HtmlAgilityPack并选择节点和子节点 [英] HtmlAgilityPack and selecting Nodes and Subnodes

问题描述

希望有人可以帮助我.

假设我有一个HTML文档，其中包含多个div，例如以下示例:

Let´s say I have a html document that contains multiple divs like this example:

<div class="search_hit">

    <span prop="name">Richard Winchester</span>
    <span prop="company">Kodak</span>
    <span prop="street">Arlington Road 1</span>

</div>
<div class="search_hit">

    <span prop="name">Ted Mosby</span>
    <span prop="company">HP</span>
    <span prop="street">Arlington Road 2</span>

</div>

我正在使用HtmlAgilityPack获取html文档.我需要知道的是如何获取每个"search_hit" -div的跨度?

I´m using HtmlAgilityPack to get the html document. What i need to know is how can i get the spans for each "search_hit"-div?

我的第一个想法是这样的:

My first thought was something like this:

foreach (HtmlAgilityPack.HtmlNode node in doc.DocumentNode.SelectNodes("//div[@class='search_hit']"))
{
     foreach (HtmlAgilityPack.HtmlNode node2 in node.SelectNodes("//span[@prop]"))
     {

     }
}

每个div都应该是一个对象，并具有包含的跨度作为属性. I. e.

Each div should be a object with the included spans as properties. I. e.

public class Record
    {
        public string Name { get; set; }
        public string company { get; set; }
        public string street { get; set; }
    }

然后应填写此列表:

public List<Record> Results = new List<Record>();

但是我正在使用的XPATH没有像应该那样在子节点中进行搜索.它接缝是它一次又一次地搜索整个文档.

But the XPATH i´m using is not doing a search in the subnode as it should do. It seams that it searches the whole document again and again.

我的意思是我已经以这种方式工作了，即我只获得了整个页面的跨度.但是然后我没有跨度和div之间的关系.意思是:我不知道哪个范围与哪个div有关.

I mean I already got it working in that way that i just get the the spans of the whole page. But then i have no relation between the spans and divs. Means: I don´t know anymore which span is related to which div.

有人知道解决方案吗?我已经玩了这么多，我现在完全感到困惑了:)

Does somebody know a solution? I already played around that much that i´m totally confused now :)

感谢您的帮助！

推荐答案

以下内容对我有用.正如BeniBela指出的那样，重要的一点是在第二次调用"SelectNodes"时添加了一个点.

The following works for me. The important bit is just as BeniBela noted to add a dot in second call to 'SelectNodes'.

List<Record> lstRecords=new List<Record>();
foreach (HtmlNode node in doc.DocumentNode.SelectNodes("//div[@class='search_hit']"))
{
  Record record=new Record();
  foreach (HtmlNode node2 in node.SelectNodes(".//span[@prop]"))
  {
    string attributeValue = node2.GetAttributeValue("prop", "");
    if (attributeValue == "name")
    {
      record.Name = node2.InnerText;
    }
    else if (attributeValue == "company")
    {
      record.company = node2.InnerText;
    }
    else if (attributeValue == "street")
    {
      record.street = node2.InnerText;
    }
  }
  lstRecords.Add(record);
}

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