Dartpad使用基本身份验证发出请求

如何通过以下方法获得basic auth request分对httpbin.org/basic-auth分

• http.get()件作品
• http.Request()失败

带着dart .这是my dartpad-demo-code

什么在起作用？

使用get()终于奏效了

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

void main(List<String> arguments) async {

  final url_httpbin = Uri.https('httpbin.org', '/basic-auth/myuser/mypasswd');  
  
  var base64Encoder = convert.Base64Encoder(); 
  var creds64 = base64Encoder.convert('myuser:mypasswd'.codeUnits);
  Map<String, String> authHeader = {'Authorization':'Basic $creds64'};  
    
  final response = await http.get(url_httpbin, 
       headers: authHeader); // sending headers with basic auth

  if (response.statusCode == 200) {
    final jsonResponse = convert.jsonDecode(response.body);
    print('Repsonse $jsonResponse');
  } else {
    print('Request failed with status: ${response.statusCode}.');
  }
}

Question How can Request be used

我try 使用Request()类失败了

var request = http.Request('GET', url_httpbin);
request.headers(authHeader); // <-- error 

最后一行返回

Error compiling to JavaScript: lib/main.dart:23:18: Error: 'headers' isn't a function or method and can't be invoked.
request.headers(authHeader); ^^^^^^^ Error: Compilation failed.

或者这个

 request.headers = authHeader; // error 

结果是

编译为JavaScript时出错:lib/main.dart:23:11:Error:the setter 没有为类"Request."定义"Headers".

• ‘Request.Dart’来自‘Package:http/src/quest.dart’(‘/app/local_pub_cache/hosted/pub.dev/http-1.1.0/lib/src/request.dart’). Quest.Headers=authHeader； ^错误:编译失败.

从Request class documentation开始，我不清楚如何使用这个类来发出http请求.