硒:找不到元素 [英] Selenium: Can't locate element

问题描述

我正在尝试切换到框架，但Selenium无法找到该元素.这是我在定位之前通过Selenium获得的HTML代码:

I am trying to switch to frame but Selenium can't locate the element. Here is HTML code which I get with Selenium before locating:

<div class="jqmPopOverlay" style="height: 100%; width: 100%; position: fixed; left: 0px; top: 0px; z-index: 2999; opacity: 0.7;"></div><div class="login login-main jqmID1" id="loginForm" style="z-index: 3000; top: 0px; left: 319.5px; display: block;">
<div class="titlebar">
<a class="close" href="#" tabindex="7">✕</a>
</div>
<div class="tooltipstered" id="loginFrame"><iframe frameborder="0" id="easyXDM_default127_provider" name="easyXDM_default127_provider" scrolling="no" style="height: 509.667px;" width="100%"></iframe></div>
</div>
<script async="" defer="" type="text/javascript">undefined</script><script async="" src="//www.googleadservices.com/pagead/conversion_async.js" type="text/javascript"></script><script async="" src="https://www.google-analytics.com/plugins/ua/ec.js" type="text/javascript"></script><script async="" src="https://www.google-analytics.com/analytics.js" type="text/javascript"></script><script async="" src="//www.googletagmanager.com/gtm.js?id=GTM-4DBM"></script><script type="text/javascript">     

这是Python代码:

Here is Python code:

browser = webdriver.Chrome('chromedriver.exe') 
browser.get(url)
frame = browser.find_element_by_id("easyXDM_default6255_provider")
browser.switch_to_frame(frame)

这是错误:

NoSuchElementException: Message: no such element: Unable to locate element: {"method":"id","selector":"easyXDM_default6255_provider"}
  (Session info: chrome=67.0.3396.99)
  (Driver info: chromedriver=2.40.565498 (ea082db3280dd6843ebfb08a625e3eb905c4f5ab),platform=Windows NT 10.0.17134 x86_64)

如您所见，HTML中有该元素，但找不到该元素.我在做什么错了?

As you can see there is the element in HTML, but it can't be located. What am I doing wrong?

推荐答案

尝试一下:

browser = webdriver.Chrome('chromedriver.exe') 
browser.get(url)
WebDriverWait(browser, 10).until(EC.frame_to_be_available_and_switch_to_it((By.XPATH, "//*[@id = 'loginFrame']/iframe")))

注意: ，您必须添加一些导入:

Note: you have to add some imports:

from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.wait import WebDriverWait

首先，您的框架可能具有通用ID和名称.这就是为什么我提出了另一个选择器.其次，我添加了 WebDriverWait ，它会等待至少10秒钟，直到帧可用，然后才切换到该帧.

Firstly, your frame probably has generic id and name. That's why I have proposed another selector. Secondly I have added WebDriverWait, which waits at least 10 seconds until frame will be available and only then switches to it.

PS: 当您完成iframe中的内容处理后，请不要忘记切换到以下默认内容:

PS: when you are done with content inside iframe, don't forget to switch to default content like this:

browser.switch_to.default_content()

否则，您将无法与整个DOM交互.

otherwise you will be not able to interact with the whole DOM.

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