Question

当我尝试打开RSelenium时，我收到此错误

[1] "Connecting to remote server"
Error:   Summary: UnknownError
     Detail: An unknown server-side error occurred while processing the command.
     class: org.openqa.selenium.firefox.NotConnectedException

我的Firefox版本是

Firefox version: 480b10

根据this，我尝试更新服务器版本

library("RSelenium")
startServer()
unlink(system.file("bin", package = "RSelenium"), recursive = T)
checkForServer(update = TRUE)
remDr <- remoteDriver()
Sys.sleep(5)
remDr$open()
Sys.sleep(5)

但问题仍然存在。有人面对这个问题吗？任何可能的解决方案？

Answer 1

从Firefox 48开始，需要使用Gecko驱动程序/牵线木偶来运行带有Selenium的Firefox。

如果你有Firefox 48，你可以按如下方式运行gecko驱动程序：

参阅指南

https://developer.mozilla.org/en-US/docs/Mozilla/QA/Marionette/WebDriver
从https://github.com/mozilla/geckodriver/releases
将其添加到PATH或在启动二进制文件时参考位置（见下文）

# get beta selenium standalone

RSelenium::checkForServer(beta = TRUE)
# assume gecko driver is not in our path (assume windows and we downloaded to docs folder)
# if the driver is in your PATH the javaargs call is not needed
selServ <- RSelenium::startServer(javaargs = c("-Dwebdriver.gecko.driver=\"C:/Users/john/Documents/geckodriver.exe\""))
remDr <- remoteDriver(extraCapabilities = list(marionette = TRUE))
remDr$open()
....
....
remDr$close()
selServ$stop()

以上目前需要RSelenium的开发版本。或者，您可以从http://selenium-release.storage.googleapis.com/index.html下载Selenium二进制文件。选择当前使用Firefox 48运行的3.0 beta 2二进制文件。运行二进制文件

java -Dwebdriver.gecko.driver=C:/Users/john/Documents/geckodriver.exe -jar selenium-server-standalone-3.0.0-beta2.jar

最新版本的RSelenium和Firefox

1 个答案: