asp 带进度条的上传文件代码与实例

<%
Dim SundyUpload_SourceData
Class SundyUpload
  Dim objForm,objFile,Version,objProgress
    Dim xmlPath,CharsetEncoding
  Public Function Form(strForm)
    strForm=lcase(strForm)
    If NOT objForm.exists(strForm) Then
      Form=""
    Else
      Form=objForm(strForm)
    End If
  End Function

  Public Function File(strFile)
    strFile=lcase(strFile)
    If NOT objFile.exists(strFile) Then
      Set File=new FileInfo
    Else
      Set File=objFile(strFile)
    End If
  End Function
 
    Public Sub UploadInit(progressXmlPath,charset)
    Dim RequestData,sStart,Crlf,sInfo,iInfoStart,iInfoEnd,tStream,iStart,theFile
        Dim iFileSize,sFilePath,sFileType,sFormValue,sFileName
        Dim iFindStart,iFindEnd
        Dim iFormStart,iFormEnd,sFormName
     
        Version="Upload Width Progress Bar Version 1.0"
        Set objForm=Server.CreateObject("Scripting.Dictionary")
        Set objFile=Server.CreateObject("Scripting.Dictionary")
        If Request.TotalBytes<1 Then Exit Sub
        Set tStream = Server.CreateObject("adodb.stream")
        Set SundyUpload_SourceData = Server.CreateObject("adodb.stream")
        SundyUpload_SourceData.Type = 1
        SundyUpload_SourceData.Mode =3
        SundyUpload_SourceData.Open
       
        Dim TotalBytes
        Dim ChunkReadSize
        Dim DataPart, PartSize
        Dim objProgress
       
        TotalBytes = Request.TotalBytes     ' 总大小
        ChunkReadSize = 64 * 1024    ' 分块大小64K
        BytesRead = 0
        xmlPath = progressXmlPath
        CharsetEncoding = charset
        If CharsetEncoding = "" Then
          CharsetEncoding = "utf-8"
        End If
        Set objProgress = New Progress
        objProgress.ProgressInit(xmlPath)
        objProgress.UpdateProgress Totalbytes,0
        '循环分块读取
        Do While BytesRead < TotalBytes
            '分块读取
            PartSize = ChunkReadSize
            If PartSize + BytesRead > TotalBytes Then PartSize = TotalBytes - BytesRead
            DataPart = Request.BinaryRead(PartSize)
            BytesRead = BytesRead + PartSize
   
            SundyUpload_SourceData.Write DataPart
           
            objProgress.UpdateProgress Totalbytes,BytesRead
        Loop
        'SundyUpload_SourceData.Write  Request.BinaryRead(Request.TotalBytes)
        SundyUpload_SourceData.Position=0
        RequestData =SundyUpload_SourceData.Read
   
        iFormStart = 1
        iFormEnd = LenB(RequestData)
        Crlf = chrB(13) & chrB(10)
        sStart = MidB(RequestData,1, InStrB(iFormStart,RequestData,Crlf)-1)
        iStart = LenB (sStart)
        iFormStart=iFormStart+iStart+1
        While (iFormStart + 10) < iFormEnd
            iInfoEnd = InStrB(iFormStart,RequestData,Crlf & Crlf)+3
            tStream.Type = 1
            tStream.Mode =3
            tStream.Open
            SundyUpload_SourceData.Position = iFormStart
            SundyUpload_SourceData.CopyTo tStream,iInfoEnd-iFormStart
            tStream.Position = 0
            tStream.Type = 2
            tStream.Charset =CharsetEncoding
            sInfo = tStream.ReadText
            tStream.Close
            '取得表单项目名称
            iFormStart = InStrB(iInfoEnd,RequestData,sStart)
            iFindStart = InStr(22,sInfo,"name=""",1)+6
            iFindEnd = InStr(iFindStart,sInfo,"""",1)
            sFormName = lcase(Mid (sinfo,iFindStart,iFindEnd-iFindStart))
            '如果是文件
            If InStr (45,sInfo,"filename=""",1) > 0 Then
                Set theFile=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)
                theFile.FileName=getFileName(sFileName)
                theFile.FilePath=getFilePath(sFileName)
                '取得文件类型
                iFindStart = InStr(iFindEnd,sInfo,"Content-Type: ",1)+14
                iFindEnd = InStr(iFindStart,sInfo,vbCr)
                theFile.FileType =Mid (sinfo,iFindStart,iFindEnd-iFindStart)
                theFile.FileStart =iInfoEnd
                theFile.FileSize = iFormStart -iInfoEnd -3
                theFile.FormName=sFormName
                If NOT objFile.Exists(sFormName) Then
                    objFile.add sFormName,theFile
                End If
            Else
                '如果是表单项目
                tStream.Type =1
                tStream.Mode =3
                tStream.Open
                SundyUpload_SourceData.Position = iInfoEnd
                SundyUpload_SourceData.CopyTo tStream,iFormStart-iInfoEnd-3
                tStream.Position = 0
                tStream.Type = 2
                tStream.Charset = CharsetEncoding
                sFormValue = tStream.ReadText
                tStream.Close
                If objForm.Exists(sFormName) Then
                    objForm(sFormName)=objForm(sFormName)&", "&sFormValue         
                Else
                    objForm.Add sFormName,sFormValue
                End If
            End If
            iFormStart=iFormStart+iStart+1
        Wend
        RequestData=""
        Set tStream = Nothing     
    End Sub
    Private Sub Class_Initialize
       
    End Sub
   
    Private Sub Class_Terminate 
      If Request.TotalBytes>0 Then
            objForm.RemoveAll
            objFile.RemoveAll
            Set objForm=Nothing
            Set objFile=Nothing
            SundyUpload_SourceData.Close
            Set SundyUpload_SourceData = Nothing
      End If
        Set objProgress = Nothing
        Set objFso = Server.CreateObject("Scripting.FileSystemObject")
        If objFso.FileExists(xmlPath) Then
          objFso.DeleteFile(xmlPath)
        End If
        Set objFso = 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
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 dr,ErrorChar,i
        SaveAs=True
  'Response.Write fullpath & ".....................
"
  'FileName="ss.txt"
        If trim(fullpath)="" or FileStart=0 or fileName="" or right(fullpath,1)="/" Then Exit Function
  'Response.Write "2........................
"
        Set dr=CreateObject("Adodb.Stream")
        dr.Mode=3
        dr.Type=1
        dr.Open
        SundyUpload_SourceData.position=FileStart
        SundyUpload_SourceData.copyto dr,FileSize
        dr.SaveToFile FullPath,2
        dr.Close
        Set dr=Nothing
        SaveAs=False
    End Function
End Class

Class Progress
  Dim objDom,xmlPath
    Dim startTime
  Private Sub Class_Initialize

    End Sub
   
    Public Sub ProgressInit(xmlPathTmp)
      Dim objRoot,objChild
        Dim objPI

        xmlPath = xmlPathTmp
        Set objDom = Server.CreateObject("Microsoft.XMLDOM")
        Set objRoot = objDom.createElement("progress")
        objDom.appendChild objRoot
       
        Set objChild = objDom.createElement("totalbytes")
        objChild.Text = "0"
        objRoot.appendChild objChild
        Set objChild = objDom.createElement("uploadbytes")
        objChild.Text = "0"
        objRoot.appendChild objChild
        Set objChild = objDom.createElement("uploadpercent")
        objChild.Text = "0%"
        objRoot.appendChild objChild
        Set objChild = objDom.createElement("uploadspeed")
        objChild.Text = "0"
        objRoot.appendChild objChild
        Set objChild = objDom.createElement("totaltime")
        objChild.Text = "00:00:00"
        objRoot.appendChild objChild
        Set objChild = objDom.createElement("lefttime")
        objChild.Text = "00:00:00"
        objRoot.appendChild objChild
       
        Set objPI = objDom.createProcessingInstruction("xml","version='1.0' encoding='utf-8'")
        objDom.insertBefore objPI, objDom.childNodes(0)
        objDom.Save xmlPath
        Set objPI = Nothing
        Set objChild = Nothing
        Set objRoot = Nothing
        Set objDom = Nothing
    End Sub
   
    Sub UpdateProgress(tBytes,rBytes)
      Dim eTime,currentTime,speed,totalTime,leftTime,percent
        If rBytes = 0 Then
            startTime = Timer
            Set objDom = Server.CreateObject("Microsoft.XMLDOM")
            objDom.load(xmlPath)
            objDom.selectsinglenode("//totalbytes").text=tBytes
            objDom.save(xmlPath)
        Else
          speed = 0.0001
          currentTime = Timer
        eTime = currentTime - startTime
            If eTime>0 Then speed = rBytes / eTime
            totalTime = tBytes / speed
            leftTime = (tBytes - rBytes) / speed
            percent = Round(rBytes *100 / tBytes)
            'objDom.selectsinglenode("//uploadbytes").text = rBytes
            'objDom.selectsinglenode("//uploadspeed").text = speed
            'objDom.selectsinglenode("//totaltime").text = totalTime
            'objDom.selectsinglenode("//lefttime").text = leftTime
            objDom.selectsinglenode("//uploadbytes").text = FormatFileSize(rBytes) & " / " & FormatFileSize(tBytes)
            objDom.selectsinglenode("//uploadpercent").text = percent
            objDom.selectsinglenode("//uploadspeed").text = FormatFileSize(speed) & "/sec"
            objDom.selectsinglenode("//totaltime").text = SecToTime(totalTime)
            objDom.selectsinglenode("//lefttime").text = SecToTime(leftTime)
            objDom.save(xmlPath)       
        End If
    End Sub

    private Function SecToTime(sec)
        Dim h:h = "0"
        Dim m:m = "0"
        Dim s:s = "0"
        h = round(sec / 3600)
        m = round( (sec mod 3600) / 60)
        s = round(sec mod 60)
        If LEN(h)=1 Then h = "0" & h
        If LEN(m)=1 Then m = "0" & m
        If LEN(s)=1 Then s = "0" & s
        SecToTime = (h & ":" & m & ":" & s)
    End Function
       
    private Function FormatFileSize(fsize)
        Dim radio,k,m,g,unitTMP
        k = 1024
        m = 1024*1024
        g = 1024*1024*1024
        radio = 1
        If Fix(fsize / g) > 0.0 Then
            unitTMP = "GB"
            radio = g
        ElseIf Fix(fsize / m) > 0 Then
            unitTMP = "MB"
            radio = m
        ElseIf Fix(fsize / k) > 0 Then
            unitTMP = "KB"
            radio = k
        Else
            unitTMP = "B"
            radio = 1
        End If
        If radio = 1 Then
            FormatFileSize = fsize & " " & unitTMP
        Else
            FormatFileSize = FormatNumber(fsize/radio,3) & unitTMP
        End If
    End Function

    Private Sub Class_Terminate 
      Set objDom = Nothing
    End Sub
End Class
%>

<%@LANGUAGE="VBSCRIPT" CODEPAGE="65001"%>

<%
'此例子文档编码都是UTF-8,如果是其他编码的系统，请将编码转换为相应的编码，不然表单获取数据可能会乱码
Dim objUpload,opt
Dim xmlPath
Dim fileFormName,objFile,counter
opt = request.QueryString("opt")
If opt = "Upload" Then
  xmlPath = Server.MapPath(request.QueryString("xmlPath"))'将虚拟路径转换为实际路径
    Set objUpload=new SundyUpload '建立上传对象
    objUpload.UploadInit xmlPath,"utf-8"
    counter = 1
    Response.Write("普通表单：" & objUpload.Form("normalForm") & "

")'获取表单数据
    For Each fileFormName In objUpload.objFile
      Set objFile=objUpload.objFile(fileFormName)
        fileSize = objFile.FileSize
  strTemp= objFile.FilePath
  Response.Write strTemp
  fileName = mid(strTemp,InStrRev(strTemp, "")+1)
  'g0=
  f0=replace(replace(replace(now(),":","")," ",""),"-","")&"."&g0
   
        If fileSize > 0 Then
            Response.Write("File Size:" & fileSize & "
")
            Response.Write("File Name:" & objFile.FilePath  & "
")

   t=Split(filename,".")
   t1=t(1)  
   filename=Replace(Replace(Replace(now,":","")," ",""),"-","")&"."&t1
   
           ' Response.Write("File Description:" & objUpload.Form("fileDesc" & counter) & "

")
           objFile.SaveAs Server.MapPath(".") & "upload" & fileName
   Response.Write "Save at: "&Server.MapPath(".") & "upload" & fileName & "

"
        End If
        counter = counter + 1
    Next
   
End If
'为上载进度条数据文件（XML文件指定虚拟路径）
'最好是随机的，因为可能多个人同时上载，需要不同的进度数据
'这个路径需要在提交的时候传入上载组件中，以便在上载过程中更改进度数据
'客户端使用Javascript来读取此XML文件，显示进度
xmlPath = "upload/" & Timer & ".xml"
%>