ASP文件上传工具(只能上传一定大小文件)

2018-09-06 13:11

阅读:59

  <%@LANGUAGE="VBSCRIPT" CODEPAGE="936"%>
<%
Response.Buffer = True
Server.ScriptTimeOut=9999999
On Error Resume Next
%>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<meta http-equiv="Content-Language" content="zh-cn" />
<meta name="description" content="ASP文件上传工具" />
<style type="text/css">
<!--
body,input {font-size:12px;}
-->
</style>
<title>ASP文件上传工具</title>
</head>
<body id="body">
<%
upurl=Request.ServerVariables("URL")
ExtName = "jpg,gif,png,txt,rar,zip,doc,pdf" '允许扩展名
SavePath = "upload" '保存路径
If Right(SavePath,1)<>"/" Then SavePath=SavePath"/" '在目录后加(/)
CheckAndCreateFolder(SavePath)
UpLoadAll_a = Request.TotalBytes '取得客户端全部内容
If(UpLoadAll_a>0) Then
Set UploadStream_c = Server.CreateObject("ADODB.Stream")
UploadStream_c.Type = 1
UploadStream_c.Open
UploadStream_c.Write Request.BinaryRead(UpLoadAll_a)
UploadStream_c.Position = 0
FormDataAll_d = UploadStream_c.Read
CrLf_e = chrB(13)chrB(10)
FormStart_f = InStrB(FormDataAll_d,CrLf_e)
FormEnd_g = InStrB(FormStart_f+1,FormDataAll_d,CrLf_e)
Set FormStream_h = Server.Createobject("ADODB.Stream")
FormStream_h.Type = 1
FormStream_h.Open
UploadStream_c.Position = FormStart_f + 1
FormStream_h.Position = 0
FormStream_h.Type = 2
FormStream_h.CharSet = "GB2312"
FormStreamText_i = FormStream_h.Readtext
FormStream_h.Close
FileName_j = Mid(FormStreamText_i,InstrRev(FormStreamText_i,"\")+1,FormEnd_g)
If(CheckFileExt(FileName_j,ExtName)) Then
SaveFile = Server.MapPath(SavePath FileName_j)
If Err Then
Response.Write "文件上传: <span style=""color:red;"">文件上传出错!</span><a href=""" upurl""">重新上传文件</a><br />"
Err.Clear
Else
SaveFile = CheckFileExists(SaveFile)
k=Instrb(FormDataAll_d,CrLf_eCrLf_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
Exit Function
Else
CheckFileExt = False
End if
Next
End Function
'检查上传文件夹是否存在,不存在则创建文件夹
Function CheckAndCreateFolder(FolderName)
fldr = Server.Mappath(FolderName)
Set fso = CreateObject("Scripting.FileSystemObject")
If Not fso.FolderExists(fldr) Then
fso.CreateFolder(fldr)
End If
Set fso = Nothing
End Function
'检查文件是否存在,重命名存在文件
Function CheckFileExists(FileName)
Set fso=Server.CreateObject("Scripting.FileSystemObject")
If fso.FileExists(SaveFile) Then
i=1
msg=True
Do While msg
CheckFileExists = Replace(SaveFile,Right(SaveFile,4),"_" i Right(SaveFile,4))
If not fso.FileExists(CheckFileExists) Then
msg=False
End If
i=i+1
Loop
Else
CheckFileExists = FileName
End If
Set fso=Nothing
End Function
%>


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