使用RSelenium无法直接上传文件的技术求助

你找错了操作元素：upload_locations是网站用来唤起文件选择对话框的美化按钮，而只有<input type="file">类型的元素才能直接接收文件路径，普通按钮无法通过sendKeysToElement传递文件路径。

1. 定位页面中真实的文件上传输入元素（PRISM页面中该元素的id为location_file）
2. 直接向这个元素传递文件路径，无需点击按钮

# Set up RSelenium -------------------------------------------------------
## load packages ----
library(RSelenium)
library(rvest)
library(tidyverse)
library(netstat)
library(here)
library(dplyr)
library(readr)

##Set Default download folder ----
eCaps <- list(
  chromeOptions =
    list(prefs = list(
      "profile.default_content_settings.popups" = 0L,
      "download.prompt_for_download" = FALSE,
      "download.default_directory" = gsub(pattern = '/', replacement = '\\\\', x = here("WebData")) # download.dir
    )
    )
)
default_folder = here("WebData")
## Open a chrome browser session with RSelenium ----
rs_driver_object <-rsDriver(
  browser = 'chrome',
  chromever ='108.0.5359.71',
  port = free_port(),
  extraCapabilities = eCaps # 补上原代码遗漏的配置参数
)

remDr <- rs_driver_object$client

##Input Locations File
LocationFile <- gsub(pattern = "/", replacement = "\\\\", x = here("InputData/prism_rr_precip_stations.csv"))

#Navigate to PRISM Explorer webpage----
URL <- "https://prism.oregonstate.edu/explorer/bulk.php"
remDr$navigate(URL)

# 替换原有上传逻辑：定位真实文件输入元素并传递路径
file_input <- remDr$findElement(using = "id", value = "location_file")
file_input$sendKeysToElement(list(LocationFile))

• 原代码中rsDriver调用时未传入extraCapabilities = eCaps，导致你设置的下载目录等配置未生效，修正代码已补上该参数。
• 确保LocationFile是绝对路径，here()生成的路径符合要求，相对路径可能导致上传失败。

内容的提问来源于stack exchange，提问作者Paul NoCal