如果你需要为每个请求做一些事情，中间件通常是答案。所以通过运行artisan make:middleware DomainLogger创建一个中间件。编辑它看起来像这样：

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\Response;

class DomainLogger
{
    /**
     * Handle an incoming request.
     *
     * @param  \Closure(\Illuminate\Http\Request): (\Symfony\Component\HttpFoundation\Response)  $next
     */
    public function handle(Request $request, Closure $next): Response
    {
        $domain = $request->getHost();
        // use whatever logic to match these up; static map, db lookup, etc.
        $logger = match($domain) {
            'example.com' => 'foo',
            'example.net' => 'bar',
            'example.org' => 'baz',
            default => 'def',
        };
        config('logging.default', $logger);

        return $next($request);
    }
}

然后在app\Http\Kernel.php中注册

protected $middleware = [                                                                       
    ...
    App\Http\Middleware\DomainLogger::class,                                                              
];