php artisan make:middleware TestMiddleware

class TestMiddleware
{
  /**
   * Handle an incoming request.
   *
   * @param \Illuminate\Http\Request $request
   * @param \Closure $next
   * @return mixed
   */
  public function handle($request, Closure $next)
  {
    return $next($request);
  }
}

  public function handle($request, Closure $next)
  {
    // 如果傳入的id參數(shù)等于0 就跳轉(zhuǎn)到首頁(yè)。
    if ($request->input('id') == 0){
      return redirect('/');
    }
    // id參數(shù)不等于0 則為通過(guò) 進(jìn)行默認(rèn)的下一步操作。
    return $next($request);
  }

  /**
   * The application's global HTTP middleware stack.
   *
   * @var array
   */
  protected $middleware = [
    \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
    \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,
  ];
  /**
   * The application's route middleware.
   *
   * @var array
   */
  protected $routeMiddleware = [
    'auth' => \App\Http\Middleware\Authenticate::class,
    'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
    'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
    // 把我們創(chuàng)建的middleware注冊(cè)到這里
    'test' => \App\Http\Middleware\TestMiddleware::class,
  ];

Route::get('/test-middleware',['middleware'=>'test',function(){
  return 'HI';
}]);