我想在Selenium中截取一个元素,根据该文档,每个WebElement都有一个函数:
截图(文件名)
将当前元素的屏幕截图保存到PNG图像文件中。返回 如果存在任何IOError则返回false,否则返回True。使用文件名中的完整路径。
参数数量: filename:您希望将屏幕截图保存到的完整路径。这应该以.png扩展名结尾
使用方法: element.screenshot(“/截图/ foo.png”)
但是,当我在我的程序中使用此功能时:
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from time import sleep
url='http://www.google.com'
browser = webdriver.Chrome()
browser.get(url)
content = browser.find_element_by_id('searchform')
content.screenshot('/home/ding/Pictures/shot.png')
它会引发这样的错误:
Traceback (most recent call last):
File "<ipython-input-8-309cb404878d>", line 11, in <module>
content.screenshot('/home/ding/Pictures/shot.png')
File "/home/ding/anaconda3/lib/python3.6/site-packages/selenium/webdriver/remote/webelement.py", line 453, in screenshot
png = self.screenshot_as_png
File "/home/ding/anaconda3/lib/python3.6/site-packages/selenium/webdriver/remote/webelement.py", line 435, in screenshot_as_png
return base64.b64decode(self.screenshot_as_base64.encode('ascii'))
File "/home/ding/anaconda3/lib/python3.6/site-packages/selenium/webdriver/remote/webelement.py", line 425, in screenshot_as_base64
return self._execute(Command.ELEMENT_SCREENSHOT)['value']
File "/home/ding/anaconda3/lib/python3.6/site-packages/selenium/webdriver/remote/webelement.py", line 501, in _execute
return self._parent.execute(command, params)
File "/home/ding/anaconda3/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 308, in execute
self.error_handler.check_response(response)
File "/home/ding/anaconda3/lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py", line 165, in check_response
raise exception_class(value)
WebDriverException: unknown command: session/efbca24571c5332230f4d032ae04787c/element/0.7487814861441955-1/screenshot
我如何解决这个问题,并在Python中使用Selenium截取元素的截图?
答案 0 :(得分:0)
您需要使用screenshot
方法替换save_screenshot
。所以
而不是:
content.screenshot('/home/ding/Pictures/shot.png')
使用:
content.save_screenshot('/home/ding/Pictures/shot.png')
答案 1 :(得分:0)
此代码非常适合在Firefox浏览器中拍摄特定元素的屏幕截图。
K^{M - L}
答案 2 :(得分:0)
导入额外的库来编写文件对我来说似乎很愚蠢......
使用内置的 open
:
button_element = self._driver.find_element_by_class_name("a-button-input")
with open("element.png", "wb") as elem_file:
elem_file.write(button_element.screenshot_as_png)
亚马逊元素输出:
答案 3 :(得分:-1)
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from time import sleep
url="http://www.google.com"
browser = webdriver.Chrome("c:\chrome\chromedriver.exe")
browser.get(url)
browser.find_element_by_id('searchform')
browser.save_screenshot("C://Demo//shot.png")