Question

我试图在python3.6 / selenium3.141.0 / Ubuntu 18.04 LTS（Lightsail Amazon Linux）中创建一个webdriver对象，但是当我调用webdriver.Chrome（）对象时，它引发了异常。当我使用Windows在本地运行该代码时，该代码有效（我只需要将chromedriver更改为Windows版本）即可。 chromedriver位于/ usr / bin / chromedriver中，我的用户有权执行它。

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我的代码是一个使用Flask并在gunicorn服务器上运行的Web应用，它使用python线程包。

谢谢！

在Ubuntu上安装的Chromedriver和Chrome版本： Chromedriver（http://chromedriver.storage.googleapis.com/index.html?path=76.0.3809.126/的chromedriver_linux64.zip）

命令：chromedriver -v;我得到它的版本： ChromeDriver 76.0.3809.126（d80a294506b4c9d18015e755cee48f953ddc3f2f-refs / branch-heads / 380 9 @ {＃1024}）

命令：google-chrome-stable -version;我得到它的版本：谷歌浏览器76.0.3809.132

根据该站点，这些是76版本的正确/兼容版本： https://chromedriver.chromium.org/downloads 最新发行如果您使用的是Chrome版本77，请下载ChromeDriver 77.0.3865.40 如果您使用的是Chrome版本76，请下载ChromeDriver 76.0.3809.126 如果您使用的是Chrome 75版，请下载ChromeDriver 75.0.3770.140 对于旧版的Chrome，请参阅以下有关支持它的ChromeDriver版本。

我的代码：

from selenium import webdriver
from selenium.common.exceptions import NoSuchElementException, UnexpectedAlertPresentException, TimeoutException
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.select import Select
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import chromedriver_binary

##...(there is another function before to create folders)

def funcCX():
   chrome_options = webdriver.ChromeOptions()
   chrome_options.add_argument('--kiosk-printing')
   chrome_options.add_argument('--disable-gpu')
   chrome_options.add_argument('--headless')
   driver = webdriver.Chrome('/usr/bin/chromedriver', chrome_options=chrome_options)

＃

这些是我用来安装chrome和chromedriver的命令：

wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add 
echo 'deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main' | sudo tee /etc/apt/sources.list.d/google-chrome.list

sudo apt-get update 
sudo apt-get install google-chrome-stable
google-chrome-stable -version

sudo apt-get install -y unzip xvfb libxi6 libgconf-2-4

wget https://chromedriver.storage.googleapis.com/76.0.3809.126/chromedriver_linux64.zip
unzip chromedriver_linux64.zip

sudo mv chromedriver /usr/bin/chromedriver
sudo chown root:root /usr/bin/chromedriver
sudo chmod +x /usr/bin/chromedriver
chromedriver -v

这是出现的错误消息：

Exception in thread Thread-3:
Traceback (most recent call last):
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/connectionpool.py", line 
603, in urlopen
    chunked=chunked)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/connectionpool.py", line 
387, in _make_request
    six.raise_from(e, None)
  File "<string>", line 2, in raise_from
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/connectionpool.py", line 
383, in _make_request
    httplib_response = conn.getresponse()
  File "/usr/lib/python3.6/http/client.py", line 1331, in getresponse
    response.begin()
  File "/usr/lib/python3.6/http/client.py", line 297, in begin
    version, status, reason = self._read_status()
  File "/usr/lib/python3.6/http/client.py", line 266, in _read_status
    raise RemoteDisconnected("Remote end closed connection without"
http.client.RemoteDisconnected: Remote end closed connection without response

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/home/ubuntu/AttCx1/pesquisas.py", line 127, in funcCiweb
    driver = webdriver.Chrome('/usr/bin/chromedriver', chrome_options=chrome_options)

  File "/home/ubuntu/att-env/lib/python3.6/site-packages/selenium/webdriver/chrome/webdriv
er.py", line 81, in __init__
    desired_capabilities=desired_capabilities)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/selenium/webdriver/remote/webdriv
er.py", line 157, in __init__
    self.start_session(capabilities, browser_profile)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/selenium/webdriver/remote/webdriv
er.py", line 252, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/selenium/webdriver/remote/webdriv
er.py", line 319, in execute
    response = self.command_executor.execute(driver_command, params)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/selenium/webdriver/remote/remote_
connection.py", line 374, in execute
    return self._request(command_info[0], url, body=data)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/selenium/webdriver/remote/remote_
connection.py", line 397, in _request
    resp = self._conn.request(method, url, body=body, headers=headers)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/request.py", line 72, in 
request
    **urlopen_kw)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/request.py", line 150, in
 request_encode_body
    return self.urlopen(method, url, **extra_kw)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/poolmanager.py", line 326, in urlopen
    response = conn.urlopen(method, u.request_uri, **kw)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/connectionpool.py", line 641, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/util/retry.py", line 368, in increment
    raise six.reraise(type(error), error, _stacktrace)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/packages/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/connectionpool.py", line 603, in urlopen
    chunked=chunked)
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/connectionpool.py", line 387, in _make_request
    six.raise_from(e, None)
  File "<string>", line 2, in raise_from
  File "/home/ubuntu/att-env/lib/python3.6/site-packages/urllib3/connectionpool.py", line 383, in _make_request
    httplib_response = conn.getresponse()
  File "/usr/lib/python3.6/http/client.py", line 1331, in getresponse
    response.begin()
  File "/usr/lib/python3.6/http/client.py", line 297, in begin
    version, status, reason = self._read_status()
  File "/usr/lib/python3.6/http/client.py", line 266, in _read_status
    raise RemoteDisconnected("Remote end closed connection without"
urllib3.exceptions.ProtocolError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response',))

由于另外两个线程试图使用相同的代码创建其他webdriver对象，此消息重复了两次。

Answer 1

我相信您应该在ChromeDriver初始化例程中添加下一行

 chrome_options.add_argument('--no-sandbox')

因为当您以root user的身份运行Chrome时，这是绝对必要的

参考文献：

硒webdriver Python在ubuntu SessionNotCreatedException

1 个答案: