我怎么能和Nokogiri和cURB一起刮?

时间:2015-04-10 23:11:19

标签: ruby web-scraping nokogiri curb

所以我试图将www.latimes.com的某个部分作为一种练习并且我选择的部分" trb_outfit_group trb_outfit_section"似乎没有任何建议?如果需要,我可以发布latimes.com HTML。

这是我的代码:

require'nokogiri'    
require'curb'

http = Curl.get("http://www.latimes.com/") do |http|
    http.headers['User-Agent'] = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10; rv:33.0) Gecko/20100101 Firefox/33.0"
end

html = Nokogiri::HTML(http.body_str)

html.css("trb_outfit_group trb_outfit_section").each do |node|
    puts node.inner_html "\n\n"
end

这是我试图抓的代码:

    <section class="trb_outfit_group trb_outfit_section" data-content-limit="5" data-role="imgsize_ratiosizecontainer" data-content-briefs="false" data-outfits-art-disable=""><ul class="trb_outfit_group_list"><li class="trb_outfit_group_list_item" data-content-id="83268726" data-content-slug="la-me-ln-san-diego-water-protest-20150410" data-content-title="San Diego water officials protest proposed cutback rules" data-content-section="LOCAL" data-content-type="story" data-content-thumbnail="http://www.trbimg.com/img-55285596/turbine/la-me-ln-san-diego-water-protest-20150410" data-content-url="/local/lanow/la-me-ln-san-diego-water-protest-20150410-story.html">                <a imgratio="1x1" imgwidth="100" imgheight="100" href="/local/lanow/la-me-ln-san-diego-water-protest-20150410-story.html#navtype=outfit" data-role="imgsize_item" class="trb_outfit_group_list_item_figure"><img src="http://www.trbimg.com/img-55285596/turbine/la-me-ln-san-diego-water-protest-20150410/100/100x100" data-height="100" data-width="100" data-ratio="1x1" data-baseurl="http://www.trbimg.com/img-55285596/turbine/la-me-ln-san-diego-water-protest-20150410" alt="San Diego water officials protest proposed cutback rules" class="trb_outfit_group_list_item_img" title="San Diego water officials protest proposed cutback rules" data-content-naturalwidth="2048" data-content-naturalheight="1365"></a><section class="trb_outfit_group_list_item_body"><div class="trb_outfit_group_item_label" data-content-label=""><span class="trb_outfit_categorySectionHeading"><a class="trb_outfit_categorySectionHeading_a" href="/local/lanow/#navtype=outfit">L.A. 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  </div>
</section><section class="trb_outfit_group trb_outfit_section" data-content-limit="2" data-role="imgsize_ratiosizecontainer" data-content-briefs="false" data-outfits-art-disable=""><div class="trb_outfit_section_header"><h3 class="trb_outfit_section_title">LACMA at 50</h3><a class="trb_outfit_callToAction" href="http://www.latimes.com/entertainment/la-et-cm-lacma-at-50-main-htmlstory.html">Full Coverage</a></div><ul class="trb_outfit_group_list"><li class="trb_outfit_group_list_item" data-content-id="83252513" data-content-slug="la-et-cm-ca-lacma-academy-museum-20150412" data-content-title="LACMA sees the big picture as Academy Museum moves in next door" data-content-section="ARTS &amp; ENTERTAINMENT" data-content-type="story" data-content-thumbnail="http://www.trbimg.com/img-5526e11b/turbine/la-et-cm-ca-lacma-academy-museum-20150412" data-content-url="/entertainment/arts/la-et-cm-ca-lacma-academy-museum-20150412-story.html">                <a imgratio="16x9" imgwidth="100" imgheight="100" href="/entertainment/arts/la-et-cm-ca-lacma-academy-museum-20150412-story.html#navtype=outfit" data-role="imgsize_item" class="trb_outfit_group_list_item_figure"><img src="http://www.trbimg.com/img-5526e11b/turbine/la-et-cm-ca-lacma-academy-museum-20150412/100/100x56" data-height="100" data-width="100" data-ratio="16x9" data-baseurl="http://www.trbimg.com/img-5526e11b/turbine/la-et-cm-ca-lacma-academy-museum-20150412" alt="LACMA sees the big picture as Academy Museum moves in next door" class="trb_outfit_group_list_item_img" title="LACMA sees the big picture as Academy Museum moves in next door" data-content-naturalwidth="2048" data-content-naturalheight="1270"></a><section class="trb_outfit_group_list_item_body"><div class="trb_outfit_group_item_label" data-content-label=""><span class="trb_outfit_categorySectionHeading"><a class="trb_outfit_categorySectionHeading_a" href="/entertainment/arts/#navtype=outfit">ARTS &amp; 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1 个答案:

答案 0 :(得分:1)

考虑一下:

require'nokogiri'
require'curb'

url = Curl.get("http://www.latimes.com/") do |http|
    http.headers['User-Agent'] = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10; rv:33.0) Gecko/20100101 Firefox/33.0"
end

html = Nokogiri::HTML(url.body_str)

puts html.css(".trb_outfit_group.trb_outfit_section").inner_html

注意:

  1. 类的CSS选择器错误。
  2. 要获得inner_html,您无需遍历节点。
  3. 将变量http重命名为url,因为它隐藏了迭代器中使用的局部变量。