如何让Nokogiri显示节点而不只是HTML

时间：2019-03-14 13:10:59

标签： ruby nokogiri

现在，当我解析一些html（例如黑客新闻的首页）时，它可以正常工作。我可以在doc = Nokogiri::HTML(open('news.ycombinator.com'))之类的地方打电话给我，我会回来的Nokogiri::HTML::Document < Nokogiri::XML::Document

问题是，在终端中，我看到的是HTML，而不是实际的Nokogiri元素。我希望看到它，因为它向我显示了诸如Nokogiri Elements Children之类的有价值的信息，或一系列链接or或or。

我使用Watir Gem通过以下方法获取HTML：

[1] pry(main)> browser = Watir::Browser.new(:firefox)
#<Watir::Browser:0x2c5654b29ef00c22 url="about:blank" title="">
[2] pry(main)> browser.goto('news.ycombinator.com')
"http://news.ycombinator.com"
[3] pry(main)> browser.html

browser.html是包含未解析的HTML的实例变量（我认为吗？）。

如果我打doc = Nokogiri::HTML.parse(browser.html)

，这就是我现在返回的内容

enter image description here

这就是我想要回来的东西：

enter image description here

我要去哪里错了？

根据要求添加原始代码：

Nokogiri::HTML::Document < Nokogiri::XML::Document
[31] pry(main)> doc = Nokogiri::HTML.parse(browser.html)
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html op="news">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="referrer" content="origin">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="news.css?stXbi7LCyutClfTUMe1b">
            <link rel="shortcut icon" href="favicon.ico">
          <link rel="alternate" type="application/rss+xml" title="RSS" href="rss">
        <title>Hacker News</title>
</head>
<body>
<center><table id="hnmain" width="85%" cellspacing="0" cellpadding="0" border="0" bgcolor="#f6f6ef">
        <tbody>
<tr><td bgcolor="#ff6600"><table style="padding:2px" width="100%" cellspacing="0" cellpadding="0" border="0"><tbody><tr>
<td style="width:18px;padding-right:4px"><a href="https://news.ycombinator.com"><img src="y18.gif" style="border:1px white solid;" width="18" height="18"></a></td>
                  <td style="line-height:12pt; height:10px;"><span class="pagetop"><b class="hnname"><a href="news">Hacker News</a></b>
              <a href="newest">new</a> | <a href="front">past</a> | <a href="newcomments">comments</a> | <a href="ask">ask</a> | <a href="show">show</a> | <a href="jobs">jobs</a> | <a href="submit">submit</a>            </span></td>
<td style="text-align:right;padding-right:4px;"><span class="pagetop">
                              <a href="login?goto=news">login</a>
                          </span></td>
              </tr></tbody></table></td></tr>
<tr id="pagespace" title="" style="height:10px"></tr>
<tr><td>
<table class="itemlist" cellspacing="0" cellpadding="0" border="0">
              <tbody>
<tr class="athing" id="19388248">
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<td class="title">
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</td>
</tr>
<tr>
<td colspan="2"></td>
<td class="subtext">
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</tr>
      <tr class="spacer" style="height:5px"></tr>
                <tr class="athing" id="19384878">
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</td>
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<td class="subtext">
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</tr>
      <tr class="spacer" style="height:5px"></tr>
                <tr class="athing" id="19388091">
      <td class="title" valign="top" align="right"><span class="rank">3.</span></td>      <td class="votelinks" valign="top"><center><a id="up_19388091" href="vote?id=19388091&amp;how=up&amp;goto=news"><div class="votearrow" title="upvote"></div></a></center></td>
<td class="title">
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...

1 个答案:

答案 0 :(得分：0)

听起来像您想要的

doc = Nokogiri::HTML browser.html
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