有什么想法为什么我不能下载R的xlsx？

Question

This is the page: https://ceegex.hu/en/market-data/daily-data?market_data_day_filter%5BstartDate%5D=2018-03-08&market_data_day_filter%5BendDate%5D=2018-03-30

where we got "download as xlsx" button. The address of this button is: https://ceegex.hu/en/market_data/day/export.xlsx?startDate=2018-03-08&endDate=2018-03-30&_format=xlsx

This address downloads a xlsx file. I want to do the same with R so I've written: download.file("https://ceegex.hu/en/market_data/day/export.xlsx?startDate=2018-03-08&endDate=2018-03-30&_format=xlsx", "myfile.xlsx")
but I got errors like Error in download.file , cannot open URL .

Answer 1

The problem is that the file don't exist in the website, this is created when you press the button. Try it using the curl method:

download.file("https://ceegex.hu/en/market_data/day/export.xlsx?startDate=2018-03-08&endDate=2018-03-30&_format=xlsx", 
              "myfile.xlsx", method = "curl")

Answer 2

Try it this way.

target = "https://ceegex.hu/en/market_data/day/export.xlsx?startDate=2018-03-08&endDate=2018-03-30&_format=xlsx"
dest = 'downloaded_file.xls'

download.file(url = target, destfile = dest, mode='wb')