“Type interface is not known to the MapperRegistry” exception using mybatis

Question

I\'m setting up mybatis using annotations, and getting this helpful exception

org.apache.ibatis.binding.BindingException: Type interface org.foo.Bar is

Answer 1

In your mapper.xml file mapper's namespace should be the path to the mapper interface.

for example:

select * from bus_line where id = #{id}

your mapper interface should be in com.mapper package and the name of it is LineMapper.