php - Laravel 8，找不到模型工厂类

Question

因此，当使用在laravel 8.x中引入的新模型工厂类时，就说明了这个奇怪的问题，即laravel无法找到与该模型相对应的工厂。我得到这个错误

PHP Error:  Class 'Database/Factories/BusinessUserFactory' not found in .....

我跟随laravel文档，我不知道发生了什么
这是 BusinessUser类

<?php

namespace App;

use Database\Factories\BusinessUserFactory;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class BusinessUser extends Model
{
    use HasFactory;
}

和工厂

<?php

namespace Database\Factories;

use App\BusinessUser;
use Illuminate\Database\Eloquent\Factories\Factory;
use Illuminate\Support\Str;

class BusinessUserFactory extends Factory
{
    /**
     * The name of the factory's corresponding model.
     *
     * @var string
     */
    protected $model = BusinessUser::class;

    /**
     * Define the model's default state.
     *
     * @return array
     */
    public function definition()
    {
        return [
            'name' => "dsfsf"
        ];
    }
}

任何想法或线索，我们将不胜感激。

Answer 1

如果从以前的版本升级到8，则可能会丢失Database\Factories中composer.json命名空间的autoload指令:

"autoload": {
    "psr-4": {
        "App\\": "app/",
        "Database\\Factories\\": "database/factories/",
        "Database\\Seeders\\": "database/seeders/"
    }
},

您也可以删除 classmap部分，因为不再需要它。
进行这些更改后，运行 composer dump。
Laravel 8.x Docs - Upgrade Guide - Database - Seeder and Factory Namespace