图像图表
如何把图片上传到数据库中并显示出来？
upload.htm
' 上传页面.
<html>
<body>
<p align="center">千花飞舞之图片上传</p>
<center>
<form name="mainform" enctype="multipart/form-data"
' 这个form属性是得到上传的数据的关键.
action="process.asp" method=post>
<input type=file name=mefile><br>
<input type=submit name=ok value="上传">
</form>
</center>
</body></html>
process.asp
' 处理浏览器中送来的数据.
<%
response.buffer=true
formsize=request.totalbytes
formdata=request.binaryread(formsize)
bncrlf=chrb(13) & chrb(10)
divider=leftb(formdata,clng(instrb(formdata,bncrlf))-1)
datastart=instrb(formdata,bncrlf & bncrlf)+4
dataend=instrb(datastart+1,formdata,divider)-datastart
mydata=midb(formdata,datastart,dataend)
set conngraph=server.createobject("adodb.connection")
conngraph.connectionstring="driver={microsoft access driver (*.mdb)};
dbq=" & server.mappath("images.mdb") & ";uid=;pwd=;"
conngraph.open
set rec=server.createobject("adodb.recordset")
rec.open "select * from [images] where id is null",conngraph,1,3
rec.addnew
rec("img").appendchunk mydata
rec.update
rec.close
set rec=nothing
set conngraph=nothing
%>
showimg.asp
' 显示图片.
<%
set conngraph=server.createobject("adodb.connection")
conngraph.connectionstring="driver={microsoft access driver (*.mdb)};
dbq=" & server.mappath("images.mdb") & ";uid=;pwd=;"
conngraph.open
set rec=server.createobject("adodb.recordset")
strsql="select img from images where id=" & trim(request("id"))
rec.open strsql,conngraph,1,1
response.contenttype = "image/*"
response.binarywrite rec("img").getchunk(7500000)
rec.close
set rec=nothing
set conngraph=nothing
%>
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