laravel获取不到session

session可以存储但是无法获取 修改 app/http/kernel.php文件

protected $middlewareGroups = [
    'web' => [
        \App\Http\Middleware\EncryptCookies::class,
        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
        \Illuminate\Session\Middleware\StartSession::class,
         \Illuminate\Session\Middleware\AuthenticateSession::class, #这句话本来是注释掉的，开启就可以了！
        \Illuminate\View\Middleware\ShareErrorsFromSession::class,
        \App\Http\Middleware\VerifyCsrfToken::class,
        \Illuminate\Routing\Middleware\SubstituteBindings::class,
    ],

    'api' => [
        'throttle:60,1',
        'bindings',
    ],
];

如果实在构造方法中获取不到session

$this->middleware(function() {
            $this->admin = session('admin');
            $this->isLogin = $this->admin == null ? false : true;
        });