如何获取图片的宽度属性（从数据库读取文件名调用文件夹下的图片）
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由于上传图片时没有获取它的宽度，现在要用到，请问有什么好办法可以解决？
图片文件名已大量存在于数据库里，实际图片文件在站点文件夹中。
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关注
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<img src="image/index.jpg" onload="javascript:if(this.width>500) this.width=500;">
上面的已经可以起到宽高都按比例缩小，不过你也可自己进行设定：
<img src="image/index.jpg" onload="javascript:if(this.width>500){this.height*=500/this.width;this.width=500;}">
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楼上正解
up
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或者你先显示，用settimeout函数检测图片大?gt;>２还詈没故窃谛词菘獾氖焙蛴胻his.width和this.height判断，大的不能写进去。还一种方法，给用户一个后台直接编辑的窗口，类似新闻发布系统那样
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<html>
<head>
<meta http-equiv=Content-Type content=text/html; charset=gb2312>
<meta name=GENERATOR content=Microsoft FrontPage 4.0>
<meta name=ProgId content=FrontPage.Editor.Document>
<title>test</title>
</head>
<body>
<script language=javascript type=text/javascript>
<!--
var imgObj;
function checkImg(theURL,winName){
// 对象是否已创建
if (typeof(imgObj) == object){
// 是否已取得了图像的高度和宽度
if ((imgObj.width != 0) && (imgObj.height != 0))
// 根据取得的图像叨群涂矶壬柚玫龃翱诘母叨扔肟矶龋⒋蚩么翱?BR> // 其中的增量 20 和 30 是设置的窗口边框与图片间的间隔量
OpenFullSizeWindow(theURL,winName, ,width= + (imgObj.width+20) + ,height= + (imgObj.height+30));
else
// 因为通过 Image 对象动态装载图片，不可能立即得到图片的宽度和高度，所以每隔100毫秒重复调用检查
setTimeout(checkImg(’ + theURL + ’,’ + winName + ’), 100)
}
}
function OpenFullSizeWindow(theURL,winName,features) {
var aNewWin, sBaseCmd;
// 弹出窗口外观参数
sBaseCmd = toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no,;
// 调用是否来自 checkImg
if (features == null || features == ){
// 创建图像对象
imgObj = new Image();
// 设置图像源
imgObj.src = theURL;
// 开始获取图像大小
checkImg(theURL, winName)
}
else{
// 打开窗口
aNewWin = window.open(theURL,winName, sBaseCmd + features);
// 聚焦窗口
aNewWin.focus();
}
}
//-->
</script>
<a href=Bt0085.jpg onClick=OpenFullSizeWindow(this.href,’’,’’);return false>图片测试</a>
</body>
</html>
ASP爱好者网站首页(ASP+版本)代码
作者：未知 来源：未知 加入时间：2005-9-15 人气：34
前一段时间本站将首页更换为了ASP+程序，为了能让更多的朋友对asp+有更好的了解，所以特将源代码
公开，至于对代码的注释，相信大家参考现在网上的asp+语法之类的东东都能看懂，主要涉及到VB与(ADO+)
对数据库进行读取操作，此程序仅仅作为一个参考。
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.ADO" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<title>ASP爱好者</title>
<STYLE type=text/css>.unnamed1 {
FONT-SIZE: 9pt
}
</STYLE>
<STYLE type=text/css>A {
COLOR: #0000ff; FONT-SIZE: 9pt; TEXT-DECORATION: none
}
A:visited {
COLOR: #000000; TEXT-DECORATION: none
}
A:hover {
COLOR: #ff99ff; TEXT-DECORATION: underline
}
TD {
FONT-SIZE: 9pt; LINE-HEIGHT: 14pt
}
</STYLE>
<script language="vb" runat=server>
Sub Page_Load(Source As Object, E As EventArgs)
Dim DS As DataSet
Dim MyConnection As ADOConnection
Dim MyCommand As ADODataSetCommand
Dim strSql as String
’以下是数据库联结
MyConnection = New ADOConnection("Driver={Microsoft Access Driver (*.mdb)};DBQ=" & server.mappath
("XXXXX.mdb"))
strSql ="SELECT top 5 Topics.T_Message,Topics.T_Status, Topics.Forum_ID, Topics.Topic_ID,
Topics.T_subject,Topics.T_Mail, Topics.T_Originator, Topics.T_Replies,
Topics.T_Last_Post,forum.Forum_ID,forum.F_Name "
strSql = strSql & "FROM Topics,forum where Topics.Forum_ID=forum.Forum_ID "
strSql = strSql & " order by Topics.T_Last_Post DESC"
MyCommand = New ADODataSetCommand(strSql, myConnection)
DS = new DataSet()
MyCommand.FillDataSet(DS, "Topics1")
dlwenzhang.DataSource = DS.Tables("Topics1").DefaultView
dlwenzhang.DataBind()
MyConnection = New ADOConnection("Driver={Microsoft Access Driver (*.mdb)};DBQ=" & server.mappath
("XXXXX.mdb"))
strSql ="SELECT top 5 * FROM links,cats where links.catid=cats.catid order by links.linkid DESC"
MyCommand = New ADODataSetCommand(strSql, myConnection)
DS = new DataSet()
MyCommand.FillDataSet(DS, "Topics2")
daima.DataSource = DS.Tables("Topics2").DefaultView
daima.DataBind()
MyConnection = New ADOConnection("Driver={Microsoft Access Driver (*.mdb)};DBQ=" & server.mappath
("XXXXX.mdb"))
strSql ="SELECT top 5 * FROM links,cats where links.catid=cats.catid order by links.linkid DESC"
MyCommand = New ADODataSetCommand(strSql, myConnection)
DS = new DataSet()
MyCommand.FillDataSet(DS, "Topics3")
zujian.DataSource = DS.Tables("Topics3").DefaultView
zujian.DataBind()
End Sub
</script>
</head>
<body>
<table border="0" width="100%" bordercolor="#008080" bordercolorlight="#C0C0C0"
bordercolordark="#FFFFFF">
<tr>
<td><img src="image/aspfans.gif" width="400" height="60" alt="aspfans.gif (12099 bytes)"></td>
<td width="50%" valign="middle"><a href="http://www.21ic.com" target="_blank"><img src="468x60-21ITT2.gif"
width="350" height="50" alt="中国电子网" border=0></a></td>
</tr>
<tr>
<td width="100%" bgcolor="#C0C0C0" colspan="2"><font color="#FFFFFF"><a href="default.asp"
>本站首页</a> - <a href="info/Default.asp"
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>站点</a> - <a href="aspgbook/addguest.htm"
>留言</a> - <a href="products.htm"
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</tr>
</table>
<table border="1" width="100%" bordercolor="#808080" bordercolorlight="#FFFFFF"
bordercolordark="#C0C0C0" >
<tr>
<td width="19%" valign="top"><table border="1" width="100%" bordercolor="#008080"
bordercolorlight="#000000" bordercolordark="#FFFFFF" bgcolor="#C0C0C0" cellspacing="0" cellpadding="0">
<tr>
<td width="100%" bgcolor="#C0C0C0"><p align="center"><font color="#FFFFFF"><<<a
href="http://asfans.yeah.net"
onClick="window.external.addFavorite(’
http://aspfans.yeah.netmmkey.com’,’ASP爱好者’)"
class="p12">添加到收藏夹</a>>></font></td>
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<td width="100%" bgcolor="#C0C0C0"><p align="center"><font color="#FFFFFF">当前在线：<%=application
("online")%>
人</font></td>
</tr>
<tr>
<td width="100%" bgcolor="#C0C0C0"><p align="center"><font color="#000000">本站产品</font></td>
</tr>
<tr>
<td width="100%" bgcolor="#EEEEEE"> <font color="#FF0000"><strong>免费ASP文章代码
</strong></font>,<a
href="freecode.asp">请点击此处</a>！<br>
<table>
<tr>
<td width="100%"><img alt="S-point.gif (204 bytes)" src="S-point.gif" width="18" height="14"><font
color="#0000ff"><a href="votedemo.asp" name="信息系统">通用网站投票调查系统</a>(</font><font
color="#ff0000">new</font><font color="#0000ff">)</font></td>
</tr>
<tr>
<td width="100%"><img alt="S-point.gif (204 bytes)" src="S-point.gif" width="18" height="14"><a
href="xinxi.asp" name="信息系统"><font color="#0000ff">通用网站信息发布管理系统(专业版)</font></a></td>
</tr>
<tr>
<td width="100%"><img alt="S-point.gif (204 bytes)" src="S-point.gif" width="18" height="14"><a
href="gongqiu.asp"><font color="#0000ff">通用网站供求系统(企业版)</font></a></td>
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<td width="100%"><img alt="S-point.gif (204 bytes)" src="S-point.gif" width="18" height="14"><a
href="paimai.asp"><font color="#0000ff">通用拍卖网站系统(专业版)</font></a></td>
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</table>
</td>
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<td width="100%" bgcolor="#C0C0C0"><p align="center"><font color="#000000">本站组件产品</font></td>
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<tr>
<td width="100%" bgcolor="#EEEEEE"><font color="#5878f8">■<a href="lyfdns.htm"
target="_blank">LyfDns1.0</a>(</font><font
color="#FF0080">DNS组件</font><font color="#5878f8">)<br>
■<a href="lyfimage.htm" target="_blank">LyfImage</a>1.0(</font><font color="#FF0080">图形组件</font><font
color="#5878f8">)<br>
■<a href="lyfupload.htm" target="_blank">LyfUpload</a>1.2(</font><font color="#FF0080">文件上传组件
</font><font
color="#5878f8">)<br>
■<a href="lyfmail.htm" target="_blank">LyfEmail</a>(</font><font color="#FF0080">Email组件</font><font
color="#5878f8">)</font></td>
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<td width="100%" bgcolor="#C0C0C0"><font color="#FFFFFF"><p align="left">
欢迎加入本站的邮件列表以便获得本站的更新信息及本站产品信息！</font></td>
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<td width="100%"><form method="post"
action="http://maillist2.bodachina.com//cgi/mlist.fcgi?FN=1">
<input type="hidden" name="MLID" value="37589"><p>请输入您的email地址：<input
type="text" name="EMAIL" size="20"><br>
<input type="submit" name="SUB" value="订阅"> <input type="submit" name="UNSUB"
value="取消"> </p>
</form>
</td>
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<td width="100%" bgcolor="#C0C0C0"><p align="center"><font color="#000000">站长的其它网站</font><font
color="#FFFFFF"><script
language="javascript">
function winopen(url)
{
if(url!="#")
window.open
(url,"search","toolbar=0,location=1,directories=0,status=1,menubar=1,scrollbars=1,resizable=1,width=780,hei
ght=450,top=0,left=0");
}
</script></font></td>
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<td width="100%" bgcolor="#EEEEEE"><a style="color: rgb(0,0,255)" href="http://jspbbs.yeah.net"
target="_blank">JSP爱好者</a><font
color="#FFFFFF"><img src="new9.gif" width="30" height="14" alt="new9.gif (1181 bytes)"></font><a
style="color: rgb(0,0,255)" href="http://jspbbs.yeah.net" target="_blank"><br>
华中拍卖网</a><br>
<a href="http://macroweb.my168.net" target="_blank" style="color: rgb(0,0,255)">图书在线</a><br>
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<td width="100%" bgcolor="#C0C0C0"><p align="center"><font color="#000000">首页友情链接</font></td>
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<td width="100%" bgcolor="#EEEEEE"><a href="http://aspnet.on.net.cn" target="_blank">ASP下载特区</a></td>
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<td width="100%" bgcolor="#EEEEEE"><a href="http://asphelper.yeah.net" target="_blank">ASP空间站</a></td>
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<td width="100%" bgcolor="#EEEEEE"><a href="http://asp3.126.com/" target="_blank">ASP三角洲</a></td>
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<td width="100%" bgcolor="#EEEEEE"><a href="http://aspage.yeah.net" target="_blank">ASP精品屋</a></td>
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<td width="100%" bgcolor="#EEEEEE"><a href="http://www.tv2nd.com/" target="_blank">第二频道</a></td>
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</table>
</td>
<td width="81%" valign="top" bgcolor="#F2F2F2"><table border="1" width="100%"
bordercolor="#008080" bordercolordark="#FFFFFF"
bgcolor="#F2F2F2" cellspacing="0" cellpadding="0">
<tr>
<td width="100%" bgcolor="#C0C0C0" height="20"><strong><font color="#00FF00">→</font><font
color="#000000">本站新闻</font></strong> </td>
</tr>
<tr>
<td width="100%" height="20"><font color="#FFFFFF"> </font><img
src="image/l-7.gif" width="26" height="20" alt="l-7.gif (371 bytes)"><font color="#008080">不少朋友反映首页
速度慢，为了能使大家访问本站的速度更快，站长特意将首页程序重新写成了</font><font color="#FF0000"><b>ASP+程
序</b></font><font color="#008080">，编译后相信能满足大家的要求了，看看速度是不是更快点。</font><br>
<font color="#FF0000"><strong>HOT，本站程序继续热卖中，纯手工制作，工艺精
美，价格公道，童叟无欺，欢迎大家联系购买！:)程序优惠销售即将结束，感谢大家支持。<br>
</strong></font> <font color="#000000">为答谢各位ASP爱好者对本站的支持，ASP爱好者网站率先
推出网站程序的百日风暴销售活动，如果您是本站邮件列表的用户，在此其间(7.18-10.28)凭您的邮件地址购买本站产品
均可以享受到特别优惠的价格，</font><b><font color="#FF0000">部分低到180元/套的价格</font></b><font
color="#000000">，心动不如行动!</font></td>
</tr>
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<td width="100%" bgcolor="#C0C0C0" height="20"><font color="#FFFF80"><strong>→</strong></font><font
color="#000000"><b>技术文章</b></font></td>
</tr>
<tr>
<td width="100%">
<%dim surl as String%>
<asp:DataList id="dlwenzhang" width="100%" runat="server">
<template name = "ItemTemplate">
<a href=forum/count.asp?save=<%# Container.DataItem("Topic_ID") %>&url=topic.asp?topic_id=<%#
Container.DataItem("Topic_ID") %>>
·=><%# Container.DataItem("T_subject") %></a> </font>
<font color=’#FF8000’><strong>[<%# Container.DataItem("F_name") %>]</strong></font>
<%# Container.DataItem("T_Last_Post") %> <br>
<%# left(Container.DataItem("T_message"),50) %>...<br>
</template>
</asp:DataList>
<p align="right"><a href="forum/default.asp">>>更多文章</a></td>
</tr>
<tr>
<td width="100%" bgcolor="#C0C0C0" height="20"><font color="#00FFFF"><strong>→</strong></font><font
color="#000000"><b>源码天地</b></font></td>
</tr>
<tr>
<td width="100%">
<asp:DataList id="daima" width="100%" runat="server">
<template name = "ItemTemplate">
<a href=source/redirect.asp?linkid=<%# Container.DataItem("linkid") %>>
·=><%# Container.DataItem("linkname") %></a> </font>
(<font color=red><%# Container.DataItem("good") %></font>)
<%# Container.DataItem("linkadded") %><br>
<%# left(Container.DataItem("linkdesc"),50) %>...<br>
</template>
</asp:DataList>
<p align="right"><a href="source/default.asp">>>更多源码</a></td>
</tr>
<tr>
<td width="100%" bgcolor="#C0C0C0" height="20"><font color="#00FFFF"><strong>→</strong></font><font
color="#000000"><b>组件天地</b></font></td>
</tr>
<tr>
<td width="100%">
<asp:DataList id="zujian" width="100%" runat="server">
<template name = "ItemTemplate">
<a href=source/redirect.asp?linkid=<%# Container.DataItem("linkid") %>>
·=><%# Container.DataItem("linkname") %></a> </font>
(<font color=red><%# Container.DataItem("good") %></font>)
<%# Container.DataItem("linkadded") %><br>
<%# left(Container.DataItem("linkdesc"),50) %>...<br>
</template>
</asp:DataList>
<p align="right"><a href="source/default.asp">>>更多组件</a></td>
</tr>
</table>
</td>
</tr>
</table>
<table border="1" width="100%" bordercolor="#008080" bordercolordark="#FFFFFF"
bordercolorlight="#000000" bgColor="#eeeeee" cellspacing="0" cellpadding="0">
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<td width="100%" ><p align="center">CopyRight By <a
href="mailto:coolknight@263.net">ASP爱好者</a><br>
本页面建议在800*600分辨率、IE4.0以上浏览器浏览 <br>
本站点由 <a href="mailto:coolknight@263.net">刘玉锋</a> 制作维护
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<td width="100%"><p align="center">自2000年4月4日<br>
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