import java.io.IOException;
import java.util.Map;

import org.jsoup.Connection;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;


public class jsouppost{

    public static void main(String[] args ){

        try {
            Connection.Response res = Jsoup.connect("https://login.szn.cz/")
                    .data("login-username", "muj_mail", "login-password", "moje_heslo")
                    .method(Connection.Method.POST)
                    .execute();
            //  Document doc = res.parse();
            //String sessionId = res.cookie("SESSIONID");


            Map<String, String> cookies = res.cookies();

            Document doc2 = Jsoup.connect("https://login.szn.cz/")
                    .cookies(cookies)
                    .get();

            System.out.println(doc2.text());
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }
}