在flutter中无法将json转换为listview

dependencies:
  http: ^0.13.3
  flutter_bloc: ^7.3.0

[
  {
    "id": 1,
    "name": "John"
  },
  {
    "id": 2,
    "name": "Jane"
  }
]

class User {
  final int id;
  final String name;

  User({required this.id, required this.name});

  factory User.fromJson(Map<String, dynamic> json) {
    return User(
      id: json['id'],
      name: json['name'],
    );
  }
}

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

class UserService {
  Future<List<User>> getUsers() async {
    final response = await http.get(Uri.parse('https://example.com/users.json'));

    if (response.statusCode == 200) {
      final List<dynamic> jsonList = json.decode(response.body);
      return jsonList.map((json) => User.fromJson(json)).toList();
    } else {
      throw Exception('Failed to load users');
    }
  }
}

import 'package:flutter/material.dart';

class UserListPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('User List'),
      ),
      body: FutureBuilder<List<User>>(
        future: UserService().getUsers(),
        builder: (context, snapshot) {
          if (snapshot.hasData) {
            final users = snapshot.data!;
            return ListView.builder(
              itemCount: users.length,
              itemBuilder: (context, index) {
                final user = users[index];
                return ListTile(
                  title: Text(user.name),
                );
              },
            );
          } else if (snapshot.hasError) {
            return Text('Error: ${snapshot.error}');
          } else {
            return CircularProgressIndicator();
          }
        },
      ),
    );
  }
}