Type interface com.dragon.mydemo.mapper.StudentMapper is not known to the MapperRegistry.
报错日志：
Exception in thread "main" org.apache.ibatis.binding.BindingException: Type interface com.dragon.mydemo.mapper.StudentMapper 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:750)at org.apache.ibatis.session.defaults.DefaultSqlSession.getMapper(DefaultSqlSession.java:292)at com.dragon.mydemo.App.main(App.java:43)
意思是找不到映射器注册信息。原因是MyBatis核心配置文件没有配置mappers
<mappers><mapper resource="com/dragon/mydemo/mapper/StudentMapper.xml" /></mappers>
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