红宝石机械化没有得到充分的内容

Question

我使用机械化和引入nokogiri解析这两个站点上的某些乐透结果（它们很相似）： http://www1.caixa.gov.br/loterias/loterias/lotofacil/lotofacil_resultado.asp http://lotofacil.resultadoloteria.org/

这里是我的代码：

require 'nokogiri' 
require 'mechanize' 

agent = Mechanize.new 
agent.user_agent_alias = 'Mac Safari' 
page = agent.get('http://lotofacil.resultadoloteria.org/') 
doc = Nokogiri::HTML(page.body) 
doc.xpath('//table[@class="tabela_jogo"]//span').each { |value| puts value } 

第二现场工作正常。结果：

<span id="lfacil1">01</span> 
<span id="lfacil2">03</span> 
<span id="lfacil3">05</span> 
<span id="lfacil4">08</span> 
<span id="lfacil5">10</span> 
<span id="lfacil6">11</span> 
<span id="lfacil7">13</span> 
<span id="lfacil8">14</span> 
<span id="lfacil9">15</span> 
<span id="lfacil10">18</span> 
<span id="lfacil11">20</span> 
<span id="lfacil12">22</span> 
<span id="lfacil13">23</span> 
<span id="lfacil14">24</span> 
<span id="lfacil15">25</span> 

但我从第一个拿不到乐透号码。这里的结果：

<span id="lfacil1"></span> 
<span id="lfacil2"></span> 
<span id="lfacil3"></span> 
<span id="lfacil4"></span> 
<span id="lfacil5"></span> 
<span id="lfacil6"></span> 
<span id="lfacil7"></span> 
<span id="lfacil8"></span> 
<span id="lfacil9"></span> 
<span id="lfacil10"></span> 
<span id="lfacil11"></span> 
<span id="lfacil12"></span> 
<span id="lfacil13"></span> 
<span id="lfacil14"></span> 
<span id="lfacil15"></span> 
<span id="lfacil1_2"></span> 
<span id="lfacil2_2"></span> 
<span id="lfacil3_2"></span> 
<span id="lfacil4_2"></span> 
<span id="lfacil5_2"></span> 
<span id="lfacil6_2"></span> 
<span id="lfacil7_2"></span> 
<span id="lfacil8_2"></span> 
<span id="lfacil9_2"></span> 
<span id="lfacil10_2"></span> 
<span id="lfacil11_2"></span> 
<span id="lfacil12_2"></span> 
<span id="lfacil13_2"></span> 
<span id="lfacil14_2"></span> 
<span id="lfacil15_2"></span> 

我觉得是一些与机械化，因为p page.body返回而不乐透号码太多的内容。有任何想法吗？

谢谢。 :)

Answer 1

那是因为他们不在那里。我发现他们对你虽然：

page = agent.get('http://www1.caixa.gov.br/loterias/loterias/lotofacil/lotofacil_pesquisa_new.asp') 
numbers = page.body.split('|')[3..17] 

代替，这也：

doc = Nokogiri::HTML(page.body) 

机械化已经慎重了，给你：

doc = page.parser