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ASP无组件上载,带进度条,多文件上载
来源:动态网站制作指南 更新时间:2009/5/16 11:27:51 阅读次数:
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Example.asp

<%@LANGUAGE="VBSCRIPT" CODEPAGE="65001"%>
<!--#include file="SundyUpload.asp"-->
<%
'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") & "<BR><BR>")'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)
        If fileSize > 0 Then
            Response.Write("File Size:" & fileSize & "<BR>")
            Response.Write("File Name:" & objFile.FilePath  & "<BR>")
           ' Response.Write("File Description:" & objUpload.Form("fileDesc" & counter) & "<BR><BR>")
           objFile.SaveAs Server.MapPath(".") & "\upload\" & fileName
   Response.Write "Save at: "&Server.MapPath(".") & "\upload\" & fileName & "<br><br>"
        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"
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Sundy Upload Progress Bar Example</title>
<script language="javascript">
function chkFrm(){
  var objFrm = document.frmUpload;
    if (objFrm.file1.value=="" && objFrm.file2.value==""){
      alert("请选择一个文件");
        objFrm.file1.focus();
        return false;
    }
    objFrm.action = "Example.asp?opt=Upload&xmlPath=<%=xmlPath%>";
    startProgress('<%=xmlPath%>');//启动进度条
    return true;
}
</script>
</head>

<body>
<form name="frmUpload" method="post" action="Example.asp" enctype="multipart/form-data" onSubmit="return chkFrm()">
普通表单:<BR><input type="text" name="normalForm" size="40"><BR><BR>
文件1:<BR>
<input type="file" name="file1" size="40"></br>
<input type="text" name="fileDesc1" size="30"><BR><BR>
文件2:<BR>
<input type="file" name="file2" size="40"></br>
<input type="text" name="fileDesc2" size="30"><BR>
文件3:<BR>
<input type="file" name="file3" size="40"></br>
文件4:<BR>
<input type="file" name="file4" size="40"></br>
文件5:<BR>
<input type="file" name="file5" size="40"></br>
<input type="submit" name="btnSubmit" value="submit"/>
</form>
</body>
</html>

SundyUpload.asp

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<%
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

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