[0.说明](sds.md) [1.实体类](1.%E5%AE%9E%E4%BD%93%E7%B1%BB1.md) [2.repository(dao层)](2.repositorydao%E5%B1%821.md) [3.测试](3.%E6%B5%8B%E8%AF%951.md)