如何使用 Selenium 和 Python 单击侧栏标签内的按钮

Question

我正在尝试单击侧边栏标签内的按钮：

<span class="sidebar-label">
    Exportar Listagem
</span>

这是我的代码：

driver.get("https://ispot2.faturaiqos.pt")
html = driver.page_source
exp = driver.find_element_by_link_text("Exportar Listagem")
exp.click()

这是我得到的错误：

Traceback (most recent call last):
File "/home/pi/Desktop/Python Testes/Ispot JP.py", line 25, in <module>
exp = driver.find_element_by_link_text("Exportar Listagem")
File "/usr/local/lib/python3.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 317, in find_element_by_link_text
return self.find_element(by=By.LINK_TEXT, value=link_text)
File "/usr/local/lib/python3.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 745, in find_element
{'using': by, 'value': value})['value']
File "/usr/local/lib/python3.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 236, in execute
self.error_handler.check_response(response)
File "/usr/local/lib/python3.7/dist-packages/selenium/webdriver/remote/errorhandler.py", line 194, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"link text","selector":"Exportar Listagem"}
(Session info: chrome=84.0.4147.141)
(Driver info: chromedriver=84.0.4147.141 (80c974bf7990b9735a8e885046fc5c9b1da4796c-refs/branch-heads/4147@{#1132}),platform=Linux 5.4.79-v7+ armv7l)

Answer 1

要单击文本为 Exportar Listagem 的元素，您可以使用以下Locator Strategies：

• 使用 xpath 和 contains():

  driver.find_element_by_xpath("//span[@class='sidebar-label' and contains(., 'Exportar Listagem')]").click()
  

• 使用 xpath 和 normalize-space():

  driver.find_element_by_xpath("//span[@class='sidebar-label' and normalize-space()='Exportar Listagem']").click()
  

---

理想情况下，点击您需要为WebDriverWait 诱导element_to_be_clickable() 的元素，您可以使用以下任一Locator Strategies：

• 使用 xpath 和 contains():

  WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//span[@class='sidebar-label' and contains(., 'Exportar Listagem')]"))).click()
  

• 使用 xpath 和 normalize-space():

  WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//span[@class='sidebar-label' and normalize-space()='Exportar Listagem']"))).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