ActionChains报错问题总结

在使用Python2.7+Selenium3.0.2+Firefox50.1时，鼠标事件ActionChains运行总是报错，报错信息如下：

C:\Python36\python3.exe C:/Users/root/PycharmProjects/untitled3/test170117.py

Traceback (most recent call last):

  File "C:/Users/root/PycharmProjects/untitled3/test170117.py", line 458, in <module>

    ActionChains(driver).move_to_element(set).perform()

  File "C:\Python36\lib\site-packages\selenium\webdriver\common\action_chains.py", line 74, in perform

    action()

  File "C:\Python36\lib\site-packages\selenium\webdriver\common\action_chains.py", line 225, in <lambda>

    Command.MOVE_TO, {'element': to_element.id}))

  File "C:\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 236, in execute

    self.error_handler.check_response(response)

  File "C:\Python36\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 192, in check_response

    raise exception_class(message, screen, stacktrace)

selenium.common.exceptions.WebDriverException: Message: POST /session/3ba988a1-5c6f-4999-8815-71d40e62a6af/moveto did not match a known command

 

经过搜索，说是geckodriver和Firefox有Bug,最后将Selenium3.0.2换成Selenium2.53.0（此时环境为Python2.7+Selenium2.53.0+Firefox50.1），此时运行python脚本时，报错：

报错信息忘了截图了？？？？？

搜索后，说是因为Selenium支持Firefox及其以下版本，所以最后环境变为：Python2.7+Selenium2.53.0+Firefox46，问题解决，ActionChains（）类下的各种鼠标操作方法完美运行。

github上该Bug相关信息：

https://github.com/SeleniumHQ/selenium/issues/2285

https://github.com/mozilla/geckodriver/issues/159