java configuration非XML配置问题

用java configuration形式配置mybatis时，一直找不到mapper，请问是什么原因啊
这是我的配置：
@Configuration
@MapperScan("com.egreenbuy.backend.mapper")
@EnableTransactionManagement
public class MyBatisConfig {
@Bean
public SqlSessionFactory sqlSessionFactory() throws Exception
{
SqlSessionFactoryBean sqlSessionFactory = new SqlSessionFactoryBean();
sqlSessionFactory.setDataSource(MysqlDS());
//sqlSessionFactory.setTypeAliasesPackage("com.egreenbuy.backend.config.entity");
// String path = "/com/egreenbuy/backend/mapper/*.xml";
// PathMatchingResourcePatternResolver resource = new PathMatchingResourcePatternResolver();
// sqlSessionFactory.setMapperLocations(resource.getResources(path));
return sqlSessionFactory.getObject();
}
}
这是异常：
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.egreenbuy.backend.mapper.BaseDataMapper.selectAll

排查一下BaseDataMapper.selectAll配置文件里面是否有这个，
然后看下各种路径对了乜有