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我有一个 xpath 来抓取每个没有被任何 html 标签包围的文本节点。相反，它们通过<br>. 我想用<span>标签包装这些。

Nokogiri::HTML(open("http://vancouver.en.craigslist.ca/van/swp/1426164969.html"))
.xpath("//br/following-sibling::text()|//br/preceding-sibling::text()").to_a

将返回那些文本节点。

完整修改后的代码如下：

doc = Nokogiri::HTML(open("http://vancouver.en.craigslist.ca/van/swp/1426164969.html"))
.xpath("//br/following-sibling::text()|//br/preceding-sibling::text()").wrap("<span></span>")
puts doc

我希望看到一个完整的 html 源代码，其中包含用<span>标签包裹的那些文本，但我得到了以下内容：

Date: 2009-10-17,  4:36PM PDT
Reply to:
This is a spectacular open plan 1000 sq. ft. loft is in a former Canada Post building. Upon entering the loft from the hallway you are amazed at where you have arrived.... a stunning, bright and fully renovated apartment that retains its industrial feel. The restoration of the interior was planned and designed by a famous Vancouver architect.
The loft is above a police station, so youÂre guaranteed peace and quite at any time of the day or night.
The neighborhood is safe and lively with plenty of restaurants and shopping. ThereÂs a starbucks across the street and plenty of other coffee shops in the area.  Antique alley with its hidden treasures is one block away, as well as the beautiful mile long boardwalk. Skytrain station is one minute away (literally couple of buildings away). 15 minutes to Commercial drive, 20 minutes to downtown Vancouver and Olympic venues.
Apartment Features:
-       Fully furnished
-       14 ft ceilings
-       Hardwood floors
-       Gas fireplace
-       Elevator
-       Large rooftop balcony
-       Full Kitchen: Fully equipped with crystal, china and utensils
-       Dishwasher
-       Appliances including high-end juice maker, blender, etc.
-       WiFi (Wireless Internet)
-       Bathtub
-       Linens &amp; towels provided
-       Hair dryer
-       LCD Flat-screen TV with DVD player
-       Extensive DVD library
-       Music Library: Ipod connection
-       Wii console with Guitar Hero, games
-       Book and magazine library
-       Non-smoking
We are looking to exchange for a place somewhere warm (California, Hawaii, Mexico, South America, Central America) or a place in Europe (UK, Italy, France).
Email for other dates and pictures of the loft.
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1 回答 1

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您的 doc 变量未分配给整个文档 - 您应该使用

doc = Nokogiri::HTML(open("http://vancouver.en.craigslist.ca/van/swp/1426164969.html"))
doc.xpath("//br/following-sibling::text()|//br/preceding-sibling::text()").wrap("<span></span>")
puts doc

不幸的是，它并没有解决问题，因为 nokogiri 首先将所有 brs 放在所有 span 中，并带有如下文本：

<br><br><br><br><span>
text</span><span>
text</span><span>
text</span><span>
text</span>

但你可以这样做

doc = Nokogiri::HTML(open("http://vancouver.en.craigslist.ca/van/swp/1426164969.html"))
doc.search("//br/following-sibling::text()|//br/preceding-sibling::text()").each do |node|
  node.replace(Nokogiri.make("<span>#{node.to_html}</span>"))
end
puts doc
于 2009-10-25T09:00:45.863 回答