如何在python中使用urllib2发送cookie和phpssid？

Question

I wonder how can I send cookie and phpssid with urllib2 in python? Actually I want to read a page I've logged in with my browser, but when I try to read it with this script I encounter a text which seems to say that you've missed something. My script :

#!/usr/bin/python
import urllib2
f = urllib2.urlopen('http://mywebsite.com/sub/create.php?id=20')
content = f.read()
file = open('file.txt', 'w')
file.write(content)
file.close()

The error message I save instead of the real page :

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/number/domains/1number.com/public_html/s4/app/mywidgets.php:1) in /home/number/domains/1number.com/public_html/s4/app/mywidgets.php on line 23

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/number/domains/1number.com/public_html/s4/app/mywidgets.php:1) in /home/number/domains/1number.com/public_html/s4/app/mywidgets.php on line 23

Warning: Cannot modify header information - headers already sent by (output started at /home/number/domains/1number.com/public_html/s4/app/mywidgets.php:1) in /home/number/domains/1number.com/public_html/s4/lib/webservice.php on line 0

What is the exact problem?(Please give me a simple way to implement what I want)

Thanks in advance

Answer 1

For the SID, one of the ways to send that is as part of the query string, and you're already doing that. At least I assume that's what the id=20 part of your URL is.

For cookies, everything you want is in cookielib .

Just creating a CookieJar to use for a session with the server is trivial. If you want to import cookies from your browser, there are three possibilities:

1. If your browser uses the old Netscape cookie file format, you can use FileCookieJar .
2. If your browser uses a sqlite database (as at least Firefox and Safari/Chrome do), use the sqlite3 module to read it, and populate a CookieJar manually.
3. If worst comes to worst, copy and paste the cookies from your browser into your script as hardcoded strings and popular a CookieJar manually.

If you don't want to read the docs on how to use cookielib , just see the examples at the end, which show how to use a CookieJar with urllib2 , which is exactly what you want to do.

If you have a problem, read the docs.

Meanwhile, what you're showing us are (a) warnings, not errors, and (b) obviously a problem on the server side, not your script. The server should never be spewing out a bunch of warnings and an otherwise-blank page. If you, or one of your coworkers, is responsible for the server code, that needs to be fixed first (and your current simple Python script can serve as a great regression test case).