文件扩展名的函数应该有的吧！

作者: comic00 时间: 2011-1-4 22:23

看了看楼主发的代码，不是php和js，帮不了你。

欢迎光临 SiS001! Board - [第一会所关闭注册] (http://154.84.5.230/bbs/)