org.apache.ibatis.binding.BindingException: Type interface dao.EmployeeMapper2 is not known to the M

//测试通过resultMap进行高级映射返回对象
@Test
public void test() throws IOException {
    SqlSessionFactory sqlSessionFactory = getSqlSessionFactory();
    SqlSession sqlSession = sqlSessionFactory.openSession();
    System.out.println(sqlSessionFactory);
    try {
        EmployeeMapper2 mapper2 = sqlSession.getMapper(EmployeeMapper2.class);
        Employee byId = mapper2.getById(2);
        System.out.println(byId);
    }catch (Exception e)
    {
        e.printStackTrace();
    }finally {
        sqlSession.close();
    }
}

爆出下面的错误

其中配置文件EmployeeMapper2.xml的文件如下：

在该映射文件中, 中的namespace的值应为对应的接口的类路径dao.EmployeeMapper2