Laravel 8 前置 & 后置 中间件
中间件是在请求之前或之后执行，取决于中间件本身。例如，下面的中间件将在应用处理请求之前执行一些任务：
<?php
namespace App\Http\Middleware;
use Closure;
class BeforeMiddleware
{
public function handle($request, Closure $next)
{
// Perform action
return $next($request);
}
}然而，下面中间件是在应用请求之后执行一些任务：
<?php
namespace App\Http\Middleware;
use Closure;
class AfterMiddleware
{
public function handle($request, Closure $next)
{
$response = $next($request);
// Perform action
return $response;
}
}