如何使用Jsoup登录我的大学网站？

Question

I am trying to come up with a Android app that needs some information on the university inner website. I have been trying to use Jsoup to login the website programmatically. Here is the code I have now:

import org.jsoup.Connection;
import org.jsoup.Connection.Method;
import org.jsoup.Jsoup;
//import org.jsoup.helper.Validate;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
//import org.jsoup.select.Elements;


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

public class Test {
    public static void main(String[] args) {
        Document doc;
        try {
            Connection.Response res = Jsoup
                    .connect(
                            "https://sso.bris.ac.uk/sso/login?service=https%3A%2F%2Fwww.cs.bris.ac.uk%2FTeaching%2Fsecure%2Funit-list.jsp%3Flist%3Dmine")
                    .execute();
            Map<String, String> cookies = res.cookies();
            System.out.println(cookies.keySet());
            Document fakepage = res.parse();
            Element fakelt = fakepage.select("input[name=lt]").get(0);
            Element fakeexecution = fakepage.select("input[name=execution]")
                    .get(0);
            Element fake_eventID = fakepage.select("input[name=_eventId]").get(
                    0);
            System.out.println("Hello World!");
            System.out.println(fakelt.attr("value"));
            System.out.println(fakeexecution.toString());
            System.out.println(fake_eventID.toString());
//          System.out.println(cookies.get("JSESSIONID"));
            String url="https://sso.bris.ac.uk/sso/login?service=https%3A%2F%2Fwww.cs.bris.ac.uk%2FTeaching%2Fsecure%2Funit-list.jsp%3Flist%3Dmine";
            System.out.println(url);
            Connection newreq = Jsoup
                    .connect(url)
                    .cookies(cookies).data("lt", fakelt.attr("value")).followRedirects(true).header("Connection", "keep-alive")
                    .header("Refer", " https://sso.bris.ac.uk/sso/login?service=https%3A%2F%2Fwww.cs.bris.ac.uk%2FTeaching%2Fsecure%2Funit-list.jsp%3Flist%3Dmine")
                    .header("Content-Type","application/x-www-form-urlencoded;charset=UTF-8")
                    .userAgent("Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:27.0) Gecko/20100101 Firefox/27.0")
                    .data("lt",fakelt.attr("value"))
                    .data("execution", fakeexecution.attr("value"))
                    .data("_eventID", fake_eventID.attr("value"))
                    .data("username", "aabbcc").data("password", "ddeeff")
                    .data("submit", "").method(Method.POST);
            Connection.Response newres = newreq.execute();
            doc = newres.parse();
            System.out.println(doc.toString());
            System.out.println(newres.statusCode());


        Map<String,String> newcookies = newres.cookies();
        doc = Jsoup.connect("https://www.cs.bris.ac.uk/Teaching/secure/unit-list.jsp?list=mine").cookies(newcookies).get();
        System.out.println(doc.toString());
//          System.out.println(doc.toString());
        } catch (IOException e) {
            System.out.println("Excepiton:");
            System.out.println(e.getMessage());
        }
    }
}

I completely faked a form to submit use Jsoup, and to get around the security cookies I first request the website once and then use the cookies it sent me to request the website again. The form has some hidden fields so I use the ones I got on my first request to fake it when I request it again. However this does not work. Is it possible to do it or the server has some advanced preventer against me doing so?

Answer 1

Do not use Jsoup to do this, it needs you to handle all the cookies yourself, instead, use Httpclient, if you use something from 4.0 onward it handle the cookies automatically. Much eaiser to work with.