Nokogiri Xpath在< BR>之后检索文本在< TD>和< SPAN> [英] Nokogiri Xpath to retrieve text after <BR> within <TD> and <SPAN>
问题描述
我有以下html，并想知道如何使用xpath检索所有信息：
- 名称（第一，最后）
- 昵称
- 电子邮件
- 送货地址...
I have the following html and like to know how to use xpath to retrieve all the info: - Name(first, last) - Nick Name - email - shipping address...
主要检索< BR> 后的文字。非常感谢。
Primarily, retrieve text after <BR>. Many Thanks in advance.
<table>
<tr>
<td valign="top" width="50%" align="left">
<span>Buyer</span><br/>FirstName LastName<br/>NickName<br/>First.Last@SomeCompany.com</td>
<tr><td valign="top" width="40%" align="left">
<span><span>Shipping address - </span><span>confirmed</span></span><br/>FirstName LastName<br/>Attn: FirstName<br/>1234 Main St.<br/>TheCity, TheState, 12345<br/>United States<br/></td>
</tr></table>
在我发布上述问题后，我了解到我可以做到这些，但看起来并不干净：
After I posted the above question, I learned that I can do these, but does not look clean:
buyer = html.xpath("//span/text()[contains(., 'Buyer')]").first.parent
buyer_name = buyer.next.next
puts "Buyer's Full name: #{buyer_name.text}"
buyer_nick = buyer_name.next.next
puts "Buyer's Nick name: #{buyer_nick.text}"
buyer_email = buyer_nick.next.next
puts "Buyer's email: #{buyer_email.text}"
现在我的问题是为什么html.xpath（// span / text（）[contains（。，'Buyer'）]）返回TEXT本身而不是ELEMENT。再次感谢!!
My question now is why the html.xpath("//span/text()[contains(., 'Buyer')]") return the TEXT itself instead of the ELEMENT. Again, thanks!!
推荐答案
这里有一个简洁的方法：
Here's a concise way:
name, nick, email, *addr = doc.search('//td/text()[preceding-sibling::br]')
puts name, nick, email, "--", addr
XPath完全符合您的说法：所有文本节点在 br 之后。地址被混合到一个变量中，但如果你愿意，你可以单独获得组件。
The XPath does exactly what you stated: it takes all text nodes following a br. The address is slurped into one variable, but you can get the components separately if you want.
输出：
Output:
FirstName LastName
NickName
First.Last@SomeCompany.com
--
FirstName LastName
Attn: FirstName
1234 Main St.
TheCity, TheState, 12345
United States
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