路由 routes.php

Route::group(['middleware' => ['web','admin.login.login']], function () {

      //後臺首頁路由
    Route::get('/admin/index/index','Admin\[email protected]');
});

kernel.php

 protected $routeMiddleware = [
        'auth' => \App\Http\Middleware\Authenticate::class,
        'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class
 
,
        'can' => \Illuminate\Foundation\Http\Middleware\Authorize::class,
        'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
        'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
        'admin.login.login' => \App\Http\Middleware\AdminLogin::class,
 

        
    ];

artisan 建立中介軟體 cmd命令列中

php artisan make:middleware AdminLogin

Middleware AdminLogin.php

<?php

namespace App\Http\Middleware;

use Closure;

class AdminLogin
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     
 
*/
    public function handle($request, Closure $next)
    {
        if(!session('user')){
            return redirect('admin/login/login');
        }
        return $next($request);
    }
}