Laravel 6 View Composer目标类不存在

// 例如，你的 View Composer 类可能看起来像这样：
namespace App\Http\View\Composers;

use Illuminate\View\View;

class ExampleComposer
{
    public function compose(View $view)
    {
        $view->with('example', 'This is an example');
    }
}

// 在你的服务提供者中
use App\Http\View\Composers\ExampleComposer;

public function boot()
{
    View::composer('*', ExampleComposer::class);
}

'providers' => [
    // ...
    App\Providers\AppServiceProvider::class,
    // ...
],

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\View;

class AppServiceProvider extends ServiceProvider
{
    public function boot()
    {
        View::composer('*', 'App\Http\View\Composers\ExampleComposer');
    }

    public function register()
    {
        //
    }
}

php artisan config:clear
php artisan route:clear

// App\Http\View\Composers\UserComposer.php
namespace App\Http\View\Composers;

use Illuminate\Support\Facades\Auth;
use Illuminate\View\View;

class UserComposer
{
    public function compose(View $view)
    {
        $view->with('user', Auth::user());
    }
}

// App\Providers\AppServiceProvider.php
public function boot()
{
    View::composer('*', 'App\Http\View\Composers\UserComposer');
}