通过Django中的url上传文件

Question

I'm currently creating an app thats supposed to take a input in form of a url (here a PDF-file) and recognize this as a PDF and then upload it to a tmp folder i have on a server.

I have absolutely no idea how to proceed with this. I've already made a form which contains a FileField which works perfectly, but when it comes to urls i have no clue.

Thank you for all answers, and sorry about the lacking english skills.

Answer 1

The first 4 bytes of a pdf file are %PDF so you could just download the first 4 bytes from that url and compare them to %PDF . If it matches, then download the whole file.

Example:

import urllib2

url = 'your_url'
req = urllib2.urlopen(url)
first_four_bytes = req.read(4)

if first_four_bytes == '%PDF':
    pdf_content = urllib2.urlopen(url).read()
    # save to temp folder
else:
    # file is not PDF