异常：
Exception in thread "main" org.apache.ibatis.binding.BindingException: Type interface com.aaa.pro.dao.EmpDao 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:763)
at org.apache.ibatis.session.defaults.DefaultSqlSession.getMapper(DefaultSqlSession.java:291)
at com.aaa.pro.test.Main2.query1(Main2.java:25)
at com.aaa.pro.test.Main2.main(Main2.java:20)
解决办法：
看看你的mybatis-config.xml中的mappers映射是否写了
