在flutter中使用mysql进行字段搜索

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

Future<List<dynamic>> searchField(String keyword) async {
  final url = 'http://your-backend-url/search'; // 替换为后端接口地址
  
  final response = await http.post(url, body: {'keyword': keyword});
  
  if (response.statusCode == 200) {
    final data = jsonDecode(response.body);
    return data['results'];
  } else {
    throw Exception('Search failed.');
  }
}

class SearchPage extends StatefulWidget {
  @override
  _SearchPageState createState() => _SearchPageState();
}

class _SearchPageState extends State<SearchPage> {
  String _keyword = '';
  List<dynamic> _results = [];

  void _performSearch() {
    searchField(_keyword).then((results) {
      setState(() {
        _results = results;
      });
    }).catchError((error) {
      print(error);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Search'),
      ),
      body: Column(
        children: [
          TextField(
            onChanged: (value) {
              setState(() {
                _keyword = value;
              });
            },
            decoration: InputDecoration(
              labelText: 'Keyword',
            ),
          ),
          ElevatedButton(
            onPressed: _performSearch,
            child: Text('Search'),
          ),
          Expanded(
            child: ListView.builder(
              itemCount: _results.length,
              itemBuilder: (context, index) {
                return ListTile(
                  title: Text(_results[index]['name']),
                  subtitle: Text(_results[index]['description']),
                );
              },
            ),
          ),
        ],
      ),
    );
  }
}