src/Controller.php
protected function getIntMust(string $name, string $msg = ''): int
    {
        return $this->getInt($name, $msg);
    }
protected function getIntMust(string $name, string $msg = ''): int
    {
        return $this->getInt($name, $msg);
    }
从请求参数中获取一个必须的整数
@param string $name
@param string $msg
@return int