Question

我是 Flutter 和开发应用程序的新手，但我面临着一个关于对 asp.net 核心 API 方法的发布请求的问题。下面是我用来将数据发布到 asp.net 核心 API 方法的颤振代码。

Future registerUser(
    String userFullName, String username, String email, String password) async {
  var body = jsonEncode({
    "UserFullName": userFullName,
    "Username": username,
    "Email": email,
    "Password": password
  });
  final response = await http.post(
      Uri.parse(GetURI.baseURI() + 'Account/Register'),
      body: body,
      headers: {"content-type": "application/json"});
  print("Hello Body! " + response.statusCode.toString());
  print(response.body);
  return null;
}

单击按钮时，我正在调用上述函数来发布数据，但出现错误。点击按钮的代码如下：

onPressed: () async {
                  final validationSuccess = _formKey.currentState!.validate();
                  if (validationSuccess) {
                    _formKey.currentState!.save();
                    final formData = _formKey.currentState!.value;
                    final userData = await registerUser(
                        _formKey.currentState!.fields['username']!.value,
                        _formKey.currentState!.fields['email']!.value,
                        _formKey.currentState!.fields['email']!.value,
                        _formKey.currentState!.fields['password']!.value);
                    print(userData!.userFullName);
                    ScaffoldMessenger.of(context).showSnackBar(SnackBar(
                      content: Text('$formData'),
                      duration: Duration(seconds: 5),
                    ));
                  }
                }

点击按钮时，它给了我如下错误：

[ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: HandshakeException: Handshake error in client (OS Error:
CERTIFICATE_VERIFY_FAILED: unable to get local issuer certificate(handshake.cc:359))

这是我返回 URL 的类代码：

class GetURI {
  static String baseURI() {
    return 'https://10.103.78.29:44318/api/';
  }
}

我的 main.dart 文件

import 'dart:io';

import 'package:bugsmashmobileapp/Screen/LoginScreen/login_body.dart';
import 'package:bugsmashmobileapp/Screen/SignupScreen/signup_body.dart';
import 'package:bugsmashmobileapp/Screen/WelcomeScreen/getting_started_screen.dart';
import 'package:flutter/material.dart';

class MyHttpOverrides extends HttpOverrides {
  @override
  HttpClient createHttpClient(SecurityContext? context) {
    return super.createHttpClient(context)
      ..badCertificateCallback =
          (X509Certificate cert, String host, int port) => true;
  }
}

void main() {
  HttpOverrides.global = new MyHttpOverrides();
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'BUGSMASH APP',
      theme: ThemeData(
          primarySwatch: Colors.blue, scaffoldBackgroundColor: Colors.white),
      home: GettingStartedScreen(),
      routes: {
        SignupScreen.routeName: (context) => SignupScreen(),
        LoginScreen.routeName: (context) => LoginScreen()
      },
    );
  }
}

我尝试了很多方法并搜索了很多但无法找到解决此错误的好方法。如果有人可以提供帮助，我们将不胜感激。

Answer 1

当我尝试 ngrok 时，问题就解决了。首先，我在 ngrok (Click here to go to website) 上创建了一个帐户，然后您需要安装其软件以生成 URL 并将其转发到您的 API 项目。然后你就可以在你的 Flutter 项目中使用那个 URL，没有任何问题。

如何解决此错误 CERTIFICATE_VERIFY_FAILED: 无法获得本地颁发者证书(handshake.cc:359))

1 个答案: