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

A.L*_*Lee 2 python selenium selenium-grid selenium-chromedriver selenium-webdriver

嗨,任何人都知道发生了什么或我如何调试错误如下。我所做的步骤是使用 setup hub 命令并将节点注册到 hub。在命令注册节点之后。我可以看到日志

The node is registered to the hub and ready to use 
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但是,当我运行测试脚本时,我将错误打印为:

selenium.common.exceptions.SessionNotCreatedException: Message: Unable to create new service: ChromeDriverService
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二进制版本:

  • 硒独立版本:3.14.0
  • selenium 远程驱动版本:selenium==3.14.1
  • 蟒蛇版本: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)
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设置中心:

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

#java -jar /Users/admin/selenium-server-standalone-3.14.0.jar -role node
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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
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Deb*_*anB 6

这个错误信息...

selenium.common.exceptions.SessionNotCreatedException: Message: Unable to create new service: ChromeDriverService
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...暗示ChromeDriver无法启动/生成新的ChromeDriverService

命令和您使用的二进制文件版本之间的不兼容性存在一些问题,如下所示:

  • 您的JDK 版本1.8.0_91,这是非常古老的
  • JDK升级到最新级别JDK 8u181
  • 要注册Selenium Grid Hub,您需要使用以下命令:

    >java -jar /Users/admin/selenium-server-standalone-3.14.0.jar -role hub
    
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  • 要为ChromeDriverChrome注册Selenium 网格节点,您需要传递ChromeDriver的绝对路径以及注册 URI,如下所示:

    >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
    
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  • 你的代码块对我来说很好看。