如何在Flutter中对JSON数据进行文本搜索？

import 'dart:convert';

void main() {
  String jsonData = '''
    {
      "users": [
        {
          "id": 1,
          "name": "John Doe",
          "email": "john@example.com"
        },
        {
          "id": 2,
          "name": "Jane Smith",
          "email": "jane@example.com"
        }
      ]
    }
  ''';

  Map<String, dynamic> data = json.decode(jsonData);

  List<Map<String, dynamic>> searchJsonData(String searchText, dynamic jsonData) {
    List<Map<String, dynamic>> results = [];

    if (jsonData is Map) {
      jsonData.forEach((key, value) {
        if (value.toString().contains(searchText)) {
          results.add({key: value});
        }

        if (value is Map || value is List) {
          results.addAll(searchJsonData(searchText, value));
        }
      });
    } else if (jsonData is List) {
      jsonData.forEach((item) {
        results.addAll(searchJsonData(searchText, item));
      });
    }

    return results;
  }

  String searchText = "John";
  List<Map<String, dynamic>> searchResults = searchJsonData(searchText, data);

  print("Search results for '$searchText':");
  searchResults.forEach((result) {
    result.forEach((key, value) {
      print("$key: $value");
    });
  });
}