python - Selenium Chrome 看不到浏览器日志 InvalidArgumentException

Question

我正在尝试获取 HTTP 状态码 用 Python 用 selenium webdriver 打开一个网站后，我看到了 HTTP 状态码 不可能，所以唯一的方法是获取网络日志并获取 HTTP 状态码 从那里

所以我试图用 selenium 打印日志，但它给了我一个 InvalidArgumentException

from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

# enable browser logging
d = DesiredCapabilities.CHROME
d['loggingPrefs'] = { 'performance':'ALL' }

driver = webdriver.Chrome(desired_capabilities=d)

# load the desired webpage
driver.get('http://foo.com')

# print messages
for entry in driver.get_log('performance'):
    print(entry)

这是运行后的错误

InvalidArgumentException                  Traceback (most recent call last)
<ipython-input-13-8480733201dc> in <module>
     12 
     13 # print messages
---> 14 for entry in driver.get_log('performance'):
     15     print(entry)

c:\users\slimshady\appdata\local\programs\python\python37-32\lib\site-packages\selenium\webdriver\remote\webdriver.py in get_log(self, log_type)
   1260             driver.get_log('server')
   1261         """
-> 1262         return self.execute(Command.GET_LOG, {'type': log_type})['value']

c:\users\slimshady\appdata\local\programs\python\python37-32\lib\site-packages\selenium\webdriver\remote\webdriver.py in execute(self, driver_command, params)
    319         response = self.command_executor.execute(driver_command, params)
    320         if response:
--> 321             self.error_handler.check_response(response)
    322             response['value'] = self._unwrap_value(
    323                 response.get('value', None))

c:\users\slimshady\appdata\local\programs\python\python37-32\lib\site-packages\selenium\webdriver\remote\errorhandler.py in check_response(self, response)
    240                 alert_text = value['alert'].get('text')
    241             raise exception_class(message, screen, stacktrace, alert_text)
--> 242         raise exception_class(message, screen, stacktrace)
    243 
    244     def _value_or_default(self, obj, key, default):

InvalidArgumentException: Message: invalid argument: log type 'performance' not found
  (Session info: chrome=75.0.3770.80)

我在这里可能做错了什么？

Answer 1

如 release notes 中所述适用于 Chrome 驱动程序 75，功能 loggingPrefs已更名为 goog:loggingPrefs ，按照 W3C 标准的要求。因此，应该调整设置功能的代码，至少由于日志捕获原因，没有必要退回到非 w3c 模式。

d['goog:loggingPrefs'] = { 'performance':'ALL' }