如何使用<script>nokogiri和机械化从标签中提取文本？

Question

这是一个预订网站的源代码的一部分:

<script>
booking.ensureNamespaceExists('env');
booking.env.b_map_center_latitude = 53.36480155016638;
booking.env.b_map_center_longitude = -2.2752803564071655;
booking.env.b_hotel_id = '35523';
booking.env.b_query_params_no_ext = '?label=gen173nr-17CAEoggJCAlhYSDNiBW5vcmVmaFCIAQGYAS64AQTIAQTYAQHoAQH4AQs;sid=e1c9e4c7a000518d8a3725b9bb6e5306;dcid=1';
</script>

我想提取booking.env.b_hotel_id。这样我就得到了'25523'的值。我如何通过nokoogiri和机械化实现这一点?

希望有人能帮忙!谢谢!:)

Answer 1

require 'mechanize'
agent = Mechanize.new
page = agent.get('http://www.booking.com/hotel/us/solera-by-stay-alfred.html?label=gen173nr-17CAEoggJCAlhYSDNiBW5vcmVmcgV1c19ueYgBAZgBMbgBBMgBBNgBAegBAfgBAg;sid=695d6598485cb1a8fd9e39c5de3878ba;dcid=4;checkin=2015-10-20;checkout=2015-10-21;dist=0;group_adults=2;room1=A%2CA;sb_price_type=total;srfid=cf5d76283b73d34a1d7e0d61cad6974e38a94351X1;type=total;ucfs=1&')
match = agent.page.search("script").text.scan(/^booking.env.b_hotel_id = '.*'/)
puts match
puts match[0].split("'")[1]

输出:

booking.env.b_hotel_id = '1202411'
1202411

帮助我解决这个问题的页面:

http://robdodson.me/crawling-pages-with-mechanize-and-nokogiri/

使用nokogiri解析javascript函数元素

正则表达式—以字符串

开始和结束http://www.rubular.com