thinkphp3.2 CLI模式下无法加载数据库驱动

Question

使用的是Windows服务器，项目需要用到计划任务更新订单状态。用Thinkphp下的CLI模式，然后用BAT执行。出现无法加载数据库驱动的问题。

无法加载数据库驱动: Think\Db\Driver\
FILE: D:\freehost\xxx\web\api\simplewind\Core\Library\Think\Db.class.php(42)
#0 D:\freehost\xxx\web\api\simplewind\Core\Library\Think\Db.class.php(42): E('???????????????...')
#1 D:\freehost\xxx\web\api\simplewind\Core\Library\Think\Model.class.php(1446): Think\Db::getInstance('')
#2 D:\freehost\xxx\web\api\simplewind\Core\Library\Think\Model.class.php(97): Think\Model->db(0, '', true)
#3 D:\freehost\xxx\web\api\simplewind\Core\Common\functions.php(646): Think\Model->__construct('Order', '', '')
#4 D:\freehost\xxx\web\api\application\Inter\Controller\CrontabController.class.php(19): M('Order')
#5 [internal function]: Inter\Controller\CrontabController->dealOrder()
#6 D:\freehost\xxx\web\api\simplewind\Core\Library\Think\App.class.php(173): ReflectionMethod->invoke(Object(Inter\Controller\CrontabController))
#7 D:\freehost\xxx\web\api\simplewind\Core\Library\Think\App.class.php(110): Think\App::invokeAction(Object(Inter\Controller\CrontabController), 'dealOrder')
#8 D:\freehost\xxx\web\api\simplewind\Core\Library\Think\App.class.php(204): Think\App::exec()
#9 D:\freehost\xxx\web\api\simplewind\Core\Library\Think\Think.class.php(120): Think\App::run()
#10 D:\freehost\xxx\web\api\simplewind\Core\ThinkPHP.php(97): Think\Think::start()
#11 D:\freehost\xxx\web\api\index_cli.php(47): require('D:\freehost\bao...')
#12 {main}