Python Selenium Webdriver:查找#document元素 [英] Python Selenium Webdriver: finding #document element
问题描述
我一直在使用Python的Selenium Webdriver通过此HTML代码获取元素. 但是，我无法访问此#document标记内的任何元素.
I have been using Python's Selenium Webdriver getting elements with this HTML code. However, I could not access any of the elements inside this #document tag.
我都用过
driver.find_element_by_xpath("html/body/div[@id='frame']/iframe/*")，我尝试了
elem = driver.find_element_by_tag("iframe")，后跟
elem.find_element_by_xpath寻找内部元素，但失败了.
I used both
driver.find_element_by_xpath("html/body/div[@id='frame']/iframe/*"), and I tried
elem = driver.find_element_by_tag("iframe"), following by
elem.find_element_by_xpath to find inner elements but failed.
我还尝试使用driver.switch_to_frame(driver.find_element_by_tag("iframe"))，以查找内部元素，但是它也没有用.
I also tried to do driver.switch_to_frame(driver.find_element_by_tag("iframe")), following with xpath expressions to find inner elements, but it also did not work.
框架:
<div>
<iframe>
#document
<html>
<body>
<div>
....
</div>
</body>
</html>
</iframe>
</div>
推荐答案
切换到iframe，然后使用常规查询方法是正确的使用方法.我在整个大型测试套件中都成功使用了它.
Switching to the iframe and then using the normal query methods is the correct approach to use. I use it successfully throughout a large test suite.
请注意，在iframe中完成内部工作后，请切换回默认内容.
Remember to switch back to the default content when you've finished working inside the iframe though.
现在，解决您的问题.您如何投放iframe的内容?您是否刚刚编写了html并将其保存到文件中?或者您正在查看示例站点.您可能会发现iframe实际上没有包含您期望的内容.试试这个.
Now, to solve your problem. How are you serving the contents of the iframe? Have you literally just written the html and saved it to a file or are you looking at an example site. You might find that the iframe doesn't actually contain the content you expect. Try this.
from selenium.webdriver import Firefox
b = Firefox()
b.get('localhost:8000') # or wherever you are serving this html from
iframe = b.find_element_by_css_selector('iframe')
b.switch_to_frame(iframe)
print b.page_source
这将是iframe中的html.内容是您所期望的吗?还是主要是空的.如果为空，那么我怀疑是因为您需要分别提供iframe的内容.
That will be the html inside the iframe. Is the contents what you expect? Or is it mainly empty. If it's empty then I suspect it's because you need to serve the contents of the iframe separately.
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