dependencies:

  json_annotation: ^2.4.0

dev_dependencies:

  fluttertoast: ^2.0.3

  json_serializable: ^3.0.0

  build_runner: ^1.6.0

import 'package:json_annotation/json_annotation.dart';

part 'author.g.dart';

@JsonSerializable() //注解

class Author {

    String name;

    String title;

    int id;

    Author({this.name, this.title, this.id});

    factory Author.fromJson(Map<String, dynamic> json) => _$AuthorFromJson(json);

    Map<String, dynamic> toJson(Author instance) => _$AuthorToJson(instance);

}

import 'package:flutter/material.dart';

import '../model/author.dart';

class NoticePage extends StatefulWidget{

    @override

    _NoticePageState createState() => _NoticePageState();

}

class _NoticePageState extends State<NoticePage>{

    void _getData() async {

        var obj = {"name":"whisky", "title":'阿发生的发生阿斯蒂芬暗示法按时', "id":2020};

        var c = Author.fromJson(obj);

        print("作者的名字是："+c.name);

        print("作者的名字是："+c.title);

        print('${c.id}');

        print('${c.id.runtimeType}');

        print(c);

    }

    @override

    void initState(){

        super.initState();

        _getData();

    }

    @override

    Widget build(BuildContext context){

        final _main = Container(

            width: MediaQuery.of(context).size.width,

            padding: EdgeInsets.all(30),

            child: Column(

                children: [

                    Text('notice')

                ],

            ),

        );

        return Scaffold(

            appBar: AppBar(

                centerTitle: true,

                title: Text('我的消息',style: TextStyle(color: Colors.white)),

            ),

            body: _main,

        );

    }

}