selenium.common.exceptions.InvalidSessionIdException通过Python在无头模式下使用GeckoDriver Selenium Firefox

Question

我试图使用python和selenium在firefox无头模式下自动化一些情况。我想，我做了我需要的所有设置，但仍然没有初始化webdriver。

我的问题是在执行我的代码后大约30-60秒获得异常并且异常消息不清楚实际上消息部分为空。正如你在无头模式下运行的geckodriver.log firefox上看到的那样。

我使用Firefox 56.0.1，python 3.6，selenium 3.141.0。这是我的代码和日志;

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

关于我做错了什么的任何想法？谢谢！

Answer 1

此错误消息...

selenium.common.exceptions.InvalidSessionIdException: Message:

...暗示GeckoDriver无法启动/生成新的WebBrowsing会话，即Firefox浏览器会话。

根据日志消息，geckodriver版本号不再在启动时反映出来，因此您必须使用：

GeckoDriver版本=> 0.22.0（2018-09-15）

但你正在使用：

• Selenium 3.141.0
• Firefox 56.0.1

因此，您的主要问题是您正在使用的GeckoDriver，Selenium和Firefox二进制文件版本之间的不兼容性。

---

解

如果您使用的是GeckoDriver-Selenium-Firefox组合，则需要遵循Supported platforms的以下兼容性图表：