这是我的第2个bug-Type interface Mapper is not known to the MapperRegistry.

bug描述

Exception in thread "main" org.apache.ibatis.binding.BindingException: Type interface com.itheima.mapper.UserMapper 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:823)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.getMapper(DefaultSqlSession.java:291)
	at com.itheima.Test2.main(Test2.java:26)

原因

使用mybatis时，扫描mapper映射文件错误 导致的

解决办法

错误方式

正确方式

扫描包路径时要用.连接包名，而不是 /