怎么提取img中 src中的内容？

[wenle]

例如：在如下的标记中，我要提取src中的内容http://192.168.1.72/WebAdmin/images/image.jpg
<IMG height=372 alt=aa src="http://192.168.1.72/WebAdmin/images/image.jpg" width=594 border=0>

[ljqingas]

顶

[wdgphc]

http://www.cnblogs.com/hobe/archive/2007/03/14/674292.html

[syc958]

这个很简单呀!

<script language="javascript">

function dd()
{

var a=document.body.innerHTML;
var b=/src=\"([^\"]*?)\"/gi;
var s=a.match(b);

for(var i= 0;i<s.length;i++)
{
alert(s[i]);
alert(RegExp.$1)
}
}


</script>
<p> <span style="font-size: 14pt"> <img height="175" width="257" align="left" alt="" src="/wzyxy/uploads/image/PICT0188(1).JPG" height="175" width="257" />6 </span><input type="button" onclick="dd()"/>

[tt5201]

protected void Page_Load(object sender, EventArgs e)
    {
string str = "<IMG height=372 alt=aa src=\"http://192.168.1.72/WebAdmin/images/image.jpg\" width=594 border=0>";
        string[] temp;
      
        string test = "src=\"(?<qs>[\\s\\S]*?)\"([\\s\\S]*?)>";
        Regex reg = new Regex(test);
        temp = new string[reg.Matches(str).Count];


        int i = 0;
        foreach (Match match in reg.Matches(str.Replace("\r", "").Replace("\n", "").Replace("\r\n", "")))
        {
            if (match.Success)
            {
                temp[i] = match.Groups["qs"].Value.ToString();
                i++;

            }

        }
}

[家鸣]

Match m= Regex.Match("<IMG height=372 alt=aa src=\"http://192.168.1.72/WebAdmin/images/image.jpg\" width=594 border=0>","(?<=<img.+?src=\")[^\"]+(?=\")",RegexOptions.IgnoreCase);
string str=m.Value;

[insus]

Insus.NET试练了一下,不防参考参考,是否合你的要求:

        
string str="<IMG height=\"372\" alt=\"aa\" src=\"http://192.168.1.72/WebAdmin/images/image.jpg\" width=\"594\" border=\"0\" />";


        XmlDocument xDoc = new XmlDocument();       
        xDoc.Load(new System.IO.MemoryStream(System.Text.Encoding.GetEncoding ("UTF-8").GetBytes (str)));
        XmlNodeList xNode = xDoc.SelectNodes("//IMG");
        {
            for (int i = 0; i < xNode.Count; i++)
            {
              Response.Write ( xNode[i].Attributes["src"].Value);               
            }
        }

[wangwei155]

还是加个id属性来的方便
<IMG id="img1" height=372 alt=aa src="http://192.168.1.72/WebAdmin/images/image.jpg" width=594 border=0>

var url = document.getElementById("img1").value;