$this->fetchType = $config['result_type'];
            }
            try {
                if (empty($config['dsn'])) {
                    $config['dsn'] = $this->parseDsn($config);
                }
                if ($config['debug']) {
                    $startTime = microtime(true);
                }
                $this->links[$linkNum] = new PDO($config['dsn'], $config['username'], $config['password'], $params);
                if ($config['debug']) {
                    // 记录数据库连接信息
                    Log::record('[ DB ] CONNECT:[ UseTime:' . number_format(microtime(true) - $startTime, 6) . 's ] ' . $config['dsn'], 'sql');
                }
            } catch (\PDOException $e) {
                if ($autoConnection) {
                    Log::record($e->getMessage(), 'error');
                    return $this->connect($autoConnection, $linkNum);
                } else {

            // 模块初始化
            if ($module && $available) {
                // 初始化模块
                $request->module($module);
                $config = self::init($module);
                // 模块请求缓存检查
                $request->cache($config['request_cache'], $config['request_cache_expire'], $config['request_cache_except']);
            } else {
                throw new HttpException(404, 'module not exists:' . $module);
            }
        } else {
            // 单一模块部署
            $module = '';
            $request->module($module);
        }
        // 当前模块路径
        App::$modulePath = APP_PATH . ($module ? $module . DS : '');