在 laravel 5.2 中禁用特定路由的 Web 中间件

我希望来宾用户可以访问主页，但内置的身份验证过程会将laravel重定向到登录页面.如何让来宾用户访问主页？

我的路由.php:

Route::group(['middleware' => 'web'], function () {
Route::auth();

Route::get('/', 'HomeController@index');

Route::get('/insert', 'HomeController@insertform');
Route::get('/job/{id}', 'JobsController@show');

Route::get('/city/{city}', 'JobsController@city');

Route::post('/insert', 'HomeController@insert');
Route::get('/cityinsert', 'HomeController@cityinsert');
Route::post('/cityinsert', 'HomeController@cityinsertpost');

});

and authenticate.php

class Authenticate
{
 /**
 * Handle an incoming request.
 *
 * @param  \Illuminate\Http\Request  $request
 * @param  \Closure  $next
 * @param  string|null  $guard
 * @return mixed
 */
public function handle($request, Closure $next, $guard = null)
{
    if (Auth::guard($guard)->guest()) {
        if ($request->ajax()) {
            return response('Unauthorized.', 401);
        } else {
            return redirect()->guest('login');
        }
    }

    return $next($request);
}
}

and this is my kernel.php

class Kernel extends HttpKernel
{
/**
 * The application's global HTTP middleware stack.
 *
 * These middleware are run during every request to your application.
 *
 * @var array
 */
protected $middleware = [
    \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
];

/**
 * The application's route middleware groups.
 *
 * @var array
 */
protected $middlewareGroups = [
    'web' => [
        \App\Http\Middleware\EncryptCookies::class,
        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
        \Illuminate\Session\Middleware\StartSession::class,
        \Illuminate\View\Middleware\ShareErrorsFromSession::class,
        \App\Http\Middleware\VerifyCsrfToken::class,
    ],

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

/**
 * The application's route middleware.
 *
 * These middleware may be assigned to groups or used individually.
 *
 * @var array
 */
protected $routeMiddleware = [
    'auth' => \App\Http\Middleware\Authenticate::class,
    'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
    'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
    'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
];
}