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docker - 为什么我在 Docker 中遇到 RSelenium 语法错误？

问题描述

我正在尝试遵循本教程RSelenium 和抓取，因为它似乎正是我想要做的。使用 RSelenium 抓取 Javascript 网站。

我已经安装了 Docker，一切看起来都很好，但是我遇到了以下命令的问题：

remDr <- remoteDriver(remoteServerAddr = "localhost", port = 4445L, browserName = "firefox'")

我认为应该是：

remDr <- remoteDriver(remoteServerAddr = "localhost", port = 4445L, browserName = "firefox")

但是，两个版本都返回此错误：

bash: syntax error near unexpected token `('

我究竟做错了什么？

这是完整的日志：

Starting "default"...
(default) Check network to re-create if needed...
(default) Windows might ask for the permission to configure a dhcp server. Sometimes, such confirmation window is minimized in the taskbar.
(default) Waiting for an IP...
Machine "default" was started.
Waiting for SSH to be available...
Detecting the provisioner...
Started machines may have new IP addresses. You may need to re-run the `docker-machine env` command.
Regenerate TLS machine certs?  Warning: this is irreversible. (y/n): Regenerating TLS certificates
Waiting for SSH to be available...
Detecting the provisioner...
Copying certs to the local machine directory...
Copying certs to the remote machine...
Setting Docker configuration on the remote daemon...



                        ##         .
                  ## ## ##        ==
               ## ## ## ## ##    ===
           /"""""""""""""""""\___/ ===
      ~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ /  ===- ~~~
           \______ o           __/
             \    \         __/
              \____\_______/

docker is configured to use the default machine with IP 192.168.99.100
For help getting started, check out the docs at https://docs.docker.com


Start interactive shell

graha@LAPTOP-SWIFT MINGW64 /c/Program Files/Docker Toolbox
$ docker pull selenium/standalone-chrome                                                                                Using default tag: latest
latest: Pulling from selenium/standalone-chrome
Digest: sha256:d46e05c47bad20ec4ad675368fa1b7addb6c9529e8fdc23f5eb55629235b8e14
Status: Image is up to date for selenium/standalone-chrome:latest

graha@LAPTOP-SWIFT MINGW64 /c/Program Files/Docker Toolbox
$ docker run -d -p 4445:4444 selenium/standalone-chrome                                                                 fbb8c9145e92789f6941cc04fb74d216d43aed178825c1698ede2644589c715f

graha@LAPTOP-SWIFT MINGW64 /c/Program Files/Docker Toolbox
$ remDr <- remoteDriver(remoteServerAddr = "localhost", port = 4445L, browserName = "chrome")
bash: syntax error near unexpected token `('

graha@LAPTOP-SWIFT MINGW64 /c/Program Files/Docker Toolbox
$

谢谢。

标签： dockerrselenium

解决方案

您的基本问题是您尝试在 bash shell 提示符下键入 R 命令，而这永远不会起作用。我认为您可能错过了您所遵循的教程的要点：

您使用的 Docker 映像仅提供 Selenium，这是一种用于远程控制 Web 浏览器的工具。预计您在主机上运行 R，并将 RSelenium 库指向 Docker 容器提供的 selenium 服务。

您需要在主机上安装 R 才能学习该教程。

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