运行以下命令，它应该返回序列。 Xpath使用chrome Xpath进行处理，但在nokogiri中它只返回空字符串。
require 'open-uri'
require 'nokogiri'
doc = Nokogiri::HTML(open("https://pt.wiktionary.org/wiki/fazer"))
p sequence = doc.xpath('//*[@id="NavFrame1"]/div[2]/table[2]/tbody/tr[12]')
答案 0 :(得分：0)
我刚刚和Capybara一起尝试过Poltergeist;它工作得很好。当我尝试使用您的代码时，div[@id="NavFrame1"]不存在。所以可能存在解析问题......
require 'capybara'
require 'capybara/dsl'
require 'capybara/poltergeist'
Capybara.register_driver :poltergeist_debug do |app|
Capybara::Poltergeist::Driver.new(app, inspector: true)
end
Capybara.javascript_driver = :poltergeist_debug
Capybara.current_driver = :poltergeist_debug
visit("https://pt.wiktionary.org/wiki/fazer")
doc = Nokogiri::HTML.parse(page.html)
p sequence = doc.xpath('//*[@id="NavFrame1"]/div[2]/table[2]/tbody/tr[12]')
答案 1 :(得分：0)
问题不在于@shota
建议的解析实际问题是您尝试解析的div元素不是第一个响应的一部分。它实际上是使用JavaScript添加的。
如果您看到
的页面来源https://pt.wiktionary.org/wiki/fazer 即view-source:https://pt.wiktionary.org/wiki/fazer
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12-19 21:11:34.277 14704-14704/com.sparidapps.musicplayer I/TAG: que Marshmello - Alone (Official Music Video)
12-19 21:11:34.277 14704-14704/com.sparidapps.musicplayer I/TAG: que [Electro] - Laszlo - Supernova [Monstercat Release
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12-19 21:11:34.277 14704-14704/com.sparidapps.musicplayer I/TAG: que2 Louis Armstrong - What A Wonderful World [HQ]
12-19 21:11:34.277 14704-14704/com.sparidapps.musicplayer I/TAG: que2 [Electro] - Laszlo - Supernova [Monstercat Release
12-19 21:11:34.277 14704-14704/com.sparidapps.musicplayer I/TAG: que2 Vangelis - Alpha
12-19 21:11:34.277 14704-14704/com.sparidapps.musicplayer I/TAG: que2 Chris Brown - Turn Up the Music
12-19 21:11:34.277 14704-14704/com.sparidapps.musicplayer I/TAG: que2 Frank Sinatra Fly Me To The Moon
12-19 21:11:34.278 14704-14704/com.sparidapps.musicplayer I/TAG: que2 Marshmello - Alone (Official Music Video)