spring 注解注入不进去

@Transactional
@Component("chkRuleInfoMapper")
public interface ChkRuleInfoMapper extends SqlMapper{
int insert(ChkRuleInfo record);

int insertSelective(ChkRuleInfo record);

List<ChkRuleInfo> selectByExample(ChkRuleInfoExample example);

}

http://blog.csdn.net/u010115177/article/details/45854799