如何在Laravel中使用多个db2数据库

'connections' => [
    'db2_1' => [
        'driver' => 'db2',
        'host' => 'hostname',
        'database' => 'database_name',
        'username' => 'username',
        'password' => 'password',
        'port' => 'port_number',
        'prefix' => '',
        'schema' => 'schema_name',
    ],
    'db2_2' => [
        'driver' => 'db2',
        'host' => 'hostname',
        'database' => 'database_name',
        'username' => 'username',
        'password' => 'password',
        'port' => 'port_number',
        'prefix' => '',
        'schema' => 'schema_name',
    ],
],

php artisan make:model User

protected $connection = 'db2_1'; // 或者 'db2_2'，根据需要选择对应的数据库连接

$users = User::all();