flutter-io/http

import 'package:flutter/material.dart';
import 'dart:io';
import 'dart:convert';
import 'package:http/http.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        body: Column(
          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
          mainAxisSize: MainAxisSize.max,
//          verticalDirection: VerticalDirection.up,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            Row(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                Expanded(
                  child: OutlineButton(
                    onPressed: dartIo_get,
                    child: Text('io'),
                  ),
                ),
              ],
            ),
            Row(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                Expanded(
                  child: OutlineButton(
                    onPressed: http_get,
                    child: Text('http_get'),
                  ),
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
  
  void dartIo_get() async{
    var url = 'https://httpbin.org/ip';
    var httpClient = new HttpClient();

    String result;
    try {
      var request = await httpClient.getUrl(Uri.parse(url));
      var response = await request.close();
      if (response.statusCode == HttpStatus.OK) {
        var json = await response.transform(utf8.decoder).join();
        var data = jsonDecode(json);
        result = data['origin'];
      } else {
        result =
        'Error getting IP address:\nHttp status ${response.statusCode}';
      }
    } catch (exception) {
      result = 'Failed getting IP address';
    }

    print('dddddddddddddddd---------$result');
  }

  void http_get(){
      get('https://www.jianshu.com/p/782fde5088c0')
          .then((res) {
            print('mmmmmmm --- ${res.statusCode}');
            print('mmmmmmm --- ${res.body}');
        }
      );
  }

  void http_post(){
    post('', body: {'password':'e10adc3949ba59abbe56e057f20f883e', 'mobile':'13333333333'})
        .then((response) {
      print("post方式->status: ${response.statusCode}");
      print("post方式->body: ${response.body}");
     }
    );
  }
}