python - Selenium 不会加载完整的 DOM 树，只会加载页面源代码-6ren

python - Selenium 不会加载完整的 DOM 树，只会加载页面源代码

转载作者：行者123 更新时间：2023-12-04 17:30:37

我在 Stack Overflow 中尝试了几个答案。当我打印网页时，我只能看到与在 Chrome 中查看页面源代码等效的内容，而不是通过检查网页获得的完整 DOM 树。如您所见，我已经稍等片刻，但这并没有改变任何东西，我应该尝试使用 Firefox 而不是 Chrome 吗？

我尝试使用的网站是否有反抓取措施？我还能尝试什么？

def selenium_start(url):
  options = webdriver.ChromeOptions()
  options.add_argument('--headless')
  options.add_argument('--no-sandbox')
  options.add_argument('--disable-dev-shm-usage')
  driver = webdriver.Chrome('chromedriver',chrome_options=options)
  driver.get(url)
  try:
    driver = WebDriverWait(driver, 5).until\
    (EC.presence_of_element_located((By.ID, "koex")))
  except:
    print('Sorry!')
  return driver

webpage_driver = selenium_start('https://getbootstrap.com/docs/4.0/components/collapse/')

"""
div_container = webpage_driver.find_element(By.CLASS_NAME, 'maincontent')
html = webpage_driver.execute_script('return document.documentElement.outerHTML')
#inner_div = div_container.get_attribute('outerHTML')
"""

print(page_soup)

最佳答案

要提取页面源，您必须为webpage 中元素的visibility_of_element_located() 引入WebDriverWait您可以使用以下 Locator Strategies :

代码块:

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

options = webdriver.ChromeOptions() 
options.add_argument("start-maximized")
options.add_experimental_option("excludeSwitches", ["enable-automation"])
options.add_experimental_option('useAutomationExtension', False)
driver = webdriver.Chrome(options=options, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')
driver.get("https://getbootstrap.com/docs/4.0/components/collapse/")
WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.CSS_SELECTOR, "h1.bd-title")))
print(driver.page_source)
driver.quit()

控制台输出:

<html lang="en"><head>
    <meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="Toggle the visibility of content across your project with a few classes and our JavaScript plugins.">
<meta name="author" content="Mark Otto, Jacob Thornton, and Bootstrap contributors">
<meta name="generator" content="Jekyll v3.7.0">

<title>Collapse · Bootstrap</title>

<link rel="canonical" href="https://getbootstrap.com/docs/4.0/components/collapse/">

<!-- Bootstrap core CSS -->

<style class="anchorjs"></style><link href="/docs/4.0/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">


<!-- Documentation extras -->

<link href="https://cdn.jsdelivr.net/npm/docsearch.js@2/dist/cdn/docsearch.min.css" rel="stylesheet">

<link href="/docs/4.0/assets/css/docs.min.css" rel="stylesheet">

<!-- Favicons -->
<link rel="apple-touch-icon" href="/docs/4.0/assets/img/favicons/apple-touch-icon.png" sizes="180x180">
<link rel="icon" href="/docs/4.0/assets/img/favicons/favicon-32x32.png" sizes="32x32" type="image/png">
<link rel="icon" href="/docs/4.0/assets/img/favicons/favicon-16x16.png" sizes="16x16" type="image/png">
<link rel="manifest" href="/docs/4.0/assets/img/favicons/manifest.json">
<link rel="mask-icon" href="/docs/4.0/assets/img/favicons/safari-pinned-tab.svg" color="#563d7c">
<link rel="icon" href="/docs/4.0/assets/img/favicons/favicon.ico">
<meta name="msapplication-config" content="/docs/4.0/assets/img/favicons/browserconfig.xml">
<meta name="theme-color" content="#563d7c">


<!-- Twitter -->
<meta name="twitter:card" content="summary">
<meta name="twitter:site" content="@getbootstrap">
<meta name="twitter:creator" content="@getbootstrap">
<meta name="twitter:title" content="Collapse">
<meta name="twitter:description" content="Toggle the visibility of content across your project with a few classes and our JavaScript plugins.">
<meta name="twitter:image" content="https://getbootstrap.com/docs/4.0/assets/brand/bootstrap-social-logo.png">

<!-- Facebook -->
<meta property="og:url" content="https://getbootstrap.com/docs/4.0/components/collapse/">
<meta property="og:title" content="Collapse">
<meta property="og:description" content="Toggle the visibility of content across your project with a few classes and our JavaScript plugins.">
<meta property="og:type" content="website">
<meta property="og:image" content="http://getbootstrap.com/docs/4.0/assets/brand/bootstrap-social.png">
<meta property="og:image:secure_url" content="https://getbootstrap.com/docs/4.0/assets/brand/bootstrap-social.png">
<meta property="og:image:type" content="image/png">
<meta property="og:image:width" content="1200">
<meta property="og:image:height" content="630">


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  <button class="btn btn-link bd-search-docs-toggle d-md-none p-0 ml-3" type="button" data-toggle="collapse" data-target="#bd-docs-nav" aria-controls="bd-docs-nav" aria-expanded="false" aria-label="Toggle docs navigation"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 30 30" width="30" height="30" focusable="false"><title>Menu</title><path stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-miterlimit="10" d="M4 7h22M4 15h22M4 23h22"></path></svg>
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<div class="bd-example">
<div id="accordion">
  <div class="card">
    <div class="card-header" id="headingOne">
      <h5 class="mb-0">
    <button class="btn btn-link" data-toggle="collapse" data-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
      Collapsible Group Item #1
    </button>
      </h5>
    </div>

    <div id="collapseOne" class="collapse show" aria-labelledby="headingOne" data-parent="#accordion">
      <div class="card-body">
    Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
      </div>
    </div>
  </div>
  <div class="card">
    <div class="card-header" id="headingTwo">
      <h5 class="mb-0">
    <button class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
      Collapsible Group Item #2
    </button>
      </h5>
    </div>
    <div id="collapseTwo" class="collapse" aria-labelledby="headingTwo" data-parent="#accordion">
      <div class="card-body">
    Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
      </div>
    </div>
  </div>
  <div class="card">
    <div class="card-header" id="headingThree">
      <h5 class="mb-0">
    <button class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
      Collapsible Group Item #3
    </button>
      </h5>
    </div>
.       
<table class="table table-bordered table-striped">
  <thead>
    <tr>
      <th style="width: 100px;">Name</th>
      <th style="width: 50px;">Type</th>
      <th style="width: 50px;">Default</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>parent</td>
      <td>selector | jQuery object | DOM element </td>
      <td>false</td>
      <td>If parent is provided, then all collapsible elements under the specified parent will be closed when this collapsible item is shown. (similar to traditional accordion behavior - this is dependent on the <code>card</code> class). The attribute has to be set on the target collapsible area.</td>
    </tr>
    <tr>
      <td>toggle</td>
      <td>boolean</td>
      <td>true</td>
      <td>Toggles the collapsible element on invocation</td>
    </tr>
  </tbody>
</table>
.
<table class="table table-bordered table-striped">
  <thead>
    <tr>
      <th style="width: 150px;">Event Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>show.bs.collapse</td>
      <td>This event fires immediately when the <code>show</code> instance method is called.</td>
    </tr>
    <tr>
      <td>shown.bs.collapse</td>
      <td>This event is fired when a collapse element has been made visible to the user (will wait for CSS transitions to complete).</td>
    </tr>
    <tr>
      <td>hide.bs.collapse</td>
      <td>This event is fired immediately when the <code>hide</code> method has been called.</td>
    </tr>
    <tr>
      <td>hidden.bs.collapse</td>
      <td>This event is fired when a collapse element has been hidden from the user (will wait for CSS transitions to complete).</td>
    </tr>
  </tbody>
</table>

<div class="bd-clipboard"><button class="btn-clipboard" title="" data-original-title="Copy to clipboard">Copy</button></div><figure class="highlight"><pre><code class="language-js" data-lang="js"><span class="nx">$</span><span class="p">(</span><span class="s1">'#myCollapsible'</span><span class="p">).</span><span class="nx">on</span><span class="p">(</span><span class="s1">'hidden.bs.collapse'</span><span class="p">,</span> <span class="kd">function</span> <span class="p">()</span> <span class="p">{</span>
  <span class="c1">// do something…</span>
<span class="p">})</span></code></pre></figure>


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关于python - Selenium 不会加载完整的 DOM 树，只会加载页面源代码，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/60072138/

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selenium - selenium IDE中添加两个变量
我在一个变量中存储了一个值，在另一个变量中存储了第二个值，现在我想将这两个数字相加。我无法做到这一点，我尝试过下面的代码，但它不起作用 store 6 w sto
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Selenium 中的回车键和回车键有什么区别？ This related SO answer并且提供的链接说明它们是不同的。我还注意到，在使用 Firefox 24.2 时，回车键将发送一个 HTM
selenium - 如何使用 Selenium 3 设置 Selenium Grid
以下是我遇到异常的详细信息: 当我使用以下命令启动节点时，出现如下错误: F:\SeleniumGrid\Jars>java -jar selenium-server-standalone-3.0.0
selenium - 是否有 Selenium 2 版本的 Selenium IDE？
我是的新手 Selenium 我对版本号有点困惑。 Selenium 2.0 2011年发布。我刚刚下载了 Selenium IDE Firefox 扩展，版本为 1.7.2 .是否还有 IDE 的
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我正在使用 Selenium 运行Codeception 2。我可以看到 Selenium 打开了浏览器并运行了测试。然后，我从代码接收中得到一个错误，即存在失败的断言。我知道有一个HTML文件可以
selenium - Selenium 3的新功能是什么
Closed. This question needs to be more focused。它当前不接受答案。想要改善这个问题吗？更新问题，使它仅关注editing this post的一个问题。
selenium - Selenium 运行中如何关闭弹出窗口？
我想关闭弹出窗口(已知的窗口名称)，然后返回到原始窗口。我该怎么办？如果我无法获得窗口中关闭按钮的常量。那么有没有达到目标的一般行为？最佳答案你有没有尝试过: selenium.Close()
selenium - 错误后如何继续使用webdriver/selenium
我正在用webdriver做一个测试机器人。我有一个场景，它单击一个按钮，打开一个新窗口，并且它通过特定的xpath搜索元素，但是有时没有这样的元素，因为可以将其禁用，并且出现此错误：org.open
selenium - Selenium :如何等待选择中的选项被填充？
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selenium-webdriver - 如何在运行 Selenium Selenium nightwatch.js测试时保持打开的开发人员工具？
我开始使用nightwatch.js编写e2e测试，我注意到我想在目标浏览器的控制台（开发人员工具）中手动检查一些错误。但总是在我打开开发者控制台时，浏览器会自动关闭它。这是selenium还是nig
selenium - Selenium 没有这种元素异常
我正在尝试使用以下方式刮除Glassdoor的评论: https://github.com/MatthewChatham/glassdoor-review-scraper 但是我得到了错误并且不知道如
selenium - Selenium Grid总是执行我的测试的多余实例
背景我设置了一个Selenium Grid项目，以在两种不同的浏览器Chrome和Firefox中执行测试。我正在使用Gradle执行测试。该测试将成功执行两次，一次按预期在Chrome中执行，一次
selenium - 使用 phpunit/selenium 保持 selenium 浏览器打开
当测试失败时，运行 selenium 测试的浏览器将关闭。这在尝试调试时没有帮助。我知道我可以在失败时选择屏幕截图，但如果没有整个上下文，这并没有帮助。在浏览器仍然可用的情况下，我可以回击并检查发生了
selenium - 使用 Selenium Web 驱动程序或 selenium RC
使用 Selenium Web 驱动程序而不是 Selenium RC 启动新的测试框架是个好主意吗？对于 Selenium Web 驱动程序，并非所有 Selenium 方法都已实现。那么使用 Se
selenium - Selenium 标识符的建议命名约定
我使用 selenium 页面对象模型来定义所有页面元素。我对元素命名所遵循的命名约定不太相信，并且感觉太长了。请对此提出建议。 @FindBy(xpath = "//tbody[@id='tabvi
selenium - 等待处理程序注册 - selenium
有一个带有按钮的 html 页面，我的 Selenium 测试正在测试，当单击按钮时，会执行一个操作。问题是，看起来点击发生在 javascript 执行之前 - 在处理程序绑定(bind)到页面之

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python - Selenium 不会加载完整的 DOM 树，只会加载页面源代码