SessionNotCreatedException:消息:无法创建新服务:通过 Python 使用 ChromeDriver 和 SeleniumGrid 的 ChromeDriverService

2022-01-15 00:00:00 python selenium selenium-chromedriver selenium-webdriver selenium-grid

问题描述

您好，任何人都知道发生了什么或如何调试错误，如下所示.我所做的步骤是使用设置集线器命令并将节点注册到集线器.在命令注册节点之后.我可以看到日志为

Hi anyone know what is going on or how I can debug the error as following. the step I did is using setup hub command and register node to hub. after the command register node. I can see the log as

The node is registered to the hub and ready to use

但是，当我运行测试脚本时，我的错误打印为:

However when I run the test script I have error print up as: 

selenium.common.exceptions.SessionNotCreatedException: Message: Unable to create new service: ChromeDriverService

二进制版本:

  • selenium 独立版本:3.14.0
  • selenium 远程驱动版本:selenium==3.14.1
  • python 版本:3.6.4

脚本:

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

driver = webdriver.Remote(command_executor='http://localhost:4444/wd/hub',
                          desired_capabilities=DesiredCapabilities.CHROME)

设置中心:

#java -jar /Users/admin/selenium-server-standalone-3.14.0.jar -host localhost -role hub

注册节点:

#java -jar /Users/admin/selenium-server-standalone-3.14.0.jar -role node

错误:

E       selenium.common.exceptions.SessionNotCreatedException: Message: Unable to create new service: ChromeDriverService
E       Build info: version: '3.14.0', revision: 'aacccce0', time: '2018-08-02T20:13:22.693Z'
E       Driver info: driver.version: unknown
E       Stacktrace:
E           at org.openqa.selenium.remote.server.ServicedSession$Factory.lambda$get$0 (ServicedSession.java:134)
E           at org.openqa.selenium.remote.server.ServicedSession$Factory.apply (ServicedSession.java:151)
E           at org.openqa.selenium.remote.server.ActiveSessionFactory.lambda$apply$12 (ActiveSessionFactory.java:177)
E           at java.util.stream.ReferencePipeline$3$1.accept (ReferencePipeline.java:193)
...
E           at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:511)
E           at java.util.concurrent.FutureTask.run (FutureTask.java:266)
E           at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1142)
E           at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:617)
E           at java.lang.Thread.run (Thread.java:745)

../lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py:242: SessionNotCreatedException

解决方案

这个错误信息...

selenium.common.exceptions.SessionNotCreatedException: Message: Unable to create new service: ChromeDriverService

...暗示 ChromeDriver 无法启动/生成新的 ChromeDriverService.

...implies that the ChromeDriver was unable to initiate/spawn a new ChromeDriverService.

commands 和 incompatibility 在您使用的二进制文件版本之间存在几个问题，如下所示:

There are a couple of issues in the commands and incompatibility between the version of the binaries you are using as follows:

  • 您的 JDK 版本是 1.8.0_91，非常古老.
  • 将 JDK 升级到最新级别 JDK 8u181.

  • 要注册一个Selenium Grid Hub，您需要使用以下命令:

  • Your JDK version is 1.8.0_91 which is pretty ancient.
  • Upgrade JDK to recent levels JDK 8u181.

  • To register a Selenium Grid Hub you need to use the following command:

>java -jar /Users/admin/selenium-server-standalone-3.14.0.jar -role hub

  • 要为ChromeDriver和Chrome注册一个Selenium Grid Node，你需要传递ChromeDriver的绝对路径 以及 Registration URI 的 Key 和 Value 如下:

  • To register a Selenium Grid Node for ChromeDriver and Chrome you need to pass the absolute path of the ChromeDriver along with the Key and Value of the Registration URI as follows:

    >java -Dwebdriver.chrome.driver=/path/to/chromedriver.exe -jar /Users/admin/selenium-server-standalone-3.14.0.jar -role node -hub http://<IP_GRID_HUB>:4444/grid/register

  • 你的代码块在我看来不错.

  • You code block looks good to me.

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