Class 'UserTableSeeder' does not exist - Laravel 5.0 [php artisan db:seed]

我尝试使用laravel5.0初始安装的文件测试填充数据，出现并非常见的由于没有使用use App\User;导致的class 'User' not found错误。

migrations为初始安装默认文件

下面是UserTableSeeder.php

<?php
use App\User;
use Illuminate\Database\Seeder;
class UserTableSeeder extends Seeder {
    public function run()
    {
        DB::table('users')->delete();
        User::create(['email' => '[email protected]']);
    }
}

下面是DatabaseSeeder.php

<?php

use Illuminate\Database\Seeder;
use Illuminate\Database\Eloquent\Model;

class DatabaseSeeder extends Seeder {

    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        Model::unguard();

        $this->call('UserTableSeeder');
    }
}