gistfile1.rb

# This extends the Jsoup elements collection with #nonblank_attr. Extending Java classes from Ruby == awesome
class ::Java::OrgJsoupSelect::Elements
  def nonblank_attr(attr, default = nil)
    attr = attr.to_s
    e = find { |el| el.attr(attr).present? }
    e ? e.attr(attr) : default
  end
end

include_package 'org.jsoup'

document = Jsoup.parse(body, uri)
title = document.select('title').text
document.select('meta[itemprop=title], meta[name=og:title], meta[name=twitter:title]').nonblank_attr('content')