r - 如何为 R 设置 rselenium？

Question

“那时一切都更好”...

从 Firefox 49(？)开始，你不能再使用 rselenium 包了。我搜索了整个互联网以找到用于设置 rselenium 的简单操作手册，但没有找到任何相关且最新的内容。

有人可以为我和所有其他不知道的人提供一份简单的操作手册吗？喜欢:

1. 下载 XY
2. 打开AB

这样我就可以运行如下代码

require(RSelenium)

remDr <- remoteDriver(remoteServerAddr = "localhost", port = 4444L, 
browserName = "firefox")
remDr$open()

Answer 1

下载最新版本的RSelenium >= 1.7.1。运行以下命令:

library(RSelenium)
rD <- rsDriver() # runs a chrome browser, wait for necessary files to download
remDr <- rD$client
# no need for remDr$open() browser should already be open

如果您想要 Firefox 浏览器，请使用 rsDriver(browser = "firefox")。

http://rpubs.com/johndharrison/RSelenium-Basics 附录中有详细说明。然而，运行 RSelenium 的推荐方法是通过 Docker 容器。有关将 Docker 与 RSelenium 结合使用的说明，请访问 http://rpubs.com/johndharrison/RSelenium-Docker

问题:

如果您遇到因管理员权限或其他变量(例如防病毒软件)而可能出现的问题，您可以手动运行 Selenium 服务器。最简单的方法是通过 wdman 包:

selCommand<- 
  wdman::selenium(jvmargs = c("-Dwebdriver.chrome.verboseLogging=true"), 
                  retcommand = TRUE)
> cat(selCommand)
C:\PROGRA~3\Oracle\Java\javapath\java.exe -Dwebdriver.chrome.verboseLogging=true -Dwebdriver.chrome.driver="C:\Users\john\AppData\Local\binman\binman_chromedriver\win32\2.27/chromedriver.exe" -Dwebdriver.gecko.driver="C:\Users\john\AppData\Local\binman\binman_geckodriver\win64\0.14.0/geckodriver.exe" -Dphantomjs.binary.path="C:\Users\john\AppData\Local\binman\binman_phantomjs\windows\2.1.1/phantomjs-2.1.1-windows/bin/phantomjs.exe" -jar "C:\Users\john\AppData\Local\binman\binman_seleniumserver\generic\3.0.1/selenium-server-standalone-3.0.1.jar" -port 4567

使用启用了 retcommand 选项的 wdman 函数之一将返回 将运行的命令行调用。

现在您可以在终端中运行 cat(selCommand) 的输出

C:\Users\john>C:\PROGRA~3\Oracle\Java\javapath\java.exe -Dwebdriver.chrome.verboseLogging=true -Dwebdriver.chrome.driver="C:\Users\john\AppData\Local\binman\binman_chromedriver\win32\2.27/chromedriver.exe" -Dwebdriver.gecko.driver="C:\Users\john\AppData\Local\binman\binman_geckodriver\win64\0.14.0/geckodriver.exe" -Dphantomjs.binary.path="C:\Users\john\AppData\Local\binman\binman_phantomjs\windows\2.1.1/phantomjs-2.1.1-windows/bin/phantomjs.exe" -jar "C:\Users\john\AppData\Local\binman\binman_seleniumserver\generic\3.0.1/selenium-server-standalone-3.0.1.jar" -port 4567
12:15:29.206 INFO - Selenium build info: version: '3.0.1', revision: '1969d75'
12:15:29.206 INFO - Launching a standalone Selenium Server
2017-02-08 12:15:29.223:INFO::main: Logging initialized @146ms
12:15:29.265 INFO - Driver class not found: com.opera.core.systems.OperaDriver
12:15:29.265 INFO - Driver provider com.opera.core.systems.OperaDriver registration is skipped:
Unable to create new instances on this machine.
12:15:29.265 INFO - Driver class not found: com.opera.core.systems.OperaDriver
12:15:29.266 INFO - Driver provider com.opera.core.systems.OperaDriver is not registered
12:15:29.271 INFO - Driver provider org.openqa.selenium.safari.SafariDriver registration is skipped:
 registration capabilities Capabilities [{browserName=safari, version=, platform=MAC}] does not match the current platform WIN10
2017-02-08 12:15:29.302:INFO:osjs.Server:main: jetty-9.2.15.v20160210
2017-02-08 12:15:29.317:INFO:osjsh.ContextHandler:main: Started o.s.j.s.ServletContextHandler@c4c815{/,null,AVAILABLE}
2017-02-08 12:15:29.332:INFO:osjs.ServerConnector:main: Started ServerConnector@4af044{HTTP/1.1}{0.0.0.0:4567}
2017-02-08 12:15:29.333:INFO:osjs.Server:main: Started @257ms
12:15:29.334 INFO - Selenium Server is up and running

现在尝试运行浏览器

remDr <- remoteDriver(port = 4567L, browserName = "chrome")
remDr$open()

如果您无法手动运行 Selenium 服务器，那么您需要将问题(包括相关日志文件)解决到 Selenium 项目或相应的驱动程序项目(chromedriver/geckodriver/ghostdirver 等)