当前位置: 首页 > 图文教程 > 网络编程 > ASP > 如何用SAFileUp上传文件?

ASP
ASP优化:几招提高ASP性能的最佳选择
ASP进阶:用ASP制作统计饼图、柱状图等
ASP应用进阶 ASP Error对象的相关知识
ASP常见数学函数 Abs Atn Cos 等详解
ASP优化 用数据绑定实现高效率动态网页
用着放心 为你的ASP程序作一个负载测试
ASP+Access的安全隐患以及解决方法
ASP中将视频文件转换成.flv格式
经典!5分钟编写一个ASP论坛
ASP实现小偷程序原理和简单示例
用ASP木马实现FTP和解压缩
如何用ASP编写网站统计系统
response.write与之间的区别
asp操作excel文件的函数
如何有效提高asp页面的访问速度
JS+ASP打造无刷新新闻列表
使用VB将ASP代码封装生成DLL文件
用ASP打造一个小型的网页BBS系统
ASP网站的漏洞分解以及入侵防范方法
破解网站发布系统 ASP生成静态页面方法

ASP 中的 如何用SAFileUp上传文件?


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-11-03   浏览: 164 ::
收藏到网摘: n/a

  How Do I Upload Files to the database with SAFileUp?  
Don't do it! Use SAFileUp to upload the files to the server but do not store the image in the database. Instead store the path to the file. Better yet if the images will sit in the same folder just store the actual file name. Uploading the entire image to the database wastes too many resources. You need to upload the image in binary format which is slow. You also waste all that extra database space to store the image. Then you lose speed retrieving it.

These are the requirements for uploading files with SAFileup.
1] You need SAFileUp installed on the server. 2] You need Read, Write, and Change permissions on the directory you are going to save the pictures to. In my example I named the folder "Mypictures". Contact your ISP to set this up for you.
This is the web form - upload.asp. Notice the multipart/form-data. We are not just uploading text here. We are pulling files from the hard drive. Special rules and instructions apply. INPUT TYPE="file" gives us the browser button on the screen which lets us access the hard drive.
<TABLE><TR>
<TD valign='top'>
Category
</TD>
<TD>
<form enctype="multipart/form-data" method="post"  action="upload2.asp">
<INPUT TYPE="text"  NAME="categoryname">
</TD>
</TR>
<TR><TD align="right">
Alternate Text for banner:</TD>
<TD><INPUT TYPE="text"  NAME="alt">
</TD></TR>
<TR><TD align="right">
URL:  http:// </TD><TD><INPUT TYPE="text"  NAME="url">
</TD></TR>
<TR><TD align="right">
Get Add:</TD><TD><input type="file" name="f1"><br>
</TD></TR></TABLE>      
<BR><BR>
      <input type="submit"  NAME="submit"  value="submit">
</form>




The FORM Processing script - upload2.asp. Notice the upl.form("FORM_NAME"). you cannot use request.form to
retrieve form data when uploading files. You must reference the form elements with the File Upload object.
In this example it is "upl". <%
'You must have SAFileUp installed on the server
      Set upl = Server.CreateObject("SoftArtisans.FileUp")

      categoryname = trim(replace(upl.form("categoryname"),"'",""))
      alt = trim(replace(upl.form("alt"),"'",""))
      url = trim(replace(upl.form("url"),"'",""))

if categoryname = "" then
      response.write "You Must Enter a category name"
      response.end
End IF

NewFileName = Mid(upl.UserFilename, InstrRev(upl.UserFilename, "\") + 1)

'Rename file if file name already exists
      upl.CreateNewFile = true

'Do not overwrite existing files
'The folder the pictures will be saved in need Read, Write
'and Change permissions.  In this example it is "MyPictures"
      upl.SaveAs "D:\MyWebs\MyPictures\" & NewFileName

'Make sure we have the http:// extension
'remove it if it was already entered then re-add it
      path = NewFileName
      url = replace(url,"http://","")
      url = CStr("http://&quo