2013-04-14 46 views
1

我寫了下面的代碼:混淆引入nokogiri :: XML ::#文本的文本輸出

require 'nokogiri' 
require 'pp' 

html = <<-END 
<html> 

    <head> 

    <title> A Dirge </title> 

    <link rel  = "schema.DC" 
      href = "http://purl.org/DC/elements/1.0/"> 

    <meta name = "DC.Title" 
      content = "A Dirge"> 

    <meta name = "DC.Creator" 
      content = "Shelley, Percy Bysshe"> 

    <meta name = "DC.Type" 
      content = "poem"> 

    <meta name = "DC.Date" 
      content = "1820"> 

    <meta name = "DC.Format" 
      content = "text/html"> 

    <meta name = "DC.Language" 
      content = "en"> 

    </head> 

    <body><pre> 

      Rough wind, that moanest loud 
       Grief too sad for song; 
      Wild wind, when sullen cloud 
       Knells all the night long; 
      Sad storm, whose tears are vain, 
      Bare woods, whose branches strain, 
      Deep caves and dreary main, - 
       Wail, for the world's wrong! 

    </pre></body> 

    </html> 
END 

doc = Nokogiri::HTML::DocumentFragment.parse(html) 
pp doc 
doc.children.each do |ch| 
    p ch.text if ch.text? 
end 

但它輸出:

"\n\n \n\n " 
"\n\n " 

現在我的問題是,爲什麼裏面<pre>行。 <\pre>不打印?

任何人都可以幫我解決這個問題嗎?

+0

在一個問題中,將您的輸入數據降低到足以重現問題所需的最小值。在這種情況下,''塊都不相關。保留''是好的,但不要打擾'<meta>'標籤,這些標籤不必要地混淆了事物。 – <span class="text-secondary"> <small> <span></span> </small> </span> </p> </div> </div> </div> </div> </div> </article> </div> <div class="answer-title"> <span class="text-logo margin-top-sm">A</span> <h2 class="title h4">回答</h2> </div> <div class="item-description text-md markdown-body margin-bottom-40 voidso"> <article class="board-top-1 padding-top-10"> <div class="post-col vote-info"> <span class="count">1<i class="fa fa-thumbs-up"></i></span> </div> <div class="post-offset"> <div class="answer fmt"> <p>的<code class="prettyprint-override">doc.children.each</code>塊輸出比多一點對我來說:</p> <pre> "\n\n \n\n " "\n\n " "\n\n " "\n\n " "\n\n " "\n\n " "\n\n " "\n\n " "\n\n \n\n " "\n\n \n" </pre> <p>這是正確的輸出;這些是<code class="prettyprint-override"><html></code>的直接子節點的文本節點。</p> <p>我不確定你沒有看到你想要的「行」。如果,例如,你想要的<code class="prettyprint-override"><pre></code>的內容,你可以做</p> <pre><code class="prettyprint-override">doc.xpath("pre").text </code></pre> <p>得到它。如果這不能爲你回答問題,你必須澄清你的問題。</p> </div> <div class="post-info"> <div class="post-meta row"> <p class="text-secondary col-lg-6"> <span class="source"> <a rel="noopener" target="_blank" href="https://stackoverflow.com/q/16002944">來源</a> </span> </p> <p class="text-secondary col-lg-6"> <span class="float-right date"> <span>2013-04-14 18:47:35</span> </p> <p class="col-12"></p> <p class="col-12"></p></div> </div> </div> </article> <div> <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-6208739752673518" data-ad-slot="1038284119" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </div> </div> <div class="clearfix"> </div> <div class="relative-box"> <div class="relative">相關問題</div> <ul class="relative_list"> <li> 1. <a href="http://hk.uwenku.com/question/p-sybnvmqj-bhc.html" target="_blank" title="將Nokogiri輸出寫入文本文件"> 將Nokogiri輸出寫入文本文件 </a> </li> <li> 2. <a href="http://hk.uwenku.com/question/p-ywnlhehg-su.html" target="_blank" title="引入nokogiri +通過文本"> 引入nokogiri +通過文本 </a> </li> <li> 3. <a href="http://hk.uwenku.com/question/p-tezbighw-bez.html" target="_blank" title="文件輸入/輸出混淆"> 文件輸入/輸出混淆 </a> </li> <li> 4. <a href="http://hk.uwenku.com/question/p-qmubpcve-wa.html" target="_blank" title="插入文本中引入nokogiri"> 插入文本中引入nokogiri </a> </li> <li> 5. <a href="http://hk.uwenku.com/question/p-pgtnezaq-km.html" target="_blank" title="引入nokogiri和XML - 抓鬥「TR」 XML包含特定文本"> 引入nokogiri和XML - 抓鬥「TR」 XML包含特定文本 </a> </li> <li> 6. <a href="http://hk.uwenku.com/question/p-cjbasffo-bkq.html" target="_blank" title="Java輸入/輸出混淆"> Java輸入/輸出混淆 </a> </li> <li> 7. <a href="http://hk.uwenku.com/question/p-qzvoxcde-zc.html" target="_blank" title="HTML文本混淆器"> HTML文本混淆器 </a> </li> <li> 8. <a href="http://hk.uwenku.com/question/p-cqkganrb-vh.html" target="_blank" title="在PERL中混淆文本"> 在PERL中混淆文本 </a> </li> <li> 9. <a href="http://hk.uwenku.com/question/p-sixhsfay-rc.html" target="_blank" title="腳本引擎和混淆"> 腳本引擎和混淆 </a> </li> <li> 10. <a href="http://hk.uwenku.com/question/p-cslcyyhf-tm.html" target="_blank" title="如何用Selenium和Nokogiri將文本輸入到文本框中?"> 如何用Selenium和Nokogiri將文本輸入到文本框中? 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