程式師世界 >> 編程語言 >> 網頁編程 >> ASP編程 >> 關於ASP編程 >> 無組件上傳圖片之文件采用方案

無組件上傳圖片之文件采用方案

編輯：關於ASP編程

首先，圖片在頁面中能查找選擇。設計表單頁面index.asp和上傳選擇頁upload.asp，upload.asp在index.asp中以iframe包含。

其次，所選圖片應能上傳到某文件夾。建立一文件夾uploadimg

最後，傳上去的圖片應如何引用？很顯然，采用UBB立即顯示。upload.asp的指向對象upfile.asp具有寫入UBB標簽的功能。

無組件上傳調試文件夾
    -- index.asp
    -- upload.asp
    -- upfile.asp
    -- uploadimg文件夾

圖片上傳采用稻香老農的無組件上傳。所以upload.inc文件必不可少。

1，upload.inc（拷貝以下文本框的所有代碼）

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>

[Ctrl+A 全部選擇進行拷貝提示：可先修改部分代碼，再點擊運行]

2，表單頁面index.asp。注意框架包含的上傳選擇頁upload.asp

[Ctrl+A 全部選擇進行拷貝提示：可先修改部分代碼，再點擊運行]

3，上傳選擇頁upload.asp 注意： enctype="multipart/form-data"

[Ctrl+A 全部選擇進行拷貝提示：可先修改部分代碼，再點擊運行]

4，最後一個文件 upfile.asp 主要作用：生成圖片名，並將圖片上傳，同樣也要將UBB標簽寫入index.asp中的textarea中。
（拷貝以下文本框的所有代碼）

formPath=upload.form("filepath")
 ''在目錄後加(/)
 if right(formPath,1)<>"/" then formPath=formPath&"/"

response.write "<body>"

iCount=0
for each formName in upload.file ''列出所有上傳了的文件
 set file=upload.file(formName) ''生成一個文件對象
 if file.filesize<100 then
   response.write "請選擇你要上傳的文件　[ <a href=# onclick=history.go(-1)>重新上傳</a> ]"
  response.end
 end if
   
 if file.filesize>100*1000 then
   response.write "文件大小超過了限制100K　[ <a href=# onclick=history.go(-1)>重新上傳</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 "文件格式不正確　[ <a href=# onclick=history.go(-1)>重新上傳</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 說明有文件數據
 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+='[img]"&FileName&"[/img]'</script>"
    exit for
    end if
  next
 iCount=iCount+1
 end if
 set file=nothing
next
set upload=nothing ''刪除此對象

Htmend iCount&" 個文件上傳結束!"

sub HtmEnd(Msg)
 set upload=nothing

response.write "上傳成功 [ <a href=# onclick=history.go(-1)>繼續上傳</a>]"
 response.end
end sub

%>
</body>
</html>

[Ctrl+A 全部選擇進行拷貝提示：可先修改部分代碼，再點擊運行]

當然，保持圖片的文件夾uploadimg不能少