配置文件里：
//七牛
'UPLOAD_SITEIMG_QINIU' => array (
'maxSize' => 5 * 1024 * 1024,//文件大小
'rootPath' => './',
'saveName' => array ('uniqid', ''),
'driver' => 'Qiniu',
'driverConfig' => array (
'secrectKey' => 'xxxxxxxxxxxxxxxxxxx',
'accessKey' => 'xxxxxxxxxxxxx',
'domain' => 'xxxxxxxx',
'bucket' => 'xxx'//'<空间名称>',
)

),

控制器：
$setting=C('UPLOAD_SITEIMG_QINIU');
$qiniu = new \Think\Upload\Driver\Qiniu\QiniuStorage($setting['driverConfig']);
$list = $qiniu->getList();

$down = $qiniu->info('xxx.png');

然后就看QiniuStorage.class.php提供了哪些方法 就可以为所欲为了