如何在flutter中解析复杂的json

dependencies:
  http: ^0.13.3

import 'package:http/http.dart' as http;

Future<Map<String, dynamic>> fetchJSONData() async {
  final response = await http.get(Uri.parse('https://example.com/data.json'));
  if (response.statusCode == 200) {
    return json.decode(response.body);
  } else {
    throw Exception('Failed to fetch JSON data');
  }
}

import 'dart:convert';

Map<String, dynamic> jsonData = await fetchJSONData();

String name = jsonData['name'];
int age = jsonData['age'];
List<String> hobbies = List<String>.from(jsonData['hobbies']);

List<Map<String, dynamic>> users = List<Map<String, dynamic>>.from(jsonData['users']);
for (var user in users) {
  String username = user['username'];
  String email = user['email'];
  // 其他操作...
}