码头上的RSelenium：文件在哪里下载？ [英] RSelenium on docker: where are files downloaded?

问题描述

  require（RSelenium）
 
如果length（system（docker ps -l，intern = TRUE））< 2）
 try（{system（docker run -d -p 4445：4444 selenium / standalone-firefox：2.53.0） }）
  

它可以连接到任何url并导航。但是当我点击一个按钮来下载文件时，它有时将它保存（部分地保存为 xxxxxxx.csv.part ）到 / tmp / mozilla_mozillaUser0 ，有时候...没有地方，或者可能找不到另一个位置...

有没有原因？ p>

此外，我也尝试使用

  makeFirefoxProfile（list（browser .download.dir =D：/ temp））
  

但它返回一个奇怪的错误

 文件中的错误（tmpfile，rb）：无法打开连接
另外：警告消息：
 1：运行命令'zip-r9XjqC：\Users\rocks\AppData\Local\Temp\RtmpoPhjUb\file31076202d4f.zipC：\Users\rocks\AppData \Local\Temp\RtmpoPhjUb / firefoxprofile / prefs.js'状态127 
 2：在文件（tmpfile，rb）：
无法打开文件'C：\Users\\ \\rocks\AppData\Local\Temp\\ RtmpoPhjUb\file31076202d4f.zip'：没有这样的文件或目录
  

我可以理解为什么这个desn' t工作，因为所有链接都在Windows中，但是我的selenium在docker容器或Ubuntu中运行。

我的安装程序：R在Windows上运行，我有一个docker包含硒服务器的Ubuntu。

编辑： 原来我的问题是因为主机上没有安装firefox em>（理论上不需要）。
我通过使用（而不是调用 makeFirefoxProfile ）来修复问题：

  fprof =结构（列表（firefox_profile = UEsDBBQAAAAIANJiVEobimJN8QAAABkCAAAIAAAAcHJlZnMuanOFkT9PwzAQxXckvkOUCSQnlliZkDqygcSITHyJTW3fyXdNIj49btqBoLTd7t57v / OfOzDkT8rQP9RfGafStRanFNDY1vpcq6rWDiNohnDM6t3Z5frx + f7uGt5jsJBfPUuZ8nQrHU0yQxHY4fThIL2JyeLTUNjeBIYLvINAkF + IuE0wlor3LZsR3nHneX + 8fjwE8VSG6bn58aQMUfCdEY9J / + + tPiabDWA5hBrs2LxmRJ8xrqeNRCcyyFD6Wl2lKQ3UuvwkGVf3Nk 1VtQBOYjihFIxPqlrlYO4grNExlc / jZsOZt8XIGzJ2AtKwZDBx2ewvUEsBAj8AFAAAAAgA0mJUShuKYk3xAAAAGQIAAAgAJAAAAAAAAAAgAAAAAAAAAHByZWZzLmpzCgAgAAAAAAABABgAzaOo9TCL0gHdkgMtLYvSAd2SAy0ti9IBUEsFBgAAAAABAAEAWgAAABcBAAAAAA ==），.Names = firefox_profile）
 remDr<  -  remoteDriver （extraCapabilities = ePrefs，port = 4445）
  

解决方案

容器是运行它的HOST的单独实体。您需要将HOST上的目录映射到您下载文件的容器上的目录：

您可以在启动容器时执行此操作：

  docker run -d -p 4445：4444 -p 5901：5900 -v / home / john / test：/ home / seluser / Downloads selenium / standalone -firefox-debug：2.53.1 
  

这里（我在linux上运行docker）我映射了目录我的linux HOST（/ home / john / test）到容器上的一个目录（/ home / seluser / Downloads）。

然后，我们需要在firefox配置文件中添加必要的信息：

  library（RSelenium）
 ePrefs<  -  makeFirefoxProfile（
 list（
 browser.download.dir =/ home / seluser / Downloads，
browser.download。 folderList= 2L，
browser.download.manager.showWhenStarting= FALSE，
browser.helperApps.neverAsk.saveToDisk=multipart / x-zip，application / zip，application / x- zip压缩，应用程序/ x压缩，应用程序/ msword，application / csv，text / csv，image / png，image / jpeg，application / pdf，text / html，text / plain，application / excel，application / vnd。 ms-excel，application / x-excel，application / x-msexcel，application / octet-stream）
 remDr<  -  remoteDriver（extraCapabilities = ePrefs，port = 4445）
 remDr $ open ）
 remDr $ navigate（http://www.colorado.edu/conflict/peace/download/）
 firstzip<  -  remDr $ findElement（xpath，// a [ （@href，'zip'）]）
 firstzip $ clickElement（）
  

我们可以检查下载是否在HOST机器上：

 > list.files（/ home / john / test /）
 [1]peace.zip
  

I am using Selenium using a docker image:

require(RSelenium)

  if (length(system("docker ps -l", intern = TRUE))<2)
    try({system("docker run -d -p 4445:4444 selenium/standalone-firefox:2.53.0")})

It works, I can connect to any url and navigate. However when I click a button to download a file, it sometimes saves it (partially, saved as xxxxxxx.csv.part) to /tmp/mozilla_mozillaUser0, and sometimes to ... nowhere, or maybe another location I cannot find...

Is there a reason for that?

Also I tried to open the driver using

makeFirefoxProfile(list(browser.download.dir = "D:/temp"))

but it returns a weird error

Error in file(tmpfile, "rb") : cannot open the connection
In addition: Warning messages:
1: running command '"zip" -r9Xjq "C:\Users\rocks\AppData\Local\Temp\RtmpoPhjUb\file31076202d4f.zip" "C:\Users\rocks\AppData\Local\Temp\RtmpoPhjUb/firefoxprofile/prefs.js" ' had status 127 
2: In file(tmpfile, "rb") :
  cannot open file 'C:\Users\rocks\AppData\Local\Temp\RtmpoPhjUb\file31076202d4f.zip': No such file or directory

where I can understand why this desn't work given that all links are in windows but my selenium runs in a docker container or Ubuntu.

My Setup: R running on Windows, and I have a docker image of Ubuntu that contains the selenium server.

EDIT: turns out my issue was because firefox was not installed on the host machine (which is not needed in theory). I fixed the issue by using (instead of invoking makeFirefoxProfile):

fprof = structure(list(firefox_profile = "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"), .Names = "firefox_profile")
remDr <- remoteDriver(extraCapabilities = ePrefs, port = 4445)

解决方案

The docker container is a separate entity to the HOST which is running it. You need to map a directory on the HOST to a directory on the container you download files to:

You can do this when starting your container:

docker run -d -p 4445:4444 -p 5901:5900 -v /home/john/test:/home/seluser/Downloads selenium/standalone-firefox-debug:2.53.1

Here (i am running docker on linux) I have mapped a directory on my linux HOST (/home/john/test) to a directory on the container (/home/seluser/Downloads).

We then need to add the necessary information to the firefox profile:

library(RSelenium)
ePrefs <- makeFirefoxProfile(
  list(
    browser.download.dir = "/home/seluser/Downloads",
    "browser.download.folderList" = 2L,
    "browser.download.manager.showWhenStarting" = FALSE,
    "browser.helperApps.neverAsk.saveToDisk" = "multipart/x-zip,application/zip,application/x-zip-compressed,application/x-compressed,application/msword,application/csv,text/csv,image/png ,image/jpeg, application/pdf, text/html,text/plain,  application/excel, application/vnd.ms-excel, application/x-excel, application/x-msexcel, application/octet-stream"))
remDr <- remoteDriver(extraCapabilities = ePrefs, port = 4445)
remDr$open()
remDr$navigate("http://www.colorado.edu/conflict/peace/download/")
firstzip <- remDr$findElement("xpath", "//a[contains(@href, 'zip')]")
firstzip$clickElement()

We can check if the download is on the HOST machine:

> list.files("/home/john/test/")
[1] "peace.zip"

这篇关于码头上的RSelenium：文件在哪里下载？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！