将 mechanize 与正则表达式结合使用以 select 链接中的特定文本以跟随

Question

我有一个页面如下：

#<Mechanize::Page::Link
   "TCO11_IIIE"
   "/me/secure/ViewSample.do?id=211112">
  #<Mechanize::Page::Link
   "TCO15_IIIE"
   "/me/secure/do?id=211113">
  #<Mechanize::Page::Link
   "TCO16_IIC"
   "/me/secure/ViewSample.do?id=211114">
  #<Mechanize::Page::Link
   "TCO17_IIC"
   "/me/secure/ViewSample.do?id=211116">
  #<Mechanize::Page::Link
   "TCO17_IIIE"
   "/me/secure/ViewSample.do?id=211115">
  #<Mechanize::Page::Link
   "TCO19_IID"
   "/me/secure/ViewSample.do?id=211117">
  #<Mechanize::Page::Link
   "TCO21_IIC"
   "/me/secure/ViewSample.do?id=211118">
  #<Mechanize::Page::Link
   "TCO21_IIIE"
   "/me/secure/do?id=211119">
  #<Mechanize::Page::Link
   "TCO23_IIC"
   "/me/secure/do?id=211120">

我正在编写一个脚本来尝试跟踪其中包含 'ViewSample' 的 links（然后下载以 fq 结尾但与此问题无关的特定 links ).

我对如何执行此操作感到有点困惑，因为我认为方法 .search 和 .links_with 需要整个 link 文本的确切字符串（？或者它是href？？？）。所以我想我需要在下面代码的第一行中使用正则表达式：

master_page.search("ViewSample") do |download_list_link|
    download_list_page = agent.get(download_list_link[:href])

    download_list_page.search("td > a") do |link|
        if link.content.include?("fq.gz")
            out_file = File.new("downloaded_file", "w")
            out_file.puts($agent.get_file(link[:href]))
            out_file.close
        end
    end
end

Answer 1

这就是 select 的用途：

page.links.select{|link| link.href[/ViewSample/]}

或

page.search('a').select{|a| a[:href][/ViewSample/]}

将 mechanize 与正则表达式结合使用以 select 链接中的特定文本以跟随

Using mechanize with regular expression to select specific text in links to follow

ruby

regex

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nokogiri