Oracle中DATE型数据在Dao曾提取不出来?
<select id="listCommunicatePlan" resultType="CommunicatePlan">
SELECT COMMUNICATE_ID,COMMUNICATE_TITLE,COMMUNICATE_CONTENT,TO_CHAR(COMMUNICATE_DATE,'yyyy-MM-dd'),COMMUNICATE_LOCATION,COMMUNICATE_PERSON,CREATE_USER,LAST_MODIFIED_USER
FROM PM_WORK_COMMUNICATE ORDER BY COMMUNICATE_ID DESC
</select>
mapper层如上想用TO_CHAR(COMMUNICATE_DATE,'yyyy-MM-dd') 将数据库的date型转为java对象的String型但是为null,哪里有问题?