ASP程序无组件上传图片之文件采用方案

2022-07-15 80酷酷网 80kuku.com

　　程序|上传|上传图片|无组件　　首先，图片在页面中能查找选择。设计表单页面index.asp和上传选择页upload.asp，upload.asp在index.asp中以iframe包含。

　　其次，所选图片应能上传到某文件夹。建立一文件夹uploadimg

　　最后，传上去的图片应如何引用？很显然，采用UBB立即显示。upload.asp的指向对象upfile.asp具有写入UBB标签的功能。

无组件上传调试文件夹
    -- index.asp
    -- upload.asp
    -- upfile.asp
    -- uploadimg文件夹

　　图片上传采用稻香老农的无组件上传。所以upload.inc文件必不可少。

　　1，upload.inc

<SCRIPT RUNAT=SERVER LANGUAGE=VBSCRIPT>
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=""
        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>

　　2，表单页面index.asp。注意框架包含的上传选择页upload.asp

　　3，上传选择页upload.asp 注意： enctype="multipart/form-data"

　　4，最后一个文件 upfile.asp 主要作用：生成图片名，并将图片上传，同样也要将UBB标签写入index.asp中的textarea中。

<html>
<head>
<title>文件上传</title>
</head>
<body>
<script>
parent.document.forms[0].Submit.disabled=false;
</script>
<%
dim upload,file,formName,formPath,iCount,filename,fileExt
set upload=new upload_5xSoft ''建立上传对象
formPath=upload.form("filepath")
''在目录后加(/)
if right(formPath,1)<>"/" then formPath=formPath&"/"
response.write "<body>"
iCount=0
for each formName in upload.file ''列出所有上传了的文件
set file=upload.file(formName) ''生成一个文件对象
if file.filesize<100 then
     response.write "请选择你要上传的文件　[ <a href=# onclick=history.go(-1)>重新上传</a> ]"
    response.end
end if

if file.filesize>100*1000 then
     response.write "文件大小超过了限制100K　[ <a href=# onclick=history.go(-1)>重新上传</a> ]"
    response.end
end if
fileExt=lcase(right(file.filename,4))
uploadsuc=false
Forum_upload="gif,jpg,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 "文件格式不正确　[ <a href=# onclick=history.go(-1)>重新上传</a> ]"
    response.end
end if
randomize
ranNum=int(90000*rnd)+10000
filename=formPath&year(now)&month(now)&day(now)&hour(now)&minute(now)&second(now)&ranNum&fileExt
if file.FileSize>0 then         ''如果 FileSize > 0 说明有文件数据
file.SaveAs Server.mappath(FileName)   ''保存文件
    for i=0 to ubound(Forumupload)
        if fileEXT="."&trim(Forumupload(i)) then
         response.write "<script>parent.form_name.cn_content.value+=''</script>"
        exit for
        end if
    next
iCount=iCount+1
end if
set file=nothing
next
set upload=nothing ''删除此对象
Htmend iCount&" 个文件上传结束!"
sub HtmEnd(Msg)
set upload=nothing
response.write "上传成功 [ <a href=# onclick=history.go(-1)>继续上传</a>]"
response.end
end sub
%>
</body>
</html>

　　当然，保持图片的文件夹uploadimg不能少