在flutter中post请求复杂的json到api

import 'package:dio/dio.dart';

void main() async {
  // 创建Dio实例
  Dio dio = Dio();

  // 设置请求的Content-Type为application/json
  dio.options.headers['Content-Type'] = 'application/json';

  // 构建请求数据
  Map<String, dynamic> requestData = {
    'name': 'John Doe',
    'age': 30,
    'email': 'johndoe@example.com'
    // 其他复杂的JSON数据
  };

  try {
    // 发送POST请求
    Response response = await dio.post('https://api.example.com/api', data: requestData);

    // 处理响应数据
    if (response.statusCode == 200) {
      print('请求成功');
      print(response.data);
    } else {
      print('请求失败');
    }
  } catch (e) {
    print('请求异常: $e');
  }
}