已经解决问题

Exception in thread “main” org.apache.ibatis.binding.BindingException: Type interface longkuan.yuan.conponentscan_import.Dao.AccountDao is not known to the MapperRegistry.
at org.apache.ibatis.binding.MapperRegistry.getMapper(MapperRegistry.java:47)
at org.apache.ibatis.session.Configuration.getMapper(Configuration.java:899)
at org.apache.ibatis.session.defaults.DefaultSqlSession.getMapper(DefaultSqlSession.java:291)
at longkuan.yuan.conponentscan_import.App.main(App.java:26)
远在实在mybatis的xml文件中把包的标签与类的标签整混了。
本该导包的，导成一个具体的类了。
修改后