Gwindow Gwindow - 2 months ago 27
Java Question

jsoup posting and cookie

I'm trying to use jsoup to login to a site and then scrape information, I am running into in a problem, I can login successfully and create a Document from index.php but I cannot get other pages on the site. I know I need to set a cookie after I post and then load it when I'm trying to open another page on the site. But how do I do this? The following code lets me login and get index.php

Document doc = Jsoup.connect("http://www.example.com/login.php")
.data("username", "myUsername",
"password", "myPassword")
.post();


I know I can use apache httpclient to do this but I don't want to.

Answer

When you login to the site, it is probably setting an authorised session cookie that needs to be sent on subsequent requests to maintain the session.

You can get the cookie like this:

Connection.Response res = Jsoup.connect("http://www.example.com/login.php")
    .data("username", "myUsername", "password", "myPassword")
    .method(Method.POST)
    .execute();

Document doc = res.parse();
String sessionId = res.cookie("SESSIONID"); // you will need to check what the right cookie name is

And then send it on the next request like:

Document doc2 = Jsoup.connect("http://www.example.com/otherPage")
    .cookie("SESSIONID", sessionId)
    .get();