I have a crawler that automates the login and crawling for a website, but since the login was changed it is not working anymore. 
I am wondering, can I feed the browser cookie (aka, I manually log-in) to my HTTP request? Is there anything particularly wrong in principle that wouldn't make this work? How do I find the browser cookies relevant for the website? 
If it works, how do I get the "raw" cookie strings I can stick into my HTTP request?
I am quite new to this area, so forgive my ignorant questions. I can use either PYthon or Java
When you send the login information (and usually in response to many other requests) the server will set some cookies to the client, you must keep track of them and send them back to the server for each subsequent request.
A full implementation would also keep track of the time they are supposed to be stored.
How to use browser cookies programmatically