Вы можете скопировать и вставить полный код ниже
Вы можете использовать пакет https://pub.dev/packages/jwt_decode для анализа токена JWT
фрагмент кода
import 'package:jwt_decode/jwt_decode.dart';
var token = 'eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWUsImVtYWlsIjoiYUBiLmNvbSIsImp0aSI6ImI5ZDRiMTBmLTc4YWEtNGQzNy04OTRjLTQ0NjJkMGI2ZDUwYyIsImlhdCI6MTU4MzQ1OTk3OSwiZXhwIjoxNTgzNDYzNjE2fQ.D5cMT_nMLcTlZLgW7DbGs_cxZ8mpyOsAzI68JFPpboA';
var payload = Jwt.parseJwt(token);
print(payload);
print(payload["email"]);
вывод полного кода
I/flutter (24248): {sub: 1234567890, name: John Doe, admin: true, email: a@b.com, jti: b9d4b10f-78aa-4d37-894c-4462d0b6d50c, iat: 1583459979, exp: 1583463616}
I/flutter (24248): a@b.com
полный код
import 'package:flutter/material.dart';
import 'package:jwt_decode/jwt_decode.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
var token = 'eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWUsImVtYWlsIjoiYUBiLmNvbSIsImp0aSI6ImI5ZDRiMTBmLTc4YWEtNGQzNy04OTRjLTQ0NjJkMGI2ZDUwYyIsImlhdCI6MTU4MzQ1OTk3OSwiZXhwIjoxNTgzNDYzNjE2fQ.D5cMT_nMLcTlZLgW7DbGs_cxZ8mpyOsAzI68JFPpboA';
var payload = Jwt.parseJwt(token);
print(payload);
print(payload["email"]);
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headline4,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}