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| 当前位置： 电脑软硬件应用网 > 设计学院 > 网络编程 > ASP教程 > 正文 |
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| 文件上传实例：ASP使用无组件实现上传详细代码 | |||
| 2010-2-10 9:10:05 文/网络收集 出处:电脑软硬件应用网 | |||
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尽管目前PHP很流行，ASP.NET也流行，但是在使用比较落后的语言ASP的朋友也有不少朋友，也有些朋友是刚入门的，下面就讲一下ASP使用无组件实现文件上传的例子。 第一、HTML 表单(upload.html) <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>asp 无组件上传</title> </head> <body> 请选择要上传的文件 <form action="upfile.asp" method="post" enctype="multipart/form-data" name="form1"> <input type="file" name="file"> <!--<br> <input type="file" name="file"> <br> <input type="file" name="file"> <br>--> <input type="submit" name="Submit" value="提交"> </form> </body> </html> 第二、无组件库文件(upload.inc.asp) <% Dim oUpFileStream Class UpFile_Class Dim Form,File,Version,Err Private Sub Class_Initialize Version = "无组件上传类 Version V1.0" Err = -1 End Sub Private Sub Class_Terminate '清除变量及对像 If Err < 0 Then Form.RemoveAll Set Form = Nothing File.RemoveAll Set File = Nothing oUpFileStream.Close Set oUpFileStream = Nothing End If End Sub Public Sub GetData (RetSize) '定义变量 Dim RequestBinDate,sSpace,bCrLf,sInfo,iInfoStart,iInfoEnd,tStream,iStart,oFileInfo Dim iFileSize,sFilePath,sFileType,sFormValue,sFileName Dim iFindStart,iFindEnd Dim iFormStart,iFormEnd,sFormName '代码开始 If Request.TotalBytes < 1 Then Err = 1 Exit Sub End If If RetSize > 0 Then If Request.TotalBytes > RetSize Then Err = 2 Exit Sub End If End If Set Form = Server.CreateObject ("Scripting.Dictionary") Form.CompareMode = 1 Set File = Server.CreateObject ("Scripting.Dictionary") File.CompareMode = 1 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) oUpFileStream.Position = 0 RequestBinDate = oUpFileStream.Read iFormEnd = oUpFileStream.Size bCrLf = ChrB (13) & ChrB (10) '取得每个项目之间的分隔符 sSpace = MidB (RequestBinDate,1, InStrB (1,RequestBinDate,bCrLf)-1) iStart = LenB (sSpace) iFormStart = iStart 2 '分解项目 Do 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,sSpace)-1 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_Class '取得文件属性 iFindStart = InStr (iFindEnd,sInfo,"filename=""",1) 10 iFindEnd = InStr (iFindStart,sInfo,"""",1) sFileName = Mid (sinfo,iFindStart,iFindEnd-iFindStart) oFileInfo.FileName = Mid (sFileName,InStrRev (sFileName, "\") 1) oFileInfo.FilePath = Left (sFileName,InStrRev (sFileName, "\") 1) oFileInfo.FileExt = Mid (sFileName,InStrRev (sFileName, ".") 1) 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 -2 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-2 tStream.Position = 0 tStream.Type = 2 tStream.CharSet = "gb2312" sFormValue = tStream.ReadText If Form.Exists (sFormName) Then Form (sFormName) = Form (sFormName) & ", " & sFormValue else form.Add sFormName,sFormValue End If End If tStream.Close iFormStart = iFormStart iStart 2 '如果到文件尾了就退出 Loop Until (iFormStart 2) = iFormEnd RequestBinDate = "" Set tStream = Nothing End Sub End Class '文件属性类 Class FileInfo_Class Dim FormName,FileName,FilePath,FileSize,FileType,FileStart,FileExt '保存文件方法 Public Function SaveToFile (Path) On Error Resume Next Dim oFileStream Set oFileStream = CreateObject ("ADODB.Stream") oFileStream.Type = 1 oFileStream.Mode = 3 oFileStream.Open oUpFileStream.Position = FileStart oUpFileStream.CopyTo oFileStream,FileSize oFileStream.SaveToFile Path,2 oFileStream.Close Set oFileStream = Nothing if Err.Number<>0 then SaveToFile=err.number&"**"&Err.descripton else SaveToFile="ok" end if End Function '取得文件数据 Public Function FileDate oUpFileStream.Position = FileStart FileDate = oUpFileStream.Read (FileSize) End Function End Class %> 第二、无组件库文件(upload.inc.asp)
<!--#include file="upload.inc.asp"--> <html> <head> <title>文件上传</title> </head> <body topmargin="0" leftmargin="0"> <table width=100% border=0 cellspacing="0" cellpadding="0"><tr><td class=tablebody1 width=100% height=100% > <% dim upload,file,formName,formPath,filename,fileExt dim ranNum call UpFile() '===========无组件上传(upload_0)==================== sub UpFile() set upload=new UpFile_Class '建立上传对象 upload.GetData (500*1024) '取得上传数据,此处即为500 K if upload.err > 0 then select case upload.err case 1 Response.Write "请先选择你要上传的文件 [ <a href=# onclick=history.go(-1)>重新上传</a> ]" case 2 Response.Write "图片大小超过了限制 500 K [ <a href=# onclick=history.go(-1)>重新上传</a> ]" end select exit sub else formPath=upload.form("filepath") '文件保存目录,此目录必须为程序可读写 if formPath="" then formPath="rwdata/" end if '在目录后加(/) if right(formPath,1)<>"/" then formPath=formPath&"/" end if 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 "请先选择你要上传的图片 [ <a href=# onclick=history.go(-1)>重新上传</a> ]" response.end end if fileExt=lcase(file.FileExt) if CheckFileExt(fileEXT)=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 result=file.SaveToFile(Server.mappath(filename)) '保存文件 if result="ok" then response.write formName&" upload OK, had saved to "&filename&"<br>" else response.write formName&" upload Fail,"&result&"<br>" end if end if set file=nothing next set upload=nothing end if end sub '判断文件类型是否合格 Private Function CheckFileExt (fileEXT) dim Forumupload Forumupload="gif,jpg,bmp,jpeg" Forumupload=split(Forumupload,",") for i=0 to ubound(Forumupload) if lcase(fileEXT)=lcase(trim(Forumupload(i))) then CheckFileExt=true exit Function else CheckFileExt=false end if next End Function %> </td></tr></table> </body> </html> 就这么简单就实现了文件上传。 |
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