1.接口协议
| 变量名 | 含义 | 类型 | 备注 | |
| cmd | 请求指令 | number | 100619 | |
| dt | 请求时间 | number | 最后一条记录或第一条记录时间，如果为0则为最新 | |
| homeworkId | 作业ID | number | ||
| pullType | 获取类型 | number | 1为下拉刷新，2为上拉获取历史数据 | |
| reqUserType | 成果展示用户类型 | number | ||
| size | 请求条数 | number |
2.接口设计的参数
private int homeworkId; private int reqUserType; private long dt; private int pullType; private int size;
3.mybatis的sql
<select id="queryHomeworkShowList" resultType="qtone.xxt.gz.data3.bean.homework.HomeworkShowBean">
SELECT * FROM (
select t.*,row_number() over (order by t.dt desc) rn from (
select
hs.CONTENT as asComment,hs.UPLOAD_TIME as dt,hs.id as id,hs.PATH as original,hs.THUMB_PATH as thumb,<if test="hslReqParam.reqUserType==1">
xt.username as asUser,</if>
<if test="hslReqParam.reqUserType==2">
xf.name as asUser,</if>
hs.USER_ID as userId,hs.user_type as userType
FROM
${hslReqParam.area}_HOMEWORK_SHOW hs
<if test="hslReqParam.reqUserType==1">
left join xj_teacher xt
on hs.user_id=xt.id
</if>
<if test="hslReqParam.reqUserType==2">
left join ${hslReqParam.area}_xj_family xf
on hs.user_id=xf.id
</if>
where
hs.homework_id=#{hslReqParam.homeworkId}
<if test="hslReqParam.reqUserType==2">
AND hs.USER_TYPE=2
</if>
<if test="hslReqParam.reqUserType==1">
AND hs.USER_TYPE=1
</if>
<if test="hslReqParam.pullType==1">
<if test="dt !=null and dt!=''">
<![CDATA[ AND TO_CHAR (hs.UPLOAD_TIME,'yyyy-mm-dd hh24:mi:ssxff')>#{dt} ]]>
</if>
</if>
<if test="hslReqParam.pullType==2">
<if test="dt !=null and dt!=''">
<![CDATA[ AND TO_CHAR (hs.UPLOAD_TIME,'yyyy-mm-dd hh24:mi:ssxff')<#{dt} ]]>
</if>
</if>
<![CDATA[ )t ) WHERE rn <= #{hslReqParam.size} and rn >=1 ]]>
</select>
提醒自己：这次是用的毫秒来算记录的先后. 所以先格式化请求时间
