nokogiri如何使用

直接来个简单的代码实例就明白啦！

require 'nokogiri'

xml_data=<<XML
  <library>
    <NAME><![CDATA[Favorite Books]]></NAME>
    <book ISBN="11342343">
      <title>To Kill A Mockingbird</title>
      <description><![CDATA[Description#1]]></description>
      <author>Harper Lee</author>
    </book>
    <book ISBN="989894781234">
      <title>Catcher in the Rye</title>
      <description><![CDATA[This is an extremely intense description.]]></description>
      <author>J. D. Salinger</author>
    </book>
    <book ISBN="123456789">
      <title>Murphy's Gambit</title>
      <description><![CDATA[Daughter finds her dad!]]></description>
      <author>Syne Mitchell</author>
    </book>
  </library>
XML

# 载入数据
doc = Nokogiri::XML(xml_data)

# 使用css获取到结点，遍历读取到Book对象中
doc.css('book').each do |node|
  children = node.children

  Book.create(
    :isbn => node['ISBN'],
    :title => children.css('title').inner_text,
    :description => children.css('description').inner_text,
    :author => children.css('author').inner_text
  )
end