使用Mybatis-plus，重写Service

service接口：service extends AbstracService<T>
service实现类：serviceimpl extends  AbstracServiceImpl<M,T> implements service 
 抽象通用服务接口：AbstracService<T extends xxBaseEntity> extends IService<T>
抽象通用服务接口实现： AbstracServiceImpl<M extends BaseMapper<T>,T extends xxBaseEntity> extends ServiceImpl<M, T> implements AbstracService<T>