Laravel框架控制器的middleware中间件用法分析

public function activity0(){
  return '活动快要开始啦，敬请期待';
}
public function activity1(){
  return '活动页面1';
}
public function activity2(){
  return '活动页面2';
}

Route::any('activity0',['uses'=>'StudentController@activity0']);
Route::any('activity1',['uses'=>'StudentController@activity1']);
Route::any('activity2',['uses'=>'StudentController@activity2']);

namespace App\Http\Middleware;
use Closure;
class Activity{
  public function handle($request,Closure $next){
    if(time() < strtotime('2018-01-01')){
      return redirect('activity0');
    }
    return $next($request);
  }
}
//注册中间件，在Kernel.php中的$routeMiddleware数组中增加
protected $routeMiddleware = [
  'activity' => \App\Http\Middleware\Activity::class,
];

//宣传页面不需要中间件验证，不能放里边
Route::any('activity0',['uses'=>'StudentController@activity0']);
Route::group(['middleware'=>['activity']],function(){
  Route::any('activity1',['uses'=>'StudentController@activity1']);
  Route::any('activity2',['uses'=>'StudentController@activity2']);
});

//后置中间件
public function handle($request,Closure $next){
  $response = $next($request);
  echo $response;
  echo '我是后置操作';
}