在Flutter中解析Jackson风格的JSON

dependencies:
  json_annotation: ^4.0.0

dev_dependencies:
  build_runner: ^2.0.0
  json_serializable: ^4.0.0

{
  "name": "John Doe",
  "age": 25,
  "email": "johndoe@example.com"
}

import 'package:json_annotation/json_annotation.dart';

part 'user.g.dart';

@JsonSerializable()
class User {
  final String name;
  final int age;
  final String email;

  User(this.name, this.age, this.email);

  factory User.fromJson(Map<String, dynamic> json) => _$UserFromJson(json);
  Map<String, dynamic> toJson() => _$UserToJson(this);
}

flutter pub run build_runner build

import 'user.dart';
import 'dart:convert';

void main() {
  String jsonStr = '{"name": "John Doe", "age": 25, "email": "johndoe@example.com"}';
  Map<String, dynamic> json = jsonDecode(jsonStr);
  User user = User.fromJson(json);

  print(user.name); // 输出：John Doe
  print(user.age); // 输出：25
  print(user.email); // 输出：johndoe@example.com
}