以该表为例
批量添加语句：
<!--批量插入-->
<insert id="SimpleInsert" parameterType="java.util.List">
INSERT INTO power_role(
role_id,
role_name,
effective,
create_date,
creater,
update_date,
updater,
remark
)
VALUES
<foreach collection ="list" item="item" index= "index" separator =",">
(
#{item.roleId,jdbcType=INTEGER},
#{item.roleName,jdbcType=VARCHAR},
#{item.effective,jdbcType=INTEGER},
#{item.createDate,jdbcType=CHAR},
#{item.creater,jdbcType=VARCHAR},
#{item.updateDate,jdbcType=CHAR},
#{item.updater,jdbcType=VARCHAR},
#{item.remark,jdbcType=VARCHAR}
)
</foreach >
</insert>
批量修改：
<update id="updatePath" parameterType="java.util.List">
UPDATE power_role
SET
role_name = CASE role_id
<foreach collection="list" item="item" index="index" open="" separator="" close="">
<choose>
<when test="item.roleName != null and item.roleName != ''">
WHEN #{item.roleId} THEN #{item.roleName}
</when>
<otherwise>
WHEN #{item.roleId} THEN role_name
</otherwise>
</choose>
</foreach>
END,
remark = CASE role_id
<foreach collection="list" item="item" index="index" open="" separator="" close="">
<choose>
<when test="item.remark != null and item.remark != ''">
WHEN #{item.roleId} THEN #{item.remark}
</when>
<otherwise>
WHEN #{item.roleId} THEN remark
</otherwise>
</choose>
</foreach>
END,
effective = CASE role_id
<foreach collection="list" item="item" index="index" open="" separator="" close="">
<choose>
<when test="item.effective != null">
WHEN #{item.roleId} THEN #{item.effective }
</when>
<otherwise>
WHEN #{item.roleId} THEN effective
</otherwise>
</choose>
</foreach>
END,
create_date= CASE role_id
<foreach collection="list" item="item" index="index" open="" separator="" close="">
<choose>
<when test="item.createDate!= null and item.createDate!=''">
WHEN #{item.roleId} THEN #{item.createDate}
</when>
<otherwise>
WHEN #{item.roleId} THEN create_date
</otherwise>
</choose>
</foreach>
END,
creater= CASE role_id
<foreach collection="list" item="item" index="index" open="" separator="" close="">
<choose>
<when test="item.creater!= null and item.creater!=''">
WHEN #{item.roleId} THEN #{item.creater}
</when>
<otherwise>
WHEN #{item.roleId} THEN creater
</otherwise>
</choose>
</foreach>
END,
update_date= CASE role_id
<foreach collection="list" item="item" index="index" open="" separator="" close="">
<choose>
<when test="item.updateDate!= null and item.updateDate!= ''">
WHEN #{item.roleId} THEN #{item.updateDate}
</when>
<otherwise>
WHEN #{item.roleId} THEN update_date
</otherwise>
</choose>
</foreach>
END,
udpater= CASE role_id
<foreach collection="list" item="item" index="index" open="" separator="" close="">
<choose>
<when test="item.udpater!= null and item.udpater!=''">
WHEN #{item.roleId} THEN #{item.udpater}
</when>
<otherwise>
WHEN #{item.roleId} THEN udpater
</otherwise>
</choose>
</foreach>
END,
WHERE
role_id in
<foreach collection="list" item="item" index="index" open="(" separator="," close=")">
#{item.roleId}
</foreach>
</update>