如何提取<style> content from HTML file in Ruby?

Question

我已经从index.html文件复制了内容。 现在，我只想复制样式标签中的所有内容。 我怎样才能做到这一点？

 file = File.open("filepath/index.html", "rb")
 @html_file_contents = file.read  //@html_file_contents has raw html from which I need to extract style tag contents.

Answer 1

您可以使用Nokogiri宝石

require 'nokogiri'

file = File.open("filepath/index.html", "rb")
page = Nokogiri::HTML(file.read)
first_style_tag = page.css('style')[0]
puts first_style_tag.text

请参阅本教程http://ruby.bastardsbook.com/chapters/html-parsing/

未经测试，请尝试