试图使用nokogiri在xml文件中的cdata标签内获取内容 [英] trying to get content inside cdata tags in xml file using nokogiri

问题描述

我已经看到了几件事，但是到目前为止似乎还没有任何效果。我在rails 3 ruby​​ 1.9.2上使用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：

<NewsLineText>
  <![CDATA[
  Anna Kendrick is ''obsessed'' with 'Game of Thrones' and loves to cook, particularly     creme brulee.
  ]]>
</NewsLineText>

我正在尝试将其解析以获取与NewsLineText相关的文本

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正确命名/拼写为获取新闻行文本数据，但cdata文本永远不会显示。

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做什么以获取此文本？

What do I need to do with nokogiri to get this text?

推荐答案

您正尝试使用Nokogiri的HMTL解析器来解析XML。如果 node 来自XML解析器，则 r 将为 nil 由于XML区分大小写；您的 r 不是 nil ，因此您使用的HTML解析器不区分大小写。

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，您将得到以下内容：

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 "\n  ">, #<Nokogiri::XML::CDATA:0x8066a9c4 "\n  Anna Kendrick is ''obsessed'' with 'Game of Thrones' and loves to cook, particularly     creme brulee.\n  ">, #<Nokogiri::XML::Text:0x8066a8d4 "\n">]>
>> r.text
=> "\n  \n  Anna Kendrick is ''obsessed'' with 'Game of Thrones' and loves to cook, particularly     creme brulee.\n  \n"

，您将可以通过 r.text 或 r.children 。

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