Merge pull request #130 from huyuanzhe/Data#40_yuanzhe

Data#40 yuanzhe->xiquan
fixAPIbug-wangyu: fix get data directory bug
Merge pull request #131 from IbpTeam/fixAPIbug-wangyu

fixAPIbug-wangyu->wangfeng
OK
Data#40_yuanzhe:modify dao api,when update one data item,could use a object to update, instead of key value