Java: logging into a website using Jsoup

Question

First let me point out that I am very new to programming, so if I am missing something obvious, I'm sorry.

I am trying to write a program that allows you to enter this site, but I find it difficult to understand how to enter my own lines in the email and password fields. I'm also not quite sure how to check if the login passed or not ...

This is my code:

public static void main(String[] args) throws Exception {
    String loginURL = "https://www.skanetrafiken.se/inloggning?ReturnUrl=%2fmitt-konto%2fse-saldo-och-ladda-kort%2f"; // URL of the login page
    String accountURL = "https://www.skanetrafiken.se/mitt-konto/se-saldo-och-ladda-kort/"; // The URL you get to after successfully logging in

    Document res = Jsoup
            .connect(loginURL)
            .data("loginInputModel.Email", "[e-mail]") //Not sure if these are the correct values to be changed or if this even changes them
            .data("loginInputModel.Password", "myPassword")
            .post();

    System.out.println(res); // What should be printed to check to see if it worked?
}

This seems like a lot of examples I've seen, but it doesn't seem to work ...

Answer 1

, HTTP, , . , :

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

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

public class Test {

    public static void main(String[] args) throws IOException {

        // We need run initial request to obtain RequestVerificationToken
        String initialURL = "https://www.skanetrafiken.se/inloggning";
        Document doc = Jsoup
                .connect(initialURL)
                .get();

        String requestVerificationToken = doc.select("input[name=__RequestVerificationToken]").get(0).val();

        // Do login (all headers and more  important all  form fields should be populated)
        String loginURL = "https://www.skanetrafiken.se/inloggning/LoginPost/";
        Response res = Jsoup.connect(loginURL)
                .header("Accept", "*/*")
                .header("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8")
                .header("Origin", "https://www.skanetrafiken.se")
                .header("X-Requested-With", "XMLHttpRequest")
                .header("Referer", "https://www.skanetrafiken.se/inloggning")
                .data("__RequestVerificationToken", requestVerificationToken)
                .data("loginInputModel.ReturnUrl", "")
                .data("loginInputModel.Role", "Private")
                .data("loginInputModel.Email", "<email>")
                .data("loginInputModel.Password", "<password>")
                .data("X-Requested-With", "XMLHttpRequest")
                .userAgent("Mozilla/5.0")
                .ignoreContentType(true)
                .method(Method.POST)
                .execute();

        // Keep logged in (store cookies for next calls)
        Map<String, String> cookies = res.cookies();

        // Request a desired page
        String accountURL = "https://www.skanetrafiken.se/mitt-konto/se-saldo-och-ladda-kort/";
        Document doc2 = Jsoup
                .connect(accountURL)
                .cookies(cookies)
                .get();

        // Work with the doc
        System.out.println(doc2);
    }
}