python - Selenium - 登录引发 ElementNotVisibleException

Question

我正在使用 Selenium Webdriver 登录网站。我尝试了多种不同的选择器，并尝试了隐式等待，但无法找到该元素。

    from selenium import webdriver
    from selenium.webdriver.common.by import By

    browser = webdriver.Firefox()
    url = "https://www.example.com"
    login_page = browser.get(url)

    username = browser.find_element_by_id("Email")
    # Also tried:
    # username = browser.find_element_by_xpath('//*[@id="Email"]')
    # username = browser.find_element_by_css_selector('#Email')
    username.send_keys("email")

这是html

<div class="form-group">
    <label for="Email">Email address</label>
    <div class="input-group" style="width: 100%">
        <input class="form-control email" data-val="true" data-val-length="Maximum length is 50" data-val-length-max="50" data-val-regex="Provided email address is not valid" data-val-regex-pattern="^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$" data-val-required="Email is required" id="Email" name="Email" type="email" value=""><br>
        <span class="field-validation-valid" data-valmsg-for="Email" data-valmsg-replace="true"></span>
    </div>
</div>

这是错误信息

Traceback (most recent call last):
  File "seleniumloginpi.py", line 12, in <module>
    email.send_keys('email')
  File "/Users/greg/anaconda/envs/trade/lib/python2.7/site-packages/selenium/webdriver/remote/webelement.py", line 320, in send_keys
    self._execute(Command.SEND_KEYS_TO_ELEMENT, {'value': keys_to_typing(value)})
  File "/Users/greg/anaconda/envs/trade/lib/python2.7/site-packages/selenium/webdriver/remote/webelement.py", line 461, in _execute
    return self._parent.execute(command, params)
  File "/Users/greg/anaconda/envs/trade/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 236, in execute
    self.error_handler.check_response(response)
  File "/Users/greg/anaconda/envs/trade/lib/python2.7/site-packages/selenium/webdriver/remote/errorhandler.py", line 192, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.ElementNotVisibleException: Message: Element is not currently visible and so may not be interacted with
Stacktrace:
    at fxdriver.preconditions.visible (file:///var/folders/2h/3nnr94wx0f9g9bjcl0ks_g1w0000gn/T/tmpfAR5E7/extensions/fxdriver@googlecode.com/components/command-processor.js:10092)
    at DelayedCommand.prototype.checkPreconditions_ (file:///var/folders/2h/3nnr94wx0f9g9bjcl0ks_g1w0000gn/T/tmpfAR5E7/extensions/fxdriver@googlecode.com/components/command-processor.js:12644)
    at DelayedCommand.prototype.executeInternal_/h (file:///var/folders/2h/3nnr94wx0f9g9bjcl0ks_g1w0000gn/T/tmpfAR5E7/extensions/fxdriver@googlecode.com/components/command-processor.js:12661)
    at DelayedCommand.prototype.executeInternal_ (file:///var/folders/2h/3nnr94wx0f9g9bjcl0ks_g1w0000gn/T/tmpfAR5E7/extensions/fxdriver@googlecode.com/components/command-processor.js:12666)
    at DelayedCommand.prototype.execute/< (file:///var/folders/2h/3nnr94wx0f9g9bjcl0ks_g1w0000gn/T/tmpfAR5E7/extensions/fxdriver@googlecode.com/components/command-processor.js:12608)

如有任何帮助，我们将不胜感激。

Answer 1

实际上您正在定位元素，send_keys 有问题，由于元素不可见，此处无法在电子邮件输入上设置值。但是正如我在提供的 HTML 中看到的那样，电子邮件输入元素上不存在可能使其不可见的样式属性。

可能有更多具有相同 id 的元素，并且您正在与其他元素交互，您应该尝试使用一些不同的定位器，如下所示:-

username = browser.find_element_by_css_selector('div.input-group input#Email.form-control.email')
username.send_keys("email") 

或者尝试找到所有具有 Id Email 的元素并在可见元素上执行 send_keys()，如下所示:

usernames = browser.find_elements_by_id('Email')

for username in usernames:
   if username.is_displayed():
        username.send_keys("email") 
        break