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。
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（拷贝以下文本框的所有代码）
<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>
[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]
2，表单页面index.asp。注意包含的上传选择页upload.asp
<form name="form_name" method="POST" action="add.asp">
<textarea cols="100" name="cn_content" rows="18" width="100%"></textarea>
</form>
<iframe border="0" frameBorder="0" noResize scrolling="no" width="100%" src="upload.asp"></iframe>
3，上传选择页upload.asp 注意： enctype="multipart/form-data"
<form name="form" method="post" action="upfile.asp" enctype="multipart/form-data">
<input type="hidden" name="filepath" value="uploadimg">
<input type="hidden" name="act" value="upload">
<input type="file" name="file1" size=40>
<input type="submit" class=button name="Submit" value="上传图片" onclick="parent.document.forms[0].Submit.disabled=true">类型：gif,jpg，限制：100K
</form>
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。
（拷贝以下文本框的所有代码）
<!--#include file="upload.inc"-->
<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+='[img]"&FileName&"[/img]'</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>
[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]
当然，保持图片的文件夹uploadimg不能少
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计算机技术与应用 → 『 Dot NET,C#,ASP,VB 』 → 无组件上传图片之文件采用方案[转帖]
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2005/1/17 19:21:00
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无组件上传图片之文件采用方案[转帖]
