使用HtmlAgilityPack获取iframe源

问题描述

我正在尝试在html文档上获取所有iFrame源url。我尝试将HtmlAgilityPack与xpath一起使用-但我似乎没有得到来源列表。

I am trying to get all iFrame source urls on an html doc. I tried using HtmlAgilityPack with xpath - but I don't seem to be getting a list of sources.

HtmlAgilityPack.HtmlDocument myHtml= new HtmlDocument();
myHtml.LoadHtml(htmlString);

foreach (HtmlNode framesrc) in myHtml.DocumentNode.SelectNodes("//iframe/src"))
{
    srcCollection.add(framesrc);
}

我的xpath错误吗？

Is my xpath wrong?

推荐答案

实际上，这个开源html解析器使用的查询类似于以下查询：

Actually this opensource html parser uses query look like following query:

HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();

HtmlNodeCollection nodes = doc.DocumentNode.SelectNodes("//iframe[@src]");


foreach(var node in nodes){
    HtmlAttribute attr = node.Attributes["src"];
    Console.WriteLine(attr.Value);
}

这篇关于使用HtmlAgilityPack获取iframe源的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！