基本原理是：采用ADO Stream对象的BinaryRead方法将FORM中的所有数据读出，从中截取出所需的文件数据，以二进制文件方式存盘。
下面是上传文件页面的一个例子：
＜html＞
＜body＞
＜form name="Upload" Method="Post" Enctype="multipart/form-data" Action="Upload.asp"＞
＜input type="file" name="FileName"＞
＜INPUT TYPE="Submit" VALUE="Upload"＞＜/TD＞
＜/form＞
＜/body＞
＜/html＞
扩展资料
几种文件上传技术的比较
1、基于HTTP协议
该方法需要编程者利用第三方软件，如DELPHI、VB等，在应用程序中先进行HTTP协议编程，然后将待上传文件内容按HTTP协议的格式打包，最后向WEB服务器发送上传的请求报文，从而实现文件的上传。
因尺枣为DELPHI和VB不能编写完整的WEB网络程序，只能编写WEB小应用程序，因此，该方法只用于功能受限的网络应用。
2、基于VB（或DELPHI等）开发的文件上传组件
该方法利用VB（或DELPHI等编程语言）开发ASP服务器组件，实现特定的文件上传服务。它首先利用ASP表单功能将文件（二进制格式）从用户端上传到服务器端，然后使用VB开发的组件，对二进制文件进行处理，成为可以正常读写的文件。
该方法要求编程者不仅掌握ASP语言，而且还能利用VB等第三方语言进行组件编程，增加了开发的难度。
3、基于数据库技术
该方法和上个方法有类似之处。不同的地方在于对上传的二进制文件的处理上。它使用数据库来保存二进陵唯拆制文件。无论是小型数据库还是大型数据库都提供了存储二进制数据的数据类型，只要以山如Append Chunk方式将数据存入相应的字段就可以了。
该方法虽然简单可行，但是因为每次上传的文件大小都是不一样的，因此，会对数据库的空间造成很大的浪费，降低了数据的访问速度；并且使得文件只能在数据库环境下进行访问，造成了很大的不便。
分类: 电脑/网络 >>程序设计 >>其他编程语言问题描述:
asp程迟纳哗序如何上传？
解析:
先给你个无组茄握件UPLAOD 的类给你。包括说明 至于删除使用FSO的 DELETEFILE就码行可以了
文件：upload_5xsoft.inc
<!--METADATA TYPE="TypeLib" UUID="{***********-0000-0010-8000-00aa006d2ea4}"-->
<%
dim fo,gPath,gAct,gFileName,gFilePath,g,gRootUrl,gBaseUrl,gPage,gSearch,gEachPage,gFolder,gFilter
dim gPageSize,sTemp,gNoFile
dim sfor(28,2)
gPageSize=100
gRootUrl=Session("webeditbase")
if right(gRootUrl,1)<>"/" then gRootUrl=gRootUrl&"/"
gNoFile=array("asp","aspx") '禁止访问的脚本
set fo=Server.CreateObject("Scripting.FileSystemObject")
sFor(0,0)="txt":sFor(0,1)=1
sFor(1,0)="chm":sFor(1,1)=2
sFor(2,0)="hlp":sFor(2,1)=2
sFor(3,0)="doc":sFor(3,1)=3
sFor(4,0)="pdf":sFor(4,1)=4
sFor(5,0)="gif":sFor(5,1)=6
sFor(6,0)="":sFor(6,1)=6
sFor(7,0)="png":sFor(7,1)=6
sFor(8,0)="bmp":sFor(8,1)=6
sFor(9,0)="asp":sFor(9,1)=7
sFor(10,0)="jsp":sFor(10,1)=7
sFor(11,0)="js" :sFor(11,1)=7
sFor(12,0)="":sFor(12,1)=8
sFor(13,0)="":sFor(13,1)=8
sFor(14,0)="s":sFor(14,1)=8
sFor(15,0)="zip":sFor(15,1)=9
sFor(16,0)="rar":sFor(16,1)=9
sFor(17,0)="exe":sFor(17,1)=10
sFor(18,0)="avi":sFor(18,1)=11
sFor(19,0)="mpg":sFor(19,1)=11
sFor(20,0)="ra" :sFor(20,1)=12
sFor(21,0)="ram":sFor(21,1)=12
sFor(22,0)="mid":sFor(22,1)=13
sFor(23,0)="wav":sFor(23,1)=13
sFor(24,0)="mp3":sFor(24,1)=13
sFor(25,0)="asf":sFor(25,1)=11
sFor(26,0)="php":sFor(26,1)=7
sFor(27,0)="php3":sFor(27,1)=7
sFor(28,0)="aspx":sFor(28,1)=7
gFilePath=Request.ServerVariables("SCRIPT_NAME")
gFileName=mid(gFilePath,instrRev(gFilePath,"/")+1)
gFilePath=lcase(left(gFilePath,instrRev(gFilePath,"/")))
gPath=lcase(getVar("path","str",gRootUrl))
if left(gPath,1)<>"/" then gPath=gRootUrl&gPath
gPage=getVar("page","num",1)
gAct=getVar("act","str","")
gFilter=getVar("filter","str","")
setBaseUrl
sub setBaseUrl()
gBaseUrl=gFileName&"?page="&gPage&"&path="&gPath
if gFilter<>"" then gBaseUrl=gBaseUrl&"&filter="&gFilter
end sub
function getVar(theStr,strType,defValue)
select case strType
case "str"
if isEmpty(Request.QueryString(theStr)) or trim(Request.QueryString(theStr))="" then
getVar=defValue
else
getVar=trim(Request.QueryString(theStr))
end if
case "num"
if isEmpty(Request.QueryString(theStr)) or not isNumeric(Request.QueryString(theStr)) then
getVar=defValue
else
getVar=cint(Request.QueryString(theStr))
end if
case else
getStr=defValue
end select
end function
function getForm(theStr,strType,defValue)
select case strType
case "str"
if isEmpty(Request.form(theStr)) or trim(Request.form(theStr))="" then
getForm=defValue
else
getForm=trim(Request.form(theStr))
end if
case "num"
if isEmpty(Request.form(theStr)) or not isNumeric(Request.form(theStr)) then
getForm=defValue
else
getForm=cint(Request.form(theStr))
end if
case else
getForm=defValue
end select
end function
sub End(info,i *** ack,dir)
set fo=nothing
set gFolder=nothing
if info<>"" then Response.Write("<script language=""javascript"">alert('"&info&"')</script>")
select case i *** ack
case 1
Response.Write("<script language=""javascript"">history.back()</script>")
case 2
Response.Write("<script language=""javascript"">location.href='"&dir&"'</script>")
end select
Response.write("</body></>")
Response.End
end sub
function procIsEdit(sName)
dim i1,i,isEdit
isEdit=Array(1,7,8)
procIsEdit=0
i1=procGetFormat(sName)
for i=0 to ubound(isEdit)
if isEdit(i)=i1 then
procIsEdit=1
exit for
end if
next
end function
function procGetExtName(sName)
procGetExtName=""
if instrRev(sName,".")<1 then exit function
procGetExtName=lcase(mid(sName,instrRev(sName,".")+1))
end function
function procGetFormat(sName)
dim i,str
procGetFormat=0
if instrRev(sName,".")=0 then exit function
str=lcase(mid(sName,instrRev(sName,".")+1))
for i=0 to uBound(sFor,1)
if str=sFor(i,0) then
procGetFormat=sFor(i,1)
exit for
end if
next
end function
function procCheckFile(sName,ischeck)
dim sExt,sPath,i,errorchar
errorchar=array("'","""","\","/","*","?","&","|","<",">")
procCheckFile="ok"
sExt=lcase(procGetExtName(sName))
if gFilter<>"" then
if instr(sName,gFilter)<1 then
procCheckFile="没有权限访问此文件!"
exit function
end if
end if
if Session("webeditrun")="0" then
for i=0 to ubound(gNoFile)
if gNoFile(i)=sExt then
procCheckFile="没有权限访问此文件!"
exit function
end if
next
end if
if ischeck>0 then
sPath=left(sName,instrRev(sName,"/"))
sPath=procCheckDir(sPath,1)
if sPath<>"ok" then
procCheckFile=sPath
exit function
end if
if ischeck=1 and not fo.FileExists(Server.MapPath(sName)) then
procCheckFile="文件没有找到!"
exit function
end if
else
for i=0 to ubound(errorchar)
if instr(sName,errorchar(i))>0 then
procCheckFile="文件名中含有非法字符!"
exit function
end if
next
end if
procCheckFile="ok"
end function
function procCheckDir(sPath,mode)
dim errorchar,i,hd,str
sPath=lcase(sPath)
procCheckDir="ok"
errorchar=array("'","""","\","..","","*","?","&","|","<",">")
if isempty(sPath) or trim(sPath)="" then
procCheckDir="目录不能为空!"
exit function
end if
for i=0 to ubound(errorchar)
if instr(sPath,errorchar(i))>0 then
procCheckDir="目录名中含有非法字符"
exit function
end if
next
if gFilePath=left(sPath,len(gFilePath)) then
procCheckDir="没有权限访问此目录!"
exit function
end if
if mode=0 then exit function
if not fo.FolderExists(Server.MapPath(sPath)) then
procCheckDir="目录"&sPath&"没有找到!"
exit function
end if
if left(sPath,len(gRootUrl))<>gRootUrl then
procCheckDir="没有权限访问此目录!"
exit Function
end if
end function
'取文件夹的类型
Function GetFileExt(strFilePath)
GetFileExt=Mid(strFilePath,InstrRev(strFilePath,"."))
End Function
%>
<SCRIPT RUNAT=SERVER LANGUAGE=VBSCRIPT>
'''''''''''''''''''''''''''''''''''''''''''''''''
'
'请保留此信息: 稻香老农制作5xSoft/
'
'''''''''''''''''''''''''''''''''''''''''''''''''
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="数据添加成功!!"
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>
上传表单:
<form action="upload" method="post" enctype="multipart/form-data" name=form1>
上传:<input name=file type=file size="30">
<input type=submit>
</form>
文件upload
<!--#include FILE="upload_5xsoft.inc"-->
<%
formPath="c:\upload\"
set upload=new upload_5xSoft
for each formName in upload.file
set file=upload.file(formName)
if file.FileSize>0 then
response.write "<br>"&file.FilePath&file.FileName&",大小:"&file.FileSize&" =>"&formPath&file.FileName
file.SaveAs Server.mappath(formPath&file.FileName)
end if
next
%>
<! #include FILE="upload inc" >谈如 <% dim upload file formName formPath iCount filename fileExt set upload=new upload_ xSoft 建立上传对象 formPath="uploadimages/" 在目录后启戚加(/) if right(formPath )<>"/" then formPath=formPath&"/" iCount= 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<then response write "<font size= ><br>请先选择你要上传的图片 [ <a href=# onclick=history go( )>重新上传</a>]</font>" response end end if if file filesize>then 含旁启 response write "<font size= ><br>图片大小超过了限制 [ <a href=# onclick=history go( )>重新上传</a>]</font>" response end end if
fileExt=lcase(right(file filename ))
if fileEXT<>" jpg" and fileEXT<>" gif" then response write "<font size= ><br>文件格式只能为jpg和gif格式 [ <a href=# onclick=history go( )>重新上传</a>]</font>" response end end if randomize ranNum=int( *rnd)+ filename=formPath&year(now)&month(now)&day(now)&hour(now)&minute(now)&second(now)&fileExt filename =year(now)&month(now)&day(now)&hour(now)&minute(now)&second(now)&fileExt if file FileSize>then 如果 FileSize >说明有文件数据 file SaveAs Server mappath(filename) 保存文件 response write "<script>parent form img value= "&FileName &" </script>"
iCount=iCount+ end if set file=nothing next set upload=nothing 删除此对象
Response Write "<img src= "&" /UpLoad/UpLoadImages/"&FileName &" onload = DrawImage(this) >" response end %>
下面是upload inc的代码
<SCRIPT RUNAT=SERVER LANGUAGE=VBSCRIPT>dim upfile_ xSoft_Stream Class upload_ xSoft 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 if Request TotalBytes<then Exit Sub set Form=CreateObject("Scripting Dictionary") set File=CreateObject("Scripting Dictionary") set upfile_ xSoft_Stream=CreateObject("Adodb Stream") upfile_ xSoft_Stream mode= upfile_ xSoft_Stream type= upfile_ xSoft_Stream open upfile_ xSoft_Stream write Request BinaryRead(Request TotalBytes) vbEnter=Chr( )&Chr( ) iDivLen=inString( vbEnter)+ strDiv=subString( iDivLen) iFormStart=iDivLen iFormEnd=inString(iformStart strDiv) while iFormStart <iFormEnd iStart=inString(iFormStart "name=""") iEnd=inString(iStart+ """") mFormName=subString(iStart+ iEnd iStart ) iFileNameStart=inString(iEnd+ "filename=""") if iFileNameStart>and iFileNameStart<iFormEnd then iFileNameEnd=inString(iFileNameStart+ """") mFileName=subString(iFileNameStart+ iFileNameEnd iFileNameStart ) iStart=inString(iFileNameEnd+ vbEnter&vbEnter) iEnd=inString(iStart+ vbEnter&strDiv) if iEnd>iStart then mFileSize=iEnd iStart else mFileSize= end if set theFile=new FileInfo theFile FileName=getFileName(mFileName) theFile FilePath=getFilePath(mFileName) theFile FileSize=mFileSize theFile FileStart=iStart+ theFile FormName=FormName file add mFormName theFile else iStart=inString(iEnd+ vbEnter&vbEnter) iEnd=inString(iStart+ vbEnter&strDiv)
if iEnd>iStart then mFormValue=subString(iStart+ iEnd iStart ) else mFormValue="" end if form Add mFormName mFormValue end if
iFormStart=iformEnd+iDivLen iFormEnd=inString(iformStart strDiv) wend End Sub
Private Function subString(theStart theLen) dim i c stemp upfile_ xSoft_Stream Position=theStart stemp="" for i= to theLen if upfile_ xSoft_Stream EOS then Exit for c=ascB(upfile_ xSoft_Stream Read( )) If c >Then if upfile_ xSoft_Stream EOS then Exit for stemp=stemp&Chr(AscW(ChrB(AscB(upfile_ xSoft_Stream Read( )))&ChrB(c))) i=i+ else stemp=stemp&Chr(c) End If Next subString=stemp End function
Private Function inString(theStart varStr) dim i j bt theLen str InString= Str=toByte(varStr) theLen=LenB(Str) for i=theStart to upfile_ xSoft_Stream Size theLen if i>upfile_ xSoft_Stream size then exit Function upfile_ xSoft_Stream Position=i if AscB(upfile_ xSoft_Stream Read( ))=AscB(midB(Str )) then InString=i for j= to theLen if upfile_ xSoft_Stream EOS then inString= Exit for end if if AscB(upfile_ xSoft_Stream Read( ))<>AscB(MidB(Str j )) then InString= Exit For end if next if InString<>then Exit Function end if next End Function
Private Sub Class_Terminate form RemoveAll file RemoveAll set form=nothing set file=nothing upfile_ xSoft_Stream close set upfile_ xSoft_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 "")+ ) Else GetFileName = "" End If End function
Private function toByte(Str) dim i iCode c iLow iHigh toByte="" For i= To Len(Str) c=mid(Str i ) iCode =Asc(c) If iCode<Then iCode = iCode + If iCode>Then iLow = Left(Hex(Asc(c)) ) iHigh =Right(Hex(Asc(c)) ) toByte = toByte &chrB("&H"&iLow) &chrB("&H"&iHigh) Else toByte = toByte &chrB(AscB(c)) End If Next End function End Class
lishixinzhi/Article/program/net/201311/14198
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