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关于java中Dao模块接口问题

BaseDao.java public interface BaseDao {} BaseDaoImpl.java public abstract class BaseDaoImpl implements BaseDao {} UserService.java public interface Us...

关于java中Dao模块接口问题，请教一下原理

BaseDao.javapublic interface BaseDao {}BaseDaoImpl.javapublic abstract class BaseDaoImpl implements BaseDao {}UserService.java public interface UserSe...

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