mybatis 批量插入,更新删除

批量插入:insert into 表名(userName,userPwd) values (xx, yy), (xx1, yy1)...(对应下面xml)

<insert id="addUserBatch" parameterType="list" >
insert into 表名(userName,userPwd) values
<foreach collection="list" item="item" separator=",">
(#{item.userName},#{item.userPwd})
</foreach>
</insert>

其中:collection: 值类型 list和Array
批量更新:
 用下面这些方式更新
java bean (可以新建一个专门的bean来使用)
map (key, values)
list

例如:通过id批量更新用户名(参数类型:map)

update 表名 set userPwd=#{userPwd} where id in(xx, xxx, ....)

<update id="updateUserUserPwdBatch" parameterType="map" >
update  表名  set userPwd=#{userPwd} where id in
<foreach collection="map对应key" item="item"  open="(" separator="," close=")" >
#{item}
</foreach>
</update>

批量删除(不推荐使用):
按id删除:
delete from 表名 where id in(xx, xxx, xxxx, ....)
<delete id="deleteUserBatch">
delete from 表名
where id in
<foreach collection="array" item="item" open="(" separator="," close=")">
#{item}
</foreach>
</delete>