rselenium

问题 I have updated my r to latest version and I installed Rselenium again. I try to use rsDriver but it has a problem with port 4567. Same like this Error trace back: rd <-rsDriver(verbose =TRUE, browser = 'phantomjs', version = "3.4.0") 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

问题 I try to reproduce an example code from here Here is the code: library("RSelenium") #start RSelenium server rD <- rsDriver(verbose = FALSE) remDr <- rD$client remDr$open() remDr$navigate("http://www.google.com/ncr") script <- "return document.getElementById('hplogo').hidden;" remDr$executeScript(script, args = list()) and for the last line I receive this error: Selenium message:unknown error: 'args' must be a list (Session info: chrome=60.0.3112.113) (Driver info: chromedriver=2.32.498550

问题 When I try to open the RSelenium I receive this error [1] "Connecting to remote server" Error: Summary: UnknownError Detail: An unknown server-side error occurred while processing the command. class: org.openqa.selenium.firefox.NotConnectedException The version of Firefox I have is Firefox version: 480b10 According to this I tried to update the server version library("RSelenium") startServer() unlink(system.file("bin", package = "RSelenium"), recursive = T) checkForServer(update = TRUE) remDr

问题 It seems that every time I update my OS, R, or any browsers Rselenium stops working. I can no longer use it with any browser -Firefox, Chrome, or PhantomJS. I've posted my code below. Session Info: sessionInfo() R version 3.3.2 (2016-10-31) Platform: x86_64-apple-darwin13.4.0 (64-bit) Running under: macOS Sierra 10.12.2 locale: [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached

问题 I'm using the RSelenium library with the argument browserName = "phantomjs" in the remoteDriver command, however I was looking to run a test where I specify the type of the proxy server. I've seen that proxy authentication is possible in, e.g. Java, with the code used shown here: ArrayList<String> cliArgsCap = new ArrayList<String>(); cliArgsCap.add("--proxy=address:port"); cliArgsCap.add("--proxy-auth=username:password"); cliArgsCap.add("--proxy-type=http"); DesiredCapabilities capabilities

问题 How should I set RSelenium Firefox profile under Mac OS X? I tried to replicate this code (for Windows) but Firefox keeps showing me the download popup. require(RSelenium) my_firefox_profile <- makeFirefoxProfile( list(browser.download.dir = "~/Downloads/tmp", browser.download.folderList = "2", browser.download.manager.showWhenStarting = "false", browser.helperApps.neverAsk.saveToDisk = "text/csv/xls")) RSelenium::startServer() remDr <- remoteDriver(extraCapabilities = my_firefox_profile)

问题 I'm trying to run RSelenium using the rsDriver function, but when I run rD <- rsDriver() I get a message telling me I need a newer version of Chrome: > 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

问题 I'm relatively new to R (and brand spanking new to scraping with R), so apologies in advance if I'm overlooking something obvious here! I've been trying to learn how to scrape with RSelenium by following this tutorial: https://rawgit.com/petrkeil/Blog/master/2017_08_15_Web_scraping/web_scraping.html#advanced-scraping-with-rselenium After running the following in Terminal (docker run -d -p 4445:4444 selenium/standalone-firefox), I tried to run the R code below, pulled with only slight

问题 I am using Rselenium to scrap following website: http://plovila.pomorstvo.hr/ Every time I have to enter 'NIB' field, execute and scrap all data. I am using Sys.time() function several time so my code is slow (cca 12 seconds for one NIB). I need to scrap around 200.000 NIB numbers which gives 30 days of scraping. I am interested if I can open multiple browsers locally or somehow in the cloud and make my scraping script faster. Is it possible to use parallel computing to overcome this issue?

问题 I tried to press control key successfully with: rD <- rsDriver (browser = 'chrome',chromever = "latest",port = 4445L) chrome_client <-rD$client chrome_client$sendKeysToActiveElement(list(key = "control")) But the problem is that I can't release this key, so it creates a new tab if I click another link. I searched on google and stackoverflow, but found no solutions for Rselenium yet. 回答1: It's not in documentation, but I tried to press control again, and another press released the keypress.