Mybatis基础操作Mapper模板
2022年12月24日约 876 字大约 3 分钟
Mybatis基础操作Mapper模板
1. 查询
1.1 查询列表
<sql id="selectNoticeVo">
select notice_id, notice_title, notice_type, notice_content, status, create_by, create_time, update_by, update_time, remark
from sys_notice
</sql>
<select id="selectNoticeList" parameterType="com.fardu.system.domain.SysNotice" resultMap="SysNoticeResult">
<include refid="selectNoticeVo"/>
<where>
<if test="noticeTitle != null and noticeTitle != ''">
AND notice_title like concat(concat('%',#{noticeTitle}),'%')
</if>
<if test="noticeType != null and noticeType != ''">
AND notice_type = #{noticeType}
</if>
<if test="createBy != null and createBy != ''">
AND create_by like concat(concat('%',#{createBy}),'%')
</if>
</where>
</select>
如果需要查询in
<if test="cllxList != null">
<foreach collection="cllxList" index="index" item="item" separator="," open="AND CLLX IN (" close=")">
#{item}
</foreach>
</if>
1.2 根据id查详情
<sql id="selectNoticeVo">
select notice_id, notice_title, notice_type, notice_content, status, create_by, create_time, update_by, update_time, remark
from sys_notice
</sql>
<select id="selectNoticeById" parameterType="Long" resultMap="SysNoticeResult">
<include refid="selectNoticeVo"/>
where notice_id = #{noticeId}
</select>
1.3 查询总数
<select id="countUserRoleByRoleId" resultType="Integer">
select count(1) from sys_user_role where role_id=#{roleId}
</select>
2. 新增
<insert id="insertNotice" parameterType="com.fardu.system.domain.SysNotice">
<selectKey keyProperty="noticeId" order="BEFORE" resultType="long">
select seq_sys_notice.nextval as noticeId from DUAL
</selectKey>
insert into sys_notice (
<if test="noticeId != null and noticeId != '' ">notice_id, </if>
<if test="noticeTitle != null and noticeTitle != '' ">notice_title, </if>
<if test="noticeType != null and noticeType != '' ">notice_type, </if>
<if test="noticeContent != null and noticeContent != '' ">notice_content, </if>
<if test="status != null and status != '' ">status, </if>
<if test="remark != null and remark != ''">remark,</if>
<if test="createBy != null and createBy != ''">create_by,</if>
create_time
)values(
<if test="noticeId != null and noticeId != '' ">#{noticeId}, </if>
<if test="noticeTitle != null and noticeTitle != ''">#{noticeTitle}, </if>
<if test="noticeType != null and noticeType != ''">#{noticeType}, </if>
<if test="noticeContent != null and noticeContent != ''">#{noticeContent}, </if>
<if test="status != null and status != ''">#{status}, </if>
<if test="remark != null and remark != ''">#{remark},</if>
<if test="createBy != null and createBy != ''">#{createBy},</if>
sysdate
)
</insert>
3. 修改
<update id="updateNotice" parameterType="com.fardu.system.domain.SysNotice">
update sys_notice
<set>
<if test="noticeTitle != null and noticeTitle != ''">notice_title = #{noticeTitle}, </if>
<if test="noticeType != null and noticeType != ''">notice_type = #{noticeType}, </if>
<if test="noticeContent != null">notice_content = #{noticeContent}, </if>
<if test="status != null and status != ''">status = #{status}, </if>
<if test="updateBy != null and updateBy != ''">update_by = #{updateBy},</if>
update_time = sysdate
</set>
where notice_id = #{noticeId}
</update>
4. 删除
4.1 根据id删除
<delete id="deleteNoticeById" parameterType="Long">
delete from sys_notice where notice_id = #{noticeId}
</delete>
4.2 根据IDs批量删除
<delete id="deleteNoticeByIds" parameterType="Long">
delete from sys_notice where notice_id in
<foreach item="noticeId" collection="array" open="(" separator="," close=")">
#{noticeId}
</foreach>
</delete>
5. 统计
<select id="countNoticeByType" resultType="Integer">
select count(1) from sys_notice where type=#{type}
</select>
6. 完整代码
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.fardu.system.mapper.SysNoticeMapper">
<resultMap type="com.fardu.system.domain.SysNotice" id="SysNoticeResult">
<result property="noticeId" column="notice_id" />
<result property="noticeTitle" column="notice_title" />
<result property="noticeType" column="notice_type" />
<result property="noticeContent" column="notice_content" />
<result property="status" column="status" />
<result property="createBy" column="create_by" />
<result property="createTime" column="create_time" />
<result property="updateBy" column="update_by" />
<result property="updateTime" column="update_time" />
<result property="remark" column="remark" />
</resultMap>
<sql id="selectNoticeVo">
select notice_id, notice_title, notice_type, notice_content, status, create_by, create_time, update_by, update_time, remark
from sys_notice
</sql>
<select id="selectNoticeById" parameterType="Long" resultMap="SysNoticeResult">
<include refid="selectNoticeVo"/>
where notice_id = #{noticeId}
</select>
<select id="selectNoticeList" parameterType="com.fardu.system.domain.SysNotice" resultMap="SysNoticeResult">
<include refid="selectNoticeVo"/>
<where>
<if test="noticeTitle != null and noticeTitle != ''">
AND notice_title like concat(concat('%',#{noticeTitle}),'%')
</if>
<if test="noticeType != null and noticeType != ''">
AND notice_type = #{noticeType}
</if>
<if test="createBy != null and createBy != ''">
AND create_by like concat(concat('%',#{createBy}),'%')
</if>
</where>
</select>
<insert id="insertNotice" parameterType="com.fardu.system.domain.SysNotice">
<selectKey keyProperty="noticeId" order="BEFORE" resultType="long">
select seq_sys_notice.nextval as noticeId from DUAL
</selectKey>
insert into sys_notice (
<if test="noticeId != null and noticeId != '' ">notice_id, </if>
<if test="noticeTitle != null and noticeTitle != '' ">notice_title, </if>
<if test="noticeType != null and noticeType != '' ">notice_type, </if>
<if test="noticeContent != null and noticeContent != '' ">notice_content, </if>
<if test="status != null and status != '' ">status, </if>
<if test="remark != null and remark != ''">remark,</if>
<if test="createBy != null and createBy != ''">create_by,</if>
create_time
)values(
<if test="noticeId != null and noticeId != '' ">#{noticeId}, </if>
<if test="noticeTitle != null and noticeTitle != ''">#{noticeTitle}, </if>
<if test="noticeType != null and noticeType != ''">#{noticeType}, </if>
<if test="noticeContent != null and noticeContent != ''">#{noticeContent}, </if>
<if test="status != null and status != ''">#{status}, </if>
<if test="remark != null and remark != ''">#{remark},</if>
<if test="createBy != null and createBy != ''">#{createBy},</if>
sysdate
)
</insert>
<update id="updateNotice" parameterType="com.fardu.system.domain.SysNotice">
update sys_notice
<set>
<if test="noticeTitle != null and noticeTitle != ''">notice_title = #{noticeTitle}, </if>
<if test="noticeType != null and noticeType != ''">notice_type = #{noticeType}, </if>
<if test="noticeContent != null">notice_content = #{noticeContent}, </if>
<if test="status != null and status != ''">status = #{status}, </if>
<if test="updateBy != null and updateBy != ''">update_by = #{updateBy},</if>
update_time = sysdate
</set>
where notice_id = #{noticeId}
</update>
<delete id="deleteNoticeById" parameterType="Long">
delete from sys_notice where notice_id = #{noticeId}
</delete>
<delete id="deleteNoticeByIds" parameterType="Long">
delete from sys_notice where notice_id in
<foreach item="noticeId" collection="array" open="(" separator="," close=")">
#{noticeId}
</foreach>
</delete>
</mapper>
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