Dart3

import 'package:http/http.dart';
import 'package:html/dom.dart' show Document;
import 'package:html/parser.dart' show parse;
https://vm.tiktok.com/78Dc1Y/?utm_source=copy_link&utm_campaign=client_share&utm_medium=android&share_app_name=musically&share_iid=6817857825445332741
class Fetch {
  Request rek;
  String mth;
  bool follow;
  Map<String, String> body;
  Map<String, String> header = {
    'User-Agent':
        'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.116 Safari/537.36',
    'Content-Type': 'application/x-www-form-urlencoded'
  };

  Fetch(this.mth, {header, this.body, this.follow: false}) {
    if (header != null) this.header.addAll(header);

    rek = Request(
        mth, Uri.parse('http:/'));
    rek.headers.addAll(this.header);
    //rek.followRedirects = follow;
  }

  Future<StreamedResponse> get sg => rek.send();

  Future<StreamedResponse> get sp => (rek
        //..headers.addAll(header)
        ..bodyFields = body)
      .send();

  Future<StreamedResponse> send() {
    if (mth == 'GET') return sg;
    if (mth == 'POST') return sp;
    throw 'Can\'t create $mth.';
  }
}

class DoLogin {
  Map<String, String> pl = {'btEnt': 'Entra'};
  String matricula;
  String senha;

  DoLogin(this.matricula, this.senha);

  login() async {
    print('dologin login');

    pl['txtTexto'] = matricula;

    await Fetch('GET').send().then((response) async {
      await response.stream.bytesToString().then((rHtml) async {
        Document document = parse(rHtml);
        var p = document.getElementsByTagName("[name*='__']");
        for (var i in p) {
          pl[i.attributes['name']] = i.attributes['value'];
        }
        await Fetch('POST', body: pl).send().then((response2) async {
          var cookie = {'Cookie': response2.headers['set-cookie']};
          print(cookie);
          await response2.stream.bytesToString().then((rHtml2) async {
            var document2 = parse(rHtml2);
            pl.clear();
            pl.addAll({'btEnt': 'Entra', 'txtTexto': senha});
            var p2 = document2.getElementsByTagName("[name*='__']");
            for (var i in p2) {
              pl[i.attributes['name']] = i.attributes['value'];
            }

            var d2 = document2.querySelector("#lblMensagem");
            print(d2.text);

            await Fetch('POST', body: pl, header: cookie, follow: true)
                .send()
                .then((response3) async {

                  print(response3.statusCode);
                  print(response3.headers);




              await response3.stream.bytesToString().then((rHtml3) {
                print(rHtml2);
                var document3 = parse(rHtml3);
                print(document3.body);
                var d3 = document3.querySelector("#lblMensagem");
                if (d3 != null) print(d3.text);

              });

            });
          });
        });
      });
    });
  }
}

main() {
  DoLogin('456', '456').login();
}




import 'dart:async';
import 'dart:io';
import 'package:html/parser.dart' show parse;


void main() {
  new File('html.txt').readAsString().then((String contents) {
    List lis = [];
    var doc = parse(contents);
    var tab = doc.querySelectorAll('#masterBody_dgPonto tr');
    for(var i in tab) {
      var cada = i.text.split('\n                ');
      cada.removeAt(0);
      lis.add(cada);
    }
    lis.removeLast();
    print(lis);

  });
}