无法执行rsDriver（连接被拒绝） [英] can't execute rsDriver (connection refused)

问题描述

我不能用R硒去任何地方。这是第一步，也是我的输出：

I can't get anywhere with R selenium. Here's the first step and my output:

library(RSelenium)
rD <- rsDriver()
# checking Selenium Server versions:
#   BEGIN: PREDOWNLOAD
# BEGIN: DOWNLOAD
# BEGIN: POSTDOWNLOAD
# checking chromedriver versions:
#   BEGIN: PREDOWNLOAD
# BEGIN: DOWNLOAD
# BEGIN: POSTDOWNLOAD
# checking geckodriver versions:
#   BEGIN: PREDOWNLOAD
# BEGIN: DOWNLOAD
# BEGIN: POSTDOWNLOAD
# checking phantomjs versions:
#   BEGIN: PREDOWNLOAD
# BEGIN: DOWNLOAD
# BEGIN: POSTDOWNLOAD
# [1] "Connecting to remote server"
# Error in checkError(res) : 
#   Undefined error in httr call. httr output: Failed to connect to localhost port 4567: Connection refused
# In addition: Warning message:
#   In rsDriver() : Could not determine server status.

我错过了什么？

推荐答案

注意：此答案适用于Windows

在尝试运行已弃用的 checkForServer（）时 Selenium提供了两种选择：

When trying to run the deprecated checkForServer() Selenium offers two options:

• 使用rsDriver


• 使用Docker

请参阅：

RSelenium::checkForServer()
# Error: checkForServer is now defunct. Users in future can find the function in 
# file.path(find.package("RSelenium"), "examples/serverUtils"). The
# recommended way to run a selenium server is via Docker. Alternatively
# see the RSelenium::rsDriver function.

每个人 似乎 < a href = https://stackoverflow.com/questions/45293675/rselenium-rsdriver-peer-ssl-certificate-issue?s=3%7C2.7177>要与rsDriver有关，而Docker是推荐的选项，因此我们将采用以下路线：

Everybody seems to have issues with rsDriver and Docker is the recommended option so we'll go this route:

• 安装docker


• 运行它，根据要求重新启动计算机


• 通过在命令行中运行来拉映像： docker pull selenium / standalone-firefox （或 chrome 而不是 firefox ）或在R shell（'docker pull selenium / standalone-firefox'）


• 通过在命令行中运行来启动服务器： docker run -d -p 4445：4444 selenium / standalone-firefox 或在R shell中（'docker run -d -p 4445：4444 selenium / standalone-firefox'）


• 然后运行 remDr<-remoteDriver（remoteServerAddr =本地主机，端口= 4445L，浏览器名称= firefox）。该文档对虚拟机提出了一些不同的建议，但我无法使其正常工作。

• install docker
• run it, restart computer as requested
• pull image by running in command line: docker pull selenium/standalone-firefox(or chrome instead of firefox) or in R shell('docker pull selenium/standalone-firefox')
• start server by running in command line: docker run -d -p 4445:4444 selenium/standalone-firefox or in R shell('docker run -d -p 4445:4444 selenium/standalone-firefox')
• Then run remDr <- remoteDriver(remoteServerAddr = "localhost", port = 4445L, browserName = "firefox'") . The doc suggests something different with a virtual machine but i couldn't get it to work.

为此，我设置了以下代码：

With this I was set, here is my code:

shell('docker run -d -p 4445:4444 selenium/standalone-firefox')
remDr <- remoteDriver(remoteServerAddr = "localhost", port = 4445L, browserName = "firefox")
remDr$open()
remDr$navigate("http://www.google.com/ncr")
remDr$getTitle()
# [[1]]
# [1] "Google" 

更多信息的文档：

• < a href = https://cran.r-project.org/web/packages/RSelenium/vignettes/RSelenium-basics.html rel = nofollow noreferrer> https://cran.r-project.org/web /packages/RSelenium/vignettes/RSelenium-basics.html


• https://cran.r-project.org/web/packages/RSelenium/vignettes/RSelenium-docker.html

• https://cran.r-project.org/web/packages/RSelenium/vignettes/RSelenium-basics.html
• https://cran.r-project.org/web/packages/RSelenium/vignettes/RSelenium-docker.html

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