Selenium webdriver无法在chrome下找到元素:// downloads [英] Selenium webdriver can't find elements at chrome://downloads
问题描述
我的问题是,当我尝试访问chrome下载页面上的元素时,硒给我一个错误(chrome: //下载)。
例如,我尝试获取文件URL http://file.jpg 。
< a id =urltarget =_ blankhref =http://file.jpg> http:/ /file.jpg</a>
但是,当我试图通过它的id获取元素时,我得到一个异常。
代码:
驱动程序= webdriver.Chrome(chromedriver.exe)
$例外:
driver.get(chrome:// downloads /)
file_url = driver.find_element_by_id(url)。get_attribute(href)
追踪(最近最后一次调用最后一次):$(pre
) b $ b文件< pyshell#34>,第3行,位于< module>
driver.find_element_by_id(url)
文件D:\Python\lib\site-packages\selenium\webdriver\remote\webdriver.py,第269行, in find_element_by_id
return self.find_element(by = By.ID,value = id_)
文件D:\Python\lib\site-packages\selenium\webdriver\remote\\ \\ webdriver.py,第752行,在find_element
'value'中:value})['value']
文件D:\Python\lib\site-packages\selenium\\ \\webdriver\remote\webdriver.py,第236行,执行
self.error_handler.check_response(响应)
文件D:\Python\lib\site-packages\ selenium\webdriver\remote\errorhandler.py,第192行,in check_response
raise exception_class(message,screen,stacktrace)
selenium.common.exceptions.NoSuchElementException:消息:no such element:无法找到元素:{method:id,selector:url}
(会话信息:chrome = 56.0.2924.87)
(驱动程序信息:chromedriver = 2.27.440174(e97a722caafc2d3a8b807ee115bfb307f7d2cfd9),platform = Windows NT 10.0.10586 x86_64)
使用javascript通过
driver.execute_script()
也不适用于我。
为什么当我在浏览器中看到元素时,我得到NoSuchElementException
?解决方案目标链接位于几个
shadow-root
块内。尝试下面的代码:
driver = webdriver.Chrome(chromedriver.exe)
driver.get(chrome :// downloads /)
manager = driver.find_element_by_css_selector('body / deep / downloads-manager')
item = manager.find_element_by_css_selector('body / deep / downloads-item' )
shadow = driver.execute_script('return arguments [0] .shadowRoot;',item)
link = shadow.find_element_by_css_selector('div#title-area> a')
file_url = link.get_attribute(href)
如有任何问题,请告知我。如果它解决了您的问题,请不要忘记将此答案标记为
接受
。I use selenium with the chromedriver in python.
My problem is that selenium gives me an error as i try to access elements on the chrome download page (chrome://downloads). For example i try to get the file url "http://file.jpg".
<a id="url" target="_blank" href="http://file.jpg">http://file.jpg</a>
But as i try to get the element by its id I get an exception.
Code:
driver = webdriver.Chrome("chromedriver.exe") driver.get("chrome://downloads/") file_url = driver.find_element_by_id("url").get_attribute("href")
Exception:
Traceback (most recent call last): File "<pyshell#34>", line 3, in <module> driver.find_element_by_id("url") File "D:\Python\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 269, in find_element_by_id return self.find_element(by=By.ID, value=id_) File "D:\Python\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 752, in find_element 'value': value})['value'] File "D:\Python\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 236, in execute self.error_handler.check_response(response) File "D:\Python\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 192, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"id","selector":"url"} (Session info: chrome=56.0.2924.87) (Driver info: chromedriver=2.27.440174 (e97a722caafc2d3a8b807ee115bfb307f7d2cfd9),platform=Windows NT 10.0.10586 x86_64)
Using javascript via
driver.execute_script()
didn't work for me either. Why am i getting aNoSuchElementException
when i can see the element in the browser?解决方案Target link located inside several
shadow-root
blocks. Try below code:driver = webdriver.Chrome("chromedriver.exe") driver.get("chrome://downloads/") manager = driver.find_element_by_css_selector('body/deep/downloads-manager') item = manager.find_element_by_css_selector('body/deep/downloads-item') shadow = driver.execute_script('return arguments[0].shadowRoot;', item) link = shadow.find_element_by_css_selector('div#title-area>a') file_url = link.get_attribute("href")
Let me know in case of any issues. Don't forget to mark this answer as
Accepted
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