使用 RSelenium 下载 pdf [英] Downloading a pdf using RSelenium

问题描述

我试图用 RSelenium 包做的是，

What I am trying to do with RSelenium package is,

步骤:1 访问网站 - 我自己的电力供应商

Step:1 Access a website - My own electric utility provider

步骤:2 通过明确提供我的用户名和密码来访问我的帐户(这就是我无法共享代码的原因)

Step:2 Access my account by explicitly providing my username and password (That's the reason I am unable to share the code)

步骤:3 我点击'查看我的帐单'.帐单以 pdf 格式显示.

Step:3 I click 'VIEW MY BILL'. The bill is displayed in pdf format.

有没有办法下载该文件并保存到特定文件夹?当我使用 download.file() 命令时，它不会保存文档，而是得到一个无法打开的 3KB pdf 文件.Adobe Reader 说读取文档时出错.

Is there a way to download that file and save to specific folder? When I used download.file() command, it does not save the document, rather I get a 3KB pdf file that I am not able to open. Adobe Reader says that there is an error reading the document.

我尝试过的可能方法:1. 右键单击​​，按四次向下箭头，然后转到 'SAVE PAGE AS' 单击 Enter.

Possible method that I tried: 1. Right clicking, Pressing down arrow four times and then get to 'SAVE PAGE AS' click Enter.

但随后它会弹出一个对话框，询问文件名和位置，我无法通过 RSelenium 输入这些详细信息并保存文件.

But then it pops a dialog box asking for file name and location and I am not able to enter those details via RSelenium and save the file.

示例代码:在网上找到的一些随机 PDF.

Example code: Some random PDF found online.

url<- "http://www.immigrationpolicy.org/sites/default/files/docs/how_us_immig_system_works.pdf"

setwd("C:/Users/king/Desktop/bill")
library(RSelenium)
library(downloader)
checkForServer()
startServer()
remDr <- remoteDriver()
remDr$open()
remDr$navigate(url)

推荐答案

我在不断的研究中找到了答案.

I found the answer on continuous research.

首先检查是否安装了Rtools(使用此链接找到答案)

Firstly check whether Rtools is installed (Found the answer using this link)

然后更新我的程序

cprof<-makeFirefoxProfile(list(
  "pdfjs.disabled"=TRUE,
  "plugin.scan.plid.all" = FALSE,
  "plugin.scan.Acrobat" = "99.0",
  "browser.helperApps.neverAsk.saveToDisk"='application/pdf',
  ))
remDr <- remoteDriver(extraCapabilities=cprof)

仍在尝试更改我尚未找到的下载文件夹.我从 中找到了答案这个链接

Trying still to change the download folder which I am not able to find yet. I found the answer from THIS link

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