如何从post API flutter中检索数据

dependencies:
  http: ^0.13.4

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

Future<void> fetchData() async {
  final response = await http.post(
    Uri.parse('your_post_api_url_here'),
    headers: <String, String>{
      'Content-Type': 'application/json; charset=UTF-8',
    },
    body: jsonEncode(<String, String>{
      'key1': 'value1',
      'key2': 'value2',
    }),
  );

  if (response.statusCode == 200) {
    // 解析响应的JSON数据
    Map<String, dynamic> data = jsonDecode(response.body);

    // 进行数据处理
    // ...

    // 打印检索到的数据
    print(data);
  } else {
    // 处理请求错误
    print('请求错误: ${response.statusCode}');
  }
}

fetchData();