Question

 protected $middleware = [
     \App\Http\Middleware\Syspoint::class,
]

use Session;
class Syspoint
{
    echo \Session::get('syspoint');
}

每次页面请求时都需要运行中间件，中间件包含会话。

我放在protected $middleware内，但全局中间件无法获得会话。

Answer 1

您正在调用Session但尚未启动。

如果您需要在中间件中使用Session，则必须将其放在密钥protected $middlewareGroups下的属性web中，并在调用StartSession之后，即：

 protected $middlewareGroups
    'web' => [
        \App\Http\Middleware\EncryptCookies::class,
        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
        \Illuminate\Session\Middleware\StartSession::class,
        \App\Http\Middleware\Syspoint::class,

Answer 2

dparoli的答案正确但不完全正确！因为这个中间件会运行每个Web请求！

如何在某条路线下跑步？这是如何;

protected $routeMiddleware = [
    'auth' => \Illuminate\Auth\Middleware\Authenticate::class,
    'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
    'bindings' => \Illuminate\Routing\Middleware\SubstituteBindings::class,
    'can' => \Illuminate\Auth\Middleware\Authorize::class,
    'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
    'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
    'sys-point' => \App\Http\Middleware\Syspoint::class,
];

然后在你的路线上定义新的中间件

Route::group(['middleware' => ['web','sys-point'], 'namespace' => 'YourControllers'], function()
{
}

Laravel全球中间件无法获得会话

2 个答案: