add new close function and fix the init_table function
Merge branch 'feature_dao' of https://github.com/seraphlnWu/weibo_dao into feature_dao
Merge branch 'feature_dao' of https://github.com/seraphlnWu/weibo_dao into feature_dao
Merge branch 'feature_dao' of https://github.com/seraphlnWu/weibo_dao into feature_dao
Merge branch 'feature_dao' of https://github.com/seraphlnWu/weibo_dao into feature_dao
fix the import bugs