*******正则表达式(div标签内容提取)

OceanRain 2009-08-14 11:33:05

1.获取远程页面的内容：
........其它html略........
<DIV class="news_rbox mart10 border1" id=ShowPhoto>
<DIV class=news_rtit1>
<DIV class=news_rnav5><a>中国</a><img src='' /></DIV>
</DIV>
</DIV>
........其它html略...........

2.要求结果:
<DIV class=news_rtit1>
<DIV class=news_rnav5><a>中国</a><img src='' /></DIV>
</DIV>

3.问题:如果提取标签为DIV且id=ShowPhoto的内容？

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-过客- 2009-08-14

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结果取m.Groups[2].Value

-过客- 2009-08-14

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晕死，明显跟你给的例子不一致。。。

<div class="news_rbox mart10 border1" id="ShowPhoto">

算了，给你写通用了，不管效率了

Regex reg = new Regex(@"(?is)<div\b(?:(?!id=).)*id=(['""]?)ShowPhoto\1[^>]*>((?><div[^>]*>(?<o>)|</div>(?<-o>)|(?:(?!</?div\b).)*)*(?(o)(?!)))</div>");

OceanRain 2009-08-14

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想取<div class="news_rbox mart10 border1" id="ShowPhoto"> </div>之间的内容，上面的正则取不出.

OceanRain 2009-08-14

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源文件：
<div class="news_rbox mart10 border1" id="ShowPhoto">
<div class="news_rtit1">
<div class="news_rnav5"></div>
</div>

<div style="padding:5px" class="c333">

<div class="news_rboxx"><div style="height:100px; overflow:hidden"><a href="http://photos.jinti.com/Channel_15569" target="_blank"><img src=http://pic.jinti.com/member/459491/140_105_20098149456705.jpg border="0" /></div>
<a href="http://photos.jinti.com/Channel_15569" target="_blank">华丽的美人鱼</a></div>

<div class="news_rboxx"><div style="height:100px; overflow:hidden"><a href="http://photos.jinti.com/Channel_15568" target="_blank"><img src=http://pic.jinti.com/member/459491/140_105_200981485528705.jpg border="0" /></div>
<a href="http://photos.jinti.com/Channel_15568" target="_blank">碎花蓝的猜想</a></div>

<div class="news_rboxx"><div style="height:100px; overflow:hidden"><a href="http://photos.jinti.com/Channel_15567" target="_blank"><img src=http://pic.jinti.com/member/459491/140_105_20098138562705.jpg border="0" /></div>
<a href="http://photos.jinti.com/Channel_15567" target="_blank">黄奕柔美小乔造型曝光</a></div>

<div class="news_rboxx"><div style="height:100px; overflow:hidden"><a href="http://photos.jinti.com/Channel_15566" target="_blank"><img src=http://pic.jinti.com/member/459491/140_105_200981291112705.jpg border="0" /></div>
<a href="http://photos.jinti.com/Channel_15566" target="_blank">安室奈美惠代言变宫...</a></div>

</div>
</div>

-过客- 2009-08-14

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[Quote=引用 4 楼 oceanrain 的回复:]
顶
[/Quote]

什么意思，3楼代码不符合要求？

OceanRain 2009-08-14

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顶

-过客- 2009-08-14

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Regex reg = new Regex(@"(?is)(?<=<div\b(?:(?!id=).)*id=ShowPhoto[^>]*>)(?><div[^>]*>(?<o>)|</div>(?<-o>)|(?:(?!</?div\b).)*)*(?(o)(?!))(?=</div>)");

参考

【分享】正则平衡组应用场景分析及性能优化

angieduan 2009-08-14

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Regex expression = new Regex("<div(?:.|\\n)*?id=ShowPhoto(?:.|\\n)*?>((?:.|\\n)*?)</div>", RegexOptions.IgnoreCase);

Group g = expression.Matches(text)[1].Groups[1];

OceanRain 2009-08-14

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顶下

-过客- 2009-08-14

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[Quote=引用 11 楼 oceanrain 的回复:]
http://auto.jinti.com/iframe/WebRight.aspx这个是源页面，从这个页面提取，上面的正则把 <div class="news_rbox mart10 border1" id="ShowPhoto"> 标签外的div也取出来了.
[/Quote]

你的那个方法里data传的是什么？按你给的这个页面，里面根本就没有id="ShowPhoto"的div

还有，给一下你是如何使用那个正则的代码

Regex reg = new Regex(@"(?is)<div\b(?:(?!id=).)*id=(['""]?)ShowPhoto\1[^>]*>((?><div[^>]*>(?<o>)|</div>(?<-o>)|(?:(?!</?div\b).)*)*(?(o)(?!)))</div>");

MatchCollection mc = reg.Matches(yourStr);

foreach (Match m in mc)

{

    richTextBox2.Text += m.Groups[2].Value + "\n";

}

qq904492758 2009-08-14

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你用xml 转一下去节点多好啊更容易控制啊

OceanRain 2009-08-14

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通过下面代码获取http://auto.jinti.com/iframe/WebRight.aspx页面的源文件
public static string PostData(string url, string data)
{
string info = string.Empty;
try
{
CookieContainer cc = new CookieContainer();
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
request.CookieContainer = cc;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
Stream requestStream = request.GetRequestStream();
byte[] byteArray = Encoding.UTF8.GetBytes(data);
requestStream.Write(byteArray, 0, byteArray.Length);
requestStream.Close();
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
Uri responseUri = response.ResponseUri;
Stream receiveStream = response.GetResponseStream();
Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
StreamReader readStream = new StreamReader(receiveStream, encode);
info = readStream.ReadToEnd();
}
catch{}

return info;
}

OceanRain 2009-08-14