尝试使用 nokogiri 在 xml 文件中的 cdata 标记中获取内容 [英] trying to get content inside cdata tags in xml file using nokogiri
问题描述
我在这方面看到了几件事,但到目前为止似乎没有任何效果.我正在使用 rails 3 ruby 1.9.2 上的 nokogiri 通过 url 解析 xml.
I have seen several things on this, but nothing has seemed to work so far. I am parsing an xml via a url using nokogiri on rails 3 ruby 1.9.2.
xml 片段如下所示:
A snippet of the xml looks like this:
<NewsLineText>
<![CDATA[
Anna Kendrick is ''obsessed'' with 'Game of Thrones' and loves to cook, particularly creme brulee.
]]>
</NewsLineText>
我正在尝试解析它以获取与 NewsLineText 关联的文本
I am trying to parse this out to get the text associated with the NewsLineText
r = node.at_xpath('.//newslinetext') if node.at_xpath('.//newslinetext')
s = node.at_xpath('.//newslinetext').text if node.at_xpath('.//newslinetext')
t = node.at_xpath('.//newslinetext').content if node.at_xpath('.//newslinetext')
puts r
puts s ? if s.blank? 'NOTHING' : s
puts t ? if t.blank? 'NOTHING' : t
我得到的回报是
<newslinetext></newslinetext>
NOTHING
NOTHING
所以我知道我的标签被正确命名/拼写以获取新闻行文本数据,但 cdata 文本永远不会出现.
So I know my tags are named/spelled correctly to get at the newslinetext data, but the cdata text never shows up.
我需要对 nokogiri 做什么才能获得此文本?
What do I need to do with nokogiri to get this text?
推荐答案
您正在尝试使用 Nokogiri 的 HMTL 解析器解析 XML.如果 node
来自 XML 解析器,则 r
将是 nil
,因为 XML 区分大小写;你的 r
不是 nil
所以你使用的是不区分大小写的 HTML 解析器.
You're trying to parse XML using Nokogiri's HMTL parser. If node
as from the XML parser then r
would be nil
since XML is case sensitive; your r
is not nil
so you're using the HTML parser which is case insensitive.
使用 Nokogiri 的 XML 解析器,你会得到这样的结果:
Use Nokogiri's XML parser and you will get things like this:
>> r = doc.at_xpath('.//NewsLineText')
=> #<Nokogiri::XML::Element:0x8066ad34 name="NewsLineText" children=[#<Nokogiri::XML::Text:0x8066aac8 "
">, #<Nokogiri::XML::CDATA:0x8066a9c4 "
Anna Kendrick is ''obsessed'' with 'Game of Thrones' and loves to cook, particularly creme brulee.
">, #<Nokogiri::XML::Text:0x8066a8d4 "
">]>
>> r.text
=> "
Anna Kendrick is ''obsessed'' with 'Game of Thrones' and loves to cook, particularly creme brulee.
"
您将能够通过 r.text
或 r.children
获取 CDATA.
and you'll be able to get at the CDATA through r.text
or r.children
.
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