xxxMapper.xml：
<update id="updateSensorWarnings" parameterType="java.util.List" >
<foreach collection="list" item="item" index="index" open="" close="" separator=";">
update sensor_warning
<set >
<if test="item.handlePerson != null and item.handlePerson != '' " >
handle_person = #{item.handlePerson},
</if>
<if test="item.processProgress != null and item.processProgress != '' " >
process_progress = #{item.processProgress}
</if>
</set>
where id = #{item.id}
</foreach>
</update>
示例代碼：
