Python Selenium无法连接Edge调试浏览器问题求助

问题描述 #

我尝试用Python脚本连接通过命令提示符以调试模式启动的Edge浏览器，但无法连接到127.0.0.1:9222，尝试多种方案仍未解决。

启动Edge的调试命令 #

"c:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --remote-debugging-port=9222

我的Python脚本 #

from selenium import webdriver
from selenium.webdriver.edge.options import Options

edge_options = Options()
edge_options.add_experimental_option('debuggerAddress', '127.0.0.1:9222')

driver = webdriver.Edge(options=edge_options)
driver.get(youtube.com)
printf(driver.title)

错误信息 #

核心错误片段：

raise exception_class(message, screen, stacktrace) selenium.common.exceptions.WebDriverException: Message: unknown error: cannot connect to microsoft edge at 127.0.0.1:9222 **from chrome not reachable **

完整错误栈：

Traceback (most recent call last):
  File "C:\Users\user\OneDrive\Plocha\záložky\msedge - running\Try 18.py", line 7, in <module>
    driver = webdriver.Edge(options=edge_options)
  File "C:\Users\user\AppData\Roaming\Python\Python310\site-packages\selenium\webdriver\edge\webdriver.py", line 73, in __init__
    super().__init__(
  File "C:\Users\user\AppData\Roaming\Python\Python310\site-packages\selenium\webdriver\chromium\webdriver.py", line 104, in __init__
    super().__init__(
  File "C:\Users\user\AppData\Roaming\Python\Python310\site-packages\selenium\webdriver\remote\webdriver.py", line 286, in __init__
    self.start_session(capabilities, browser_profile)
  File "C:\Users\user\AppData\Roaming\Python\Python310\site-packages\selenium\webdriver\remote\webdriver.py", line 378, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "C:\Users\user\AppData\Roaming\Python\Python310\site-packages\selenium\webdriver\remote\webdriver.py", line 440, in execute
    self.error_handler.check_response(response)
  File "C:\Users\user\AppData\Roaming\Python\Python310\site-packages\selenium\webdriver\remote\errorhandler.py", line 245, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: cannot connect to microsoft edge at 127.0.0.1:9222
from chrome not reachable
Stacktrace:
Backtrace:
    Microsoft::Applications::Events::EventProperties::SetProperty [0x00007FF72EE616C2+15186]
    Microsoft::Applications::Events::EventProperty::EventProperty [0x00007FF72EDFA212+827554]
    (No symbol) [0x00007FF72EABEBF3]
    (No symbol) [0x00007FF72EAAEC8A]
    (No symbol) [0x00007FF72EAF013D]
    (No symbol) [0x00007FF72EAE5D4A]
    (No symbol) [0x00007FF72EB29C56]
    (No symbol) [0x00007FF72EB21D23]
    (No symbol) [0x00007FF72EAF3B80]
    (No symbol) [0x00007FF72EAF2B0E]
    (No symbol) [0x00007FF72EAF4344]
    Microsoft::Applications::Events::EventProperties::SetProperty [0x00007FF72ECDC3B0+182752]
    (No symbol) [0x00007FF72EBB0095]
    Microsoft::Applications::Events::EventProperty::EventProperty [0x00007FF72ED3A6EA+42362]
    Microsoft::Applications::Events::EventProperty::EventProperty [0x00007FF72ED3D425+53941]
    Microsoft::Applications::Events::ILogManager::DispatchEventBroadcast [0x00007FF72F058AB3+1456595]
    Microsoft::Applications::Events::EventProperty::EventProperty [0x00007FF72EE0276A+861690]
    Microsoft::Applications::Events::EventProperty::EventProperty [0x00007FF72EE07854+882404]
    Microsoft::Applications::Events::EventProperty::EventProperty [0x00007FF72EE079AC+882748]
    Microsoft::Applications::Events::EventProperty::EventProperty [0x00007FF72EE1097E+919566]
    BaseThreadInitThunk [0x00007FF8D3C726BD+29]
    RtlUserThreadStart [0x00007FF8D5A6DFB8+40]

我已经尝试过多个教程和资源，但均未解决问题。

解决方案 #

1. 彻底关闭Edge后再启动调试模式 #

打开任务管理器，结束所有msedge.exe进程，再重新运行调试启动命令。残留的Edge进程会导致端口冲突或会话异常。

2. 严格匹配Edge与EdgeDriver版本 #

• 打开Edge，进入「设置→关于Microsoft Edge」查看浏览器版本号
• 下载对应版本的EdgeDriver，将其放置在Python环境的PATH目录下，或在代码中指定路径：

  from selenium.webdriver.edge.service import Service
  from selenium import webdriver
  from selenium.webdriver.edge.options import Options
  
  edge_options = Options()
  edge_options.add_experimental_option('debuggerAddress', '127.0.0.1:9222')
  
  # 指定EdgeDriver路径
  service = Service(r'C:\path\to\msedgedriver.exe')
  driver = webdriver.Edge(service=service, options=edge_options)
  

3. 修改Edge启动命令，添加必要参数 #

使用独立的用户数据目录，避免与默认浏览器会话冲突：

"c:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --remote-debugging-port=9222 --user-data-dir="C:\Temp\EdgeDebugProfile" --no-first-run --no-default-browser-check

--user-data-dir指定的目录会自动创建，确保路径有读写权限。

4. 修复Python脚本中的语法错误 #

• youtube.com需要加引号，改为"https://www.youtube.com"
• Python中没有printf函数，改为print
  修正后的脚本：

from selenium import webdriver
from selenium.webdriver.edge.options import Options
from selenium.webdriver.edge.service import Service

edge_options = Options()
edge_options.add_experimental_option('debuggerAddress', '127.0.0.1:9222')

service = Service(r'C:\path\to\msedgedriver.exe') # 替换为你的EdgeDriver路径
driver = webdriver.Edge(service=service, options=edge_options)
driver.get("https://www.youtube.com")
print(driver.title)

5. 验证调试端口是否正常监听 #

打开浏览器访问http://127.0.0.1:9222/json，如果能返回JSON格式的会话数据，说明端口正常；如果无法访问，检查启动命令是否正确，或端口是否被其他程序占用。

内容的提问来源于stack exchange，提问作者Justin