找不到Xpath元素

Question

您好，我对selenium是个新手。如果我在下面遇到错误，请有人建议如何在iframe中定位和元素

我试图在Salesforce Pardot页面上实现一个自动化脚本，有两个iframe，我想访问第一个iframe标签上的按钮并单击相同的按钮

Error:- selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//*[starts-with(@class,'slds-button_reset')]"} (Session info: chrome=80.0.3987.122)

Screenshot for DOM Button Element

Screenshot for DOM Button Element along with Iframe tag

以前编写的代码

from selenium import webdriver
chrome_options = webdriver.ChromeOptions()
prefs = {'download.default_directory': r'C:\Pardot'}
chrome_options.add_experimental_option('prefs', prefs)
driver = webdriver.Chrome(executable_path="D:\XXX XXXX\XXXX\drivers\chromedriver.exe", options=chrome_options)
driver.get('https://pi.pardot.com/engagementStudio/studio#/15627/reporting')
user_name = driver.find_element_by_css_selector('#email_address')
user_name.send_keys('XXXXXXXXXXXXXXXXXXX')
password = driver.find_element_by_css_selector('#password')
password.send_keys('XXXXXXXXXXXXXXXXX)
submit_button = driver.find_element_by_css_selector('input.btn')
submit_button.click()
iframe_list =  driver.find_elements_by_tag_name("iframe")
driver.switch_to.frame(iframe_list[0])
driver.find_element_by_xpath("//*[starts-with(@class,'slds-button_reset')]")
driver.close()

Answer 1

试试这个： //李[@id='ember943']

Answer 2

由于所需元素位于<iframe>内，因此要在元素上调用click()，您必须：

• 为所需的frame_to_be_available_and_switch_to_it()诱导WebDriverWait
• 为所需的element_to_be_clickable()诱导WebDriverWait

• 您可以使用以下任一Locator Strategies：

  • 使用CSS_SELECTOR：

    WebDriverWait(driver, 10).until(EC.frame_to_be_available_and_switch_to_it((By.CSS_SELECTOR,"iframe#content-frame")))
    WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "button[data-qa='reporting-filter-trigger-toggle'][data-ember-action]"))).click()
    

  • 使用XPATH：

    WebDriverWait(driver, 10).until(EC.frame_to_be_available_and_switch_to_it((By.XPATH,"//iframe[@id='content-frame']")))
    WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//button[@data-qa='reporting-filter-trigger-toggle' and @data-ember-action]"))).click()
    

• 注意：您必须添加以下导入：

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

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参考文献

您可以在以下内容中找到一些相关讨论：

• Selenium “selenium.common.exceptions.NoSuchElementException” when using Chrome
• Ways to deal with #document under iframe

Answer 3

您需要首先获得iframe标记，并将驱动程序切换到它，如下所示

driver.switch_to.frame(driver.find_element_by_tag_name("iframe")) 假设驱动程序是webdriver的健康实例。要继续使用默认内容，请执行以下操作： driver.switch_to.default_content()

请参阅this link