import 'dart:async';
// import 'dart:io';
// import 'package:dio/dio.dart';

Map<String, dynamic> optHeader = {
  'accept-language': 'zh-cn',
  'content-type': 'application/json'
};

class NetUtil {

  static Future get(String url, [Map<String, dynamic> params]) async {
    
  }

}