asp将本地的文件上传到服务器_ASP.NET教程

今天我们讲解如何利用asp的上传功能将本地的文件上传到服务器上。
最简系统包括下面三个文件：

upload.htm                        --上传口文件，选择本地文件
uploadimg.asp                 --上传程序控制文件
upload_5xsoft.inc            --无组件上传类，此文件初学者不用学习，只要会用就可以了

upload.htm内容————上传口文件，选择本地文件

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									<html>

									<head>

									</head>

									<body>

									<table width="80%" border="0" align="center">

									<form name="form1" method="post" action="uploadimg.asp" enctype="multipart/form-data">

									<tr>

									  <td align="center"><input name="upfile" type="file" id="upfile"></td>

									 </tr>

									   <tr>

									  <td align="center"><input type="submit" name="Submit" value="上传图片"></td>

									 </tr>

									 </form>

									</table>

									</body>

									</html>

uploadimg.asp内容————上传程序控制文件

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									<!--#include FILE="upload_5xsoft.inc"-->

									<%

									dim upload,file,filepath

									filepath="UPLOAD/"

									set upload=new upload_5xSoft ''建立上传对象

									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>0 then     ''如果 FileSize > 0 说明有文件数据

									 fname = file.filename

									 file.SaveAs Server.mappath(filepath&fname)  ''保存文件

									 end if

									set file=nothing

									next

									set upload=nothing ''删除此对象

upload_5xsoft.inc内容————此文件内容不属于本演练程序内容，本演练应用此类的方法

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									<SCRIPT RUNAT=SERVER LANGUAGE=VBSCRIPT>

									dim oUpFileStream

									Class upload_5xSoft

									dim Form,File,Version

									Private Sub Class_Initialize 

									dim RequestBinDate,sStart,bCrLf,sInfo,iInfoStart,iInfoEnd,tStream,iStart,oFileInfo

									dim iFileSize,sFilePath,sFileType,sFormvalue,sFileName

									dim iFindStart,iFindEnd

									dim iFormStart,iFormEnd,sFormName

									Version="无组件上传类 Version 0.93"

									set Form=Server.CreateObject("Scripting.Dictionary")

									set File=Server.CreateObject("Scripting.Dictionary")

									if Request.TotalBytes<1 then Exit Sub

									set tStream = Server.CreateObject("adodb.stream")

									set oUpFileStream = Server.CreateObject("adodb.stream")

									oUpFileStream.Type = 1

									oUpFileStream.Mode =3

									oUpFileStream.Open

									oUpFileStream.Write Request.BinaryRead(Request.TotalBytes)

									Response.Write "<font size=""2"">页面执行时间："&FormatNumber((Timer() -time1)*1000,3)&"毫秒</font><br>"

									oUpFileStream.Position=0

									RequestBinDate =oUpFileStream.Read 

									iFormStart = 1

									iFormEnd = LenB(RequestBinDate)

									bCrLf = chrB(13) & chrB(10)

									sStart = MidB(RequestBinDate,1, InStrB(iFormStart,RequestBinDate,bCrLf)-1)

									iStart = LenB (sStart)

									iFormStart=iFormStart+iStart+1

									while (iFormStart + 10) < iFormEnd 

									 iInfoEnd = InStrB(iFormStart,RequestBinDate,bCrLf & bCrLf)+3

									 tStream.Type = 1

									 tStream.Mode =3

									 tStream.Open

									 oUpFileStream.Position = iFormStart

									 oUpFileStream.CopyTo tStream,iInfoEnd-iFormStart

									 tStream.Position = 0

									 tStream.Type = 2

									 tStream.Charset ="gb2312"

									 sInfo = tStream.ReadText   

									 '取得表单项目名称

									 iFormStart = InStrB(iInfoEnd,RequestBinDate,sStart)

									 iFindStart = InStr(22,sInfo,"name=""",1)+6

									 iFindEnd = InStr(iFindStart,sInfo,"""",1)

									 sFormName = Mid (sinfo,iFindStart,iFindEnd-iFindStart)

									 '如果是文件

									 if InStr (45,sInfo,"filename=""",1) > 0 then

									 set oFileInfo=new FileInfo

									 '取得文件名

									 iFindStart = InStr(iFindEnd,sInfo,"filename=""",1)+10

									 iFindEnd = InStr(iFindStart,sInfo,"""",1)

									 sFileName = Mid (sinfo,iFindStart,iFindEnd-iFindStart)

									 oFileInfo.FileName=getFileName(sFileName)

									 oFileInfo.FilePath=getFilePath(sFileName)

									 '取得文件类型

									 iFindStart = InStr(iFindEnd,sInfo,"Content-Type: ",1)+14

									 iFindEnd = InStr(iFindStart,sInfo,vbCr)

									 oFileInfo.FileType =Mid (sinfo,iFindStart,iFindEnd-iFindStart)

									 oFileInfo.FileStart =iInfoEnd

									 oFileInfo.FileSize = iFormStart -iInfoEnd -3

									 oFileInfo.FormName=sFormName

									 file.add sFormName,oFileInfo

									 else

									 '如果是表单项目

									 tStream.Close

									 tStream.Type =1

									 tStream.Mode =3

									 tStream.Open

									 oUpFileStream.Position = iInfoEnd 

									 oUpFileStream.CopyTo tStream,iFormStart-iInfoEnd-3

									 tStream.Position = 0

									 tStream.Type = 2

									 tStream.Charset ="gb2312"

									 sFormvalue = tStream.ReadText 

									 form.Add sFormName,sFormvalue

									 end if

									 tStream.Close

									 iFormStart=iFormStart+iStart+1

									 wend

									RequestBinDate=""

									set tStream =nothing

									End Sub

									Private Sub Class_Terminate 

									if not Request.TotalBytes<1 then

									 form.RemoveAll

									 file.RemoveAll

									 set form=nothing

									 set file=nothing

									 oUpFileStream.Close

									 set oUpFileStream =nothing

									 end if

									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

									End Class

									Class FileInfo

									 dim FormName,FileName,FilePath,FileSize,FileType,FileStart

									 Private Sub Class_Initialize 

									  FileName = ""

									  FilePath = ""

									  FileSize = 0

									  FileStart= 0

									  FormName = ""

									  FileType = ""

									 End Sub

									 Public function SaveAs(FullPath)

									  dim oFileStream,ErrorChar,i

									  SaveAs=1

									  if trim(fullpath)="" or right(fullpath,1)="/" then exit function

									  set oFileStream=CreateObject("Adodb.Stream")

									  oFileStream.Type=1

									  oFileStream.Mode=3

									  oFileStream.Open

									  oUpFileStream.position=FileStart

									  oUpFileStream.copyto oFileStream,FileSize

									  oFileStream.SaveToFile FullPath,2

									  oFileStream.Close

									  set oFileStream=nothing 

									  SaveAs=0

									 end function

									End Class

									</SCRIPT>