为什么我在 Docker 中收到 RSelenium 的语法错误？

Question

我正在努力学习本教程 RSelenium and scraping，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，一切似乎都很好，但是我运行使用以下命令遇到了问题：

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return这个错误：

bash: syntax error near unexpected token `('

我做错了什么？

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。

Answer 1

您的基本问题是，您试图在 bash shell 提示符下键入 R 命令，但这是行不通的。我认为您可能错过了您所关注的教程的要点：

您正在使用的 Docker 图像仅提供了 Selenium，这是一种用于远程控制 Web 浏览器的工具。预计您在主机上是运行 R，并将 RSelenium 库指向 Docker 容器提供的硒服务。

您需要在主机上安装 R 才能学习该教程。

为什么我在 Docker 中收到 RSelenium 的语法错误？

Why am I getting a syntax error with RSelenium in Docker?

docker

rselenium