這可以用硒做見https://github.com/ropensci/RSelenium。
require(RSelenium)
fprof <- makeFirefoxProfile(list(browser.download.dir = "C:\\temp"
, browser.download.folderList = 2L
, browser.download.manager.showWhenStarting = FALSE
, browser.helperApps.neverAsk.saveToDisk = "application/zip"))
RSelenium::startServer()
remDr <- remoteDriver(extraCapabilities = fprof)
remDr$open(silent = TRUE)
remDr$navigate("https://www.chicagofed.org/applications/bhc_data/bhcdata_index.cfm")
# click year 2012
webElem <- remDr$findElement("name", "SelectedYear")
webElems <- webElem$findChildElements("css selector", "option")
webElems[[which(sapply(webElems, function(x){x$getElementText()}) == "2012")]]$clickElement()
# click required quarter
webElem <- remDr$findElement("name", "SelectedQuarter")
Sys.sleep(1)
webElems <- webElem$findChildElements("css selector", "option")
webElems[[which(sapply(webElems, function(x){x$getElementText()}) == "4th Quarter")]]$clickElement()
# click button
webElem <- remDr$findElement("id", "downloadDataFile")
webElem$clickElement()