How do I download a file over HTTP using Ruby?

Question

score 21 · Answer 1 · answered Apr 20 '15 at 09:04

21

Probably the shortest way to download a file:

require 'open-uri'
download = open('http://example.com/download.pdf')
IO.copy_stream(download, '~/my_file.pdf')

answered Apr 20 '15 at 09:04

Clemens Helm

3,530
1
19
13

1

Thanks @Clemens, this solution Just Worked. You might consider answering this here, too: https://stackoverflow.com/questions/2263540/how-do-i-download-a-binary-file-over-http – Gabe Kopley Jun 19 '15 at 00:10

score 12 · Answer 2 · answered Nov 07 '13 at 15:01

12

You can use open-uri, which is a one liner

require 'open-uri'

content = open('http://example.com').read

answered Nov 07 '13 at 15:01

KrauseFx

11,234
6
45
53

score 11 · Answer 3 · answered Dec 09 '09 at 21:59

11

require 'net/http'
#part of base library
Net::HTTP.start("your.webhost.com") { |http|
  resp = http.get("/yourfile.xml")
  open("yourfile.xml", "wb") { |file|
    file.write(resp.body)
  }
}

answered Dec 09 '09 at 21:59

MattMcKnight

8,081
27
34

score 5 · Answer 4 · answered Dec 09 '09 at 21:58

5

There are several ways, but the easiest is probably OpenURI. This blog post has some sample code, and also goes over Net::HTTP (with Hpricot) and Rio.

answered Dec 09 '09 at 21:58

Jordan Running

97,653
15
175
173

The easiest, and the most dangerous. OpenURI patches Kernel#open, and if any user input ever gets close to the string you're about to open, the door is open for both reading any file on the system and remote code execution. – haslo Jun 14 '18 at 12:41

score 4 · Answer 5 · answered Dec 09 '09 at 21:59

4

Simple...

response = Net::HTTP.get_response(URI.parse("yourURI"))

answered Dec 09 '09 at 21:59

JRL

74,629
18
94
144

How do I download a file over HTTP using Ruby?

5 Answers5

Linked