use think\Controller;
use think\Request;
use think\Config;
use think\Exception;
use app\api\controller\Factory;
use app\api\controller\Send;
use think\response\Redirect;
use app\api\controller\UnauthorizedException;

保存后，只剩
use app\api\controller\Factory;
use app\api\controller\Send;
use think\Controller;
use think\Request;

用的sublime 3