asp类编写的上传代码

最新推荐文章于 2015-07-05 18:18:52 发布

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最新推荐文章于 2015-07-05 18:18:52 发布

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文章标签： asp stream upload ext vbscript input

本文链接：https://blog.youkuaiyun.com/daiyuan5210/article/details/3426864

可以直接复制可以测试哦!

<%@LANGUAGE="VBSCRIPT" CODEPAGE="936"%>
<%
Response.Buffer=True
Server.ScriptTimeOut=9999999

On Error Resume Next
%>

<%
Class HZTUpload

Public filesize,filetype,filepath,reservefilename,formid,txtid
Private formsize,formdata,bincrlf,oencrlfplace,twocrlfplace,ext,p,l,filename,savefilepath,rndfilename
Private usingstream,stream,fso

Private Sub Class_Initialize
       filesize=1024 ’文件大小,k
       filetype="gif,png,jpg,jpeg" ’文件类型
       filepath="Upload" ’保存目录
       reservefilename=0 ’0:不保留原文件名,1:保留原文件名
       formid="myform"
       txtid="txt"

       Randomize()
       ’系统生成文件名
       rndfilename=Year(Now())&Month(Now())&Day(Now())&Hour(Now())&Minute(Now())&Second(Now())&Int((999999-100000+1)*Rnd()+100000)

       Set usingstream=Server.CreateObject("ADODB.Stream")
       Set stream=Server.Createobject("ADODB.Stream")
       Set fso=Server.CreateObject("Scripting.FileSystemObject")
End Sub

Private Sub Class_Terminate
       usingstream.Close():Set usingstream=Nothing
       stream.Close():Set stream=Nothing
       Set fso=Nothing
End Sub

Sub Upload() ’要返回的form和text的id

       If Right(filepath,1)<>"/" Then filepath=filepath&"/"

       formsize=Request.TotalBytes
       formdata=Request.BinaryRead(formsize)

       usingstream.Type=1
       usingstream.Open()
       usingstream.Write(formdata)

       bincrlf=ChrB(13)&ChrB(10) ’二进制回车换行
       oencrlfplace=InStrB(formdata,bincrlf) ’44,第一次回车换行位置
       twocrlfplace=InStrB(oencrlfplace+1,formdata,bincrlf) ’第二次回车换行位置

       stream.Type=1
       stream.Open()
       usingstream.Position=oencrlfplace+1
       usingstream.CopyTo stream,twocrlfplace-oencrlfplace-3 ’得到第二行数据,twocrlfplace-onecrlfplace-("长度)
       stream.Position=0
       stream.Type=2 ’字符串
       stream.CharSet="GB2312"
       streamtext=stream.Readtext() ’读取第二行数据
       stream.Close()

filename=Mid(streamtext,InstrRev(streamtext,"")+1) ’得到文件名

       p=InStrB(formdata,bincrlf&bincrlf)+4 ’4为两次回车换行长度
       l=InStrB(p+1,formdata,LeftB(formdata,oencrlfplace-1))-p-2 ’文件内容部分长度,onecrlfplace-1为第一行数据(也是分隔符),2为回车换行长度
       stream.Type=1
       stream.Open()
       usingstream.Position=p-1
       usingstream.CopyTo stream,l ’文件内容数据

’---------------------------------------------------------------------------------------------------
       Call CheckFolder(filepath) ’检测文件夹是否存在,如果不存在则创建
       ext=Right(filename,1+Len(filename)-InStrRev(filename,".")) ’文件扩展名:.gif

       If        reservefilename=0 Then     ’自动命名
           savefilepath=Server.MapPath(filepath&rndfilename&ext)
           filename=rndfilename&ext
       Else ’保留原文件名
           filename=CheckFile(Left(filename,InStrRev(filename,".")-1),ext)
           savefilepath=Server.MapPath(filepath&filename)
       End If

       If CheckExt(Mid(ext,2))=False Then Call Message(1) ’检测文件类型
       If ceil(stream.Size/1024)>filesize Then Call Message(2)’检测文件大小
’---------------------------------------------------------------------------------------------------
       stream.SaveToFile savefilepath,2 ’保存文件

       If Err.Number=0 Then
           Call Message(0)
       Else
           Call Message(404)
       End If

End Sub

Function ceil(v) ’实现JS中Math.ceil()
       If v>0 Then
           v=Fix(v)+Sgn(v-Fix(v))
       Else
           v=Fix(v)
       End If
       ceil=v
End Function

Function CheckFolder(foldername) ’检测文件夹是否存在,如果不存在则创建
       If fso.FolderExists(Server.MapPath(foldername)) Then
           Exit Function
       Else
           fso.CreateFolder(Server.MapPath(foldername))
       End If
End Function

Function CheckFile(fname,ext) ’检测文件是否存在,如果存在则重命名,如:重名文件(1).txt
       If fso.FileExists(Server.MapPath(filepath&fname&ext)) Then
           Dim i
           i=1
           Do While (fso.FileExists(Server.MapPath(filepath&fname&"("&i&")"&ext)))
               i=i+1
           Loop

           CheckFile=fname&"("&i&")"&ext
       Else
           CheckFile=fname&ext
       End If
End Function

Function CheckExt(ext) ’检测文件类型合法性
       Dim i,istrue,exts
       exts=Split(filetype,",")
       For i=0 To UBound(exts)
           If LCase(ext)=exts(i) Then
               istrue=True
               Exit For
          Else
              istrue=False
          End If
      Next
      CheckExt=istrue
End Function

Sub Message(mi)
      Select Case mi
          Case 1:
              Response.Write("<script>")
              Response.Write("window.alert(’文件类型非法!’);history.back();")
              Response.Write("</script>")
              Response.End()
          Case 2:
              Response.Write("<script>")
              Response.Write("window.alert(’文件大小超过限制!’);history.back();")
              Response.Write("</script>")
              Response.End()
          Case 0:
              Response.Write("<font color=’0000FF’>文件上传成功!</font>")
              Response.Write("   <a href=’"&Request.ServerVariables("URL")&"’>重新上传</a>")
              Response.Write("<script>")
              Response.Write("window.top.document."&formid&"."&txtid&".value=’"&filename&"’;")
              Response.Write("</script>")
              Response.End()
          Case 404:
              Response.Write("<font color=’FF0000’>文件上传失败!</font>")
              Response.Write("   <a href=’"&Request.ServerVariables("URL")&"’>重新上传</a>")
             Response.End()
     End Select
End Sub

End Class

If Request.TotalBytes>0 Then
     Set hg=New HZTUpload
     ’hg.filepath="Pic/" ’文件保存路径,默认：Upload
     ’hg.filetype="gif,png,jpg,jpeg,rar" ’文件类型,默认:gif,png,jpg,jpeg
     ’hg.filesize=1024 ’文件大小,单位k,默认:1024
     ’hg.reservefilename=0 ’是否保留原文件名,0:否,1:是,默认:0
     hg.formid="mf" ’接收文件名的form的id,默认：myform
     hg.txtid="txt" ’接收文件名的text的id,默认:txt
     hg.Upload() ’保存文件,form名称,text名称
Else
%>
<form id="mf" name="mf" method="post" action="<%=Request.ServerVariables("URL")%>" enctype="multipart/form-data">
<input type="file" id="f" name="f" />
<br />
<input type="submit" value="提交" />
<input type="reset" value="重置" />
</form>
<%End If%>
</body>
</html>