如何使用 HTML Agility Pack 选择特定表格单元格
我必须从 HTML 表格的单元格中提取特定字段。使用 Firebug，我能够获得所需单元格的确切 XPath（不幸的是，这些单元格没有 id 标签）。我以为我可以使用 DocumentNode.SelectSingleNode 并传入该路径，但它似乎工作不正常。我做错了什么？或者有比我这样做更好的方法吗？不幸的是，我没有使用 XPath 的经验，所以这比我预期的要困难。这是我到目前为止所得到的（我知道 HTML 特别混乱，但这不是我可以控制更改的）：
Dim page As New HtmlAgilityPack.HtmlDocument
Dim node As HtmlAgilityPack.HtmlNode
page.LoadHtml(fileContents)
node = page.DocumentNode.SelectSingleNode("/html/body/form/div[6]/table/tbody/tr/td/table/tbody/tr/td/table/tbody/tr/td/table/tbody/tr/td[2]")
非常感谢。
I have to pull out particular fields from cells in an HTML table. Using Firebug I was able to get the exact XPath to the cells I need (unfortunately, the cells don't have an id tag). I thought I could use DocumentNode.SelectSingleNode and pass in that path, but it doesn't seem to be working right. What am I doing wrong? Or is there a better approach to this than how I am doing it? Unfortunately, I have no experience with XPath so this is turning out harder than I expected it to be. Here's what I have so far (I know the HTML is particuarly messy, but that's not in my control to change):
Dim page As New HtmlAgilityPack.HtmlDocument
Dim node As HtmlAgilityPack.HtmlNode
page.LoadHtml(fileContents)
node = page.DocumentNode.SelectSingleNode("/html/body/form/div[6]/table/tbody/tr/td/table/tbody/tr/td/table/tbody/tr/td/table/tbody/tr/td[2]")
Much appreciated.
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
Firebug 可能修复了损坏的 html 标签。
如果你想选择Html节点，建议使用class或id。
例如：
缩短路径，并使用类或id选择器。
如果表有它自己的id，你可以使用：
尝试一下，你会发现XPATH很有趣。
Firebug maybe fixed broken html tags.
If you want to pick and Html node,it is recommend use class or id.
For example:
shorten the path,and use class or id selector.
if the table has it's own id,you can use:
try it,you will find XPATH is interesting.