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编程中15个非常有用的例子 (二)
ASP与JSP的比较(一)
ASP与JSP的比较(二)
ASP中五种连接数据库的方法
从ASP调用SQL中的图像
用排序串字段实现树状结构(例程:连接字串)
用排序串字段实现树状结构(例程:删除贴子)
用排序串字段实现树状结构(例程:回复表单)
用排序串字段实现树状结构(例程:显示贴子内容)
用排序串字段实现树状结构(例程:显示树)
用排序串字段实现树状结构(存储过程)
用排序串字段实现树状结构(库结构)
用排序串字段实现树状结构(原理)
remote script文档(转载自微软)(一)
remote script文档(转载自微软)(二)
remote script文档(转载自微软)(三)
remote script文档(转载自微软)(四)
remote script文档(转载自微软)(五)
remote script文档(转载自微软)(六)
remote script文档(转载自微软)(七)

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: 233 ::
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