接口分层结构
- org.springframework.data.repository.Repository<T,ID>
- org.springframework.data.repository.CrudRepository<T,ID>
- org.springframework.data.repository.PagingAndSortingRepository<T,ID>
- org.springframework.batch.sample.data.CustomerCreditRepository
- org.springframework.data.repository.PagingAndSortingRepository<T,ID>
- org.springframework.data.repository.CrudRepository<T,ID>