HTML Agility pack:解析href標記

asp.net-mvc-3 c# html-agility-pack html-parsing

我如何有效地解析href屬性值:

<tr>
<td rowspan="1" colspan="1">7</td>
<td rowspan="1" colspan="1">
<a class="undMe" href="/ice/player.htm?id=8475179" rel="skaterLinkData" shape="rect">D. Kulikov</a>
</td>
<td rowspan="1" colspan="1">D</td>
<td rowspan="1" colspan="1">0</td>
<td rowspan="1" colspan="1">0</td>
<td rowspan="1" colspan="1">0</td>
[...]

我有興趣擁有玩家ID,這是: 8475179這是我到目前為止的代碼:

<tr>
<td rowspan="1" colspan="1">7</td>
<td rowspan="1" colspan="1">
<a class="undMe" href="/ice/player.htm?id=8475179" rel="skaterLinkData" shape="rect">D. Kulikov</a>
</td>
<td rowspan="1" colspan="1">D</td>
<td rowspan="1" colspan="1">0</td>
<td rowspan="1" colspan="1">0</td>
<td rowspan="1" colspan="1">0</td>
[...]

一般承認的答案

根據你的例子,這對我有用:

HtmlDocument htmlDoc = new HtmlDocument();
htmlDoc.Load("test.html");
var link = htmlDoc.DocumentNode
                  .Descendants("a")
                  .First(x => x.Attributes["class"] != null 
                           && x.Attributes["class"].Value == "undMe");

string hrefValue = link.Attributes["href"].Value;
long playerId = Convert.ToInt64(hrefValue.Split('=')[1]);

對於實際使用,您需要添加錯誤檢查等。


熱門答案

使用XPath表達式來查找它:

 foreach (HtmlNode link in doc.DocumentNode.SelectNodes("//a[@class='undMe']"))
 {
      HtmlAttribute att = link.Attributes["href"];
      Console.WriteLine(new Regex(@"(?<=[\?&]id=)\d+(?=\&|\#|$)").Match(att.Value).Value);
 }



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許可下: CC-BY-SA with attribution
不隸屬於 Stack Overflow
這個KB合法嗎? 是的,了解原因