使用laravel社交名流后端通过社交帐户登录用户

我正在开发一个flatter应用程序，我想实现社交登录（Google和Facebook）

我的API是用Laravel实现的，并使用Laravel socialite对用户进行身份验证，还有后端、web前端（使用VueJs），现在我正在使用Flatter开发移动应用程序

web应用程序运行良好（使用vue social auth包）

我到目前为止所做的：

使用Flatter_google_登录来处理Flatter应用程序上的身份验证

已配置该软件包，我可以通过该软件包成功获取用户信息

我面临的问题：

我似乎没有做到的是将刚刚登录的用户发送到后端，以便提供应用内用户体验

这是vue social auth软件包提供的内容，也是我发送到后端的内容，它工作正常：

{code: "4/0AY0e-g442SMxdtLb_MVdQ63u1ydp48bbCRQco5Azoyf3y1rvYybDabyZGOvwAs7ZFJDQHA", scope: "email+profile+openid+https://www.googleapis.com/au…le+https://www.googleapis.com/auth/userinfo.email", authuser: "0", prompt: "consent"}

这就是

flatter\u google\u sign\u in

提供的内容（除了用户档案数据：

idToken: "",
accessToken: "",
serverAuthCode: "", 

serverAuthCode总是

null

我怎样才能使用相同的API逻辑，让用户通过社交帐户登录到flifter上

---

谢谢。

我已经解决了这个问题，经过一番挖掘，我发现

Laravel Socialite

具有使用内置令牌登录用户的功能：

引用社交名流文档： 如果您已经拥有用户的有效访问令牌，则可以使用Socialite的userFromToken方法检索其详细信息

---

显然，除了Firebase/some cloud API后端服务外，google登录在Flitter上不起作用。我使用的是本地Laravel API进行用户身份验证，因此添加google登录功能需要设置Firebase帐户/配置文件，下载googleservices.json文件并将其添加到Flitter项目中，如google_sign_in软件包中所述安装手册。您还需要导入firebase auth软件包

颤振代码（我使用颤振模块化模式，但如果您得到上面Hamza Mogni解释的想法，同样适用于Bloc/Provider）

import 'package:google_sign_in/google_sign_in.dart';
 import 'package:firebase_auth/firebase_auth.dart';

  final GoogleSignIn _googleSignIn = GoogleSignIn();
  final FirebaseAuth _auth = FirebaseAuth.instance;

  Future<LoginResponseModel> googleLoginResponse() async {
    
    String url = env['API_BASE_URL'] + '/api/auth/google';

    //click on google sign in. Get accessToken from google through googlesignin 
     plugin.
    //Send accessToken to socialite in backend to request/create user data

    GoogleSignInAccount googleSignInAccount = await _googleSignIn.signIn();
    if (googleSignInAccount == null) {
      print('Google Signin ERROR! googleAccount: null!');
      return null;
    }
    GoogleSignInAuthentication googleSignInAuthentication =
        await googleSignInAccount.authentication;
    
   //this is user access token from google that is retrieved with the plugin
    print("User Access Token: ${googleSignInAuthentication.accessToken}");
    String accessToken = googleSignInAuthentication.accessToken;
    
    //make http request to the laravel backend 
    final response =
        await http.post(
                  url,
                  body: json.encode({"token": accessToken}),
                  headers: {"Content-Type": "application/json"});
    if (response.statusCode == 200 || response.statusCode == 422) {
      return LoginResponseModel.fromJson(
        json.decode(response.body), // {'message':'Google signin successful'}
      );
    } else {
      throw Exception('Failed to load data!');
    }
  }

Future<LogoutResponseModel> logout() async {
    try {
      await _auth.signOut();
      await _googleSignIn.disconnect();
    } catch (e) {
      print('Failed to sign out ' + e.toString());
    }
    //api route to destroy sanctum token. santum token is added as authorization header
    var url = env['API_BASE_URL'] + "/api/logout";
    final response =
        await http.post(Uri.tryParse(url), headers: {'Bearer ' $sanctumtoken});
    if (response.statusCode == 200 || response.statusCode == 422) {
      return LogoutResponseModel.fromJson(
        json.decode(response.body),
      );
    } else {
      throw Exception('Failed to load data!');
    }
  }

public function requestTokenGoogle(Request $request) {
        // Getting the user from socialite using token from google
        $user = Socialite::driver('google')->stateless()->userFromToken($request->token);

        // Getting or creating user from db
        $userFromDb = User::firstOrCreate(
            ['email' => $user->getEmail()],
            [
                'email_verified_at' => now(),
                'first_name' => $user->offsetGet('given_name'),
                'last_name' => $user->offsetGet('family_name'),
                'avatar' => $user->getAvatar(),
            ]
        );

        // Returning response
        $token = $userFromDb->createToken('Laravel Sanctum Client')->plainTextToken;
        $response = ['token' => $token, 'message' => 'Google Login/Signup Successful'];
        return response($response, 200);
    }