Flutter convert xlsx to List<Object> - excel

Question

I have an xlsx excel table and I need to convert it into a List<Object> and take just the following columns: D, F, H, J, L. I'm trying everything but nothing works.
I'm using the following plugin to do it:
file_picker
excel
Does anyone know how can I convert it?
Table
Here is my example code:
import 'package:adminpanelweb/models/import_users.dart';
import 'package:excel/excel.dart';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';
Future importUsers(BuildContext context, String palaceId) async {
FilePickerResult? pickedFile = await FilePicker.platform.pickFiles(
type: FileType.custom,
allowedExtensions: ['xlsx'],
allowMultiple: false,
);
if (pickedFile != null) {
var bytes = pickedFile.files.single.bytes;
var excel = Excel.decodeBytes(bytes!);
List<ImportUsers> users = [];
List<String> stringList = [];
for (var table in excel.tables.keys) {
for (var rows in excel.tables[table]!.rows) {
// print(
// '${rows.toString().isNotEmpty ? rows.map((e) => e?.value).toList() : ''}',
// );
stringList.add(
'${rows.toString().isNotEmpty ? rows.map((e) => e?.value).toList() : ''}');
}
}
final regExp = RegExp(r'(?:\[)?(\[[^\]]*?\](?:,?))(?:\])?');
final input = stringList.toString();
final result = regExp
.allMatches(input)
.map((m) => m.group(1))
.map((String? item) => item?.replaceAll(RegExp(r'[\[\]]'), ''))
.map((m) => [m])
.toList();
for (var items in result) {
users = items.map((e) {
return {
"field1": e?[0],
"WEB": e?[1],
"R": e?[2],
"Denominazione": e?[3],
"Data Uscita": e?[4],
"Codice Fiscale": e?[5],
"Partita IVA": e?[6],
"Username": e?[7],
"field9": e?[8],
"Password": e?[9],
"Profilo": e?[10],
"Email": e?[11],
};
}).toList() as List<ImportUsers>;
print(items);
}
// print('sadasdasdasdsad ${users.length}');
}
}
After some hours I solved as it:
Future importUsers(BuildContext context, String palaceId) async {
FilePickerResult? pickedFile = await FilePicker.platform.pickFiles(
type: FileType.custom,
allowedExtensions: ['xlsx'],
allowMultiple: false,
);
if (pickedFile != null) {
List<User> xlsxToList = [];
var bytes = pickedFile.files.single.bytes;
var excel = Excel.decodeBytes(bytes!);
for (var table in excel.tables.keys) {
for (var row in excel.tables[table]!.rows) {
xlsxToList.add(
User(
userEmail: row[11]?.value.toString(),
userUsername: row[7]?.value.toString(),
userName: row[3]?.value.toString(),
userCf: row[5]?.value.toString(),
userPassword: row[9]?.value.toString(),
),
);
}
}
xlsxToList.removeAt(0);
print('__________ ${userToJson(xlsxToList)}');
}
}