如何在laravel 8中创建自定义身份验证？

use App\Extensions\JwtAuthGuard;

public function boot()
{
    $this->registerPolicies();

    Auth::extend('jwt', function ($app, $name, array $config) {
        return new JwtAuthGuard(Auth::createUserProvider($config['provider']), $app->make('request'));
    });
}

namespace App\Extensions;

use Illuminate\Contracts\Auth\Guard;
use Illuminate\Http\Request;
use Tymon\JWTAuth\Facades\JWTAuth;

class JwtAuthGuard implements Guard
{
    protected $provider;
    protected $request;

    public function __construct(UserProvider $provider, Request $request)
    {
        $this->provider = $provider;
        $this->request = $request;
    }

    public function user()
    {
        if ($this->request->hasHeader('Authorization')) {
            $token = $this->request->header('Authorization');
            // 解析验证 JWT token 的逻辑
            $user = JWTAuth::parseToken()->authenticate();
            return $user;
        }

        return null;
    }

    // 实现其他接口方法...
}

'defaults' => [
    'guard' => 'jwt',
    // ...
],

'guards' => [
    // ...
    'jwt' => [
        'driver' => 'jwt',
        'provider' => 'users',
    ],
],

php artisan make:middleware JwtMiddleware

namespace App\Http\Middleware;

use Closure;
use Illuminate\Support\Facades\Auth;

class JwtMiddleware
{
    public function handle($request, Closure $next)
    {
        if (Auth::guard('jwt')->user()) {
            return $next($request);
        }

        return response('Unauthorized.', 401);
    }
}

protected $routeMiddleware = [
    // ...
    'jwt.auth' => \App\Http\Middleware\JwtMiddleware::class,
    // ...
];

Route::group(['middleware' => 'jwt.auth'], function () {
    Route::get('/protected', function () {
        return 'This route requires authentication.';
    });
});