【发布时间】：2019-05-13 08:54:13
【问题描述】：
我正在尝试使用 python 和 selenium 在 Firefox 无头模式下自动执行某些情况。我想，我做了所有我需要的设置，但仍然没有初始化 webdrvier。
我的问题是在执行我的代码后大约 30-60 秒出现异常，并且异常消息不清楚实际上消息部分是空的。正如您在以无头模式运行的 geckodriver.log firefox 所见。
我使用 Firefox 56.0.1、python 3.6、selenium 3.141.0。这是我的代码和日志；
代码：
import os
import time
import selenium
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary
from selenium.webdriver.firefox.firefox_profile import FirefoxProfile
options = Options()
options.set_headless(True)
dir = "C:\\Python36\\Lib\\site-packages\\selenium\\webdriver\\firefox"
ff_driver_path = dir + "\\geckodriver.exe"
firefox_capabilities = DesiredCapabilities().FIREFOX
firefox_capabilities['marionette'] = True
profile = webdriver.FirefoxProfile()
binary = FirefoxBinary('C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe')
driver = webdriver.Firefox(desired_capabilities=firefox_capabilities, firefox_profile=profile, firefox_binary=binary, firefox_options=options, executable_path=ff_driver_path)
driver.get("https://ipaddress/")
日志：
File "<string>", line 20, in <module>
File "C:\Python36\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 174, in __init__
keep_alive=True)
File "C:\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 157, in __init__
self.start_session(capabilities, browser_profile)
File "C:\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 252, in start_session
response = self.execute(Command.NEW_SESSION, parameters)
File "C:\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
self.error_handler.check_response(response)
File "C:\Python36\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.InvalidSessionIdException: Message:
geckodriver 日志：
1544600615819 mozrunner::runner INFO Running command: "C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe" "-marionette" "-headless" "-foreground" "-no-remote" "-profile" "C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\2\\rust_mozprofile.SDw8B2IEG5cE"
*** You are running in headless mode.
1544600616120 addons.xpi WARN Error parsing extensions state: [Exception... "Component returned failure code: 0x80520012 (NS_ERROR_FILE_NOT_FOUND) [amIAddonManagerStartup.readStartupData]" nsresult: "0x80520012 (NS_ERROR_FILE_NOT_FOUND)" location: "JS frame :: resource://gre/modules/addons/XPIProvider.jsm :: loadExtensionState :: line 1554" data: no] Stack trace: loadExtensionState()@resource://gre/modules/addons/XPIProvider.jsm:1554 < getInstallState()@resource://gre/modules/addons/XPIProvider.jsm:1589 < checkForChanges()@resource://gre/modules/addons/XPIProvider.jsm:3109 < startup()@resource://gre/modules/addons/XPIProvider.jsm:2188 < callProvider()@resource://gre/modules/AddonManager.jsm:269 < _startProvider()@resource://gre/modules/AddonManager.jsm:739 < startup()@resource://gre/modules/AddonManager.jsm:906 < startup()@resource://gre/modules/AddonManager.jsm:3090 < observe()@jar:file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/omni.ja!/components/addonManager.js:65
1544600616661 Marionette INFO Enabled via --marionette
[Child 2656] WARNING: pipe error: 109: file z:/build/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 346
[Child 2656] WARNING: pipe error: 109: file z:/build/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 346
1544600618075 Marionette INFO Listening on port 64093
JavaScript error: jar:file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/omni.ja!/components/captivedetect.js, line 352: TypeError: this._runningRequest is null
JavaScript error: jar:file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/omni.ja!/components/captivedetect.js, line 352: TypeError: this._runningRequest is null
JavaScript error: jar:file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/omni.ja!/components/captivedetect.js, line 352: TypeError: this._runningRequest is null
JavaScript error: jar:file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/omni.ja!/components/captivedetect.js, line 352: TypeError: this._runningRequest is null
JavaScript error: jar:file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/omni.ja!/components/captivedetect.js, line 352: TypeError: this._runningRequest is null
JavaScript error: jar:file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/omni.ja!/components/captivedetect.js, line 352: TypeError: this._runningRequest is null
关于我做错了什么有什么想法吗？谢谢！
【问题讨论】：
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这不是同一个问题。在那个问题上，问题的所有者将 firefox 设置为无头但仍将 firefox 作为带 head 的常规浏览器打开，但在我的情况下，没有带 head 的常规 firefox 浏览器。如果您可以查看我分享的 geckodriver.log，您会看到 Firefox 正在以无头模式运行。我的问题是在执行我的代码后大约 30-60 秒出现异常。
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您的评论清楚地表明它不是重复的，并且您的评论从未到达我的收件箱。继续前进，当您回复特定用户时，请在 usename 之前添加
@，以便将评论发送到特定用户的收件箱并提示。 重新开始讨论。很抱歉给您带来不便。
标签： python selenium geckodriver selenium-firefoxdriver firefox-headless