mybatis注解如何实现对象批量更改

@Update ( "<script>"

+ "<foreach collection='listUserAnswerRecord' item='item' open='' close=''  separator=';'> "

+ " update t_qb_record_201910"

+ " set answered = 0, progress = 1, answer_sheet = null, gmt_update = #{item.gmtUpdate}"

+ " <where>"

+ "<choose>"

+ "<when test='item.unionid !=null'> unionid=#{item.unionid}</when>"

+ "<otherwise> openid= #{item.openid} </otherwise>"

+ "</choose>"

+ " and goods_id = #{item.goodsId} and charpter_id = #{item.charpterId} and type = #{item.type}"

+ "</where>"

+ "</foreach>"

+ "</script>" )

Integer deleteUserAnswerSheet( @Param ( "listUserAnswerRecord" ) List<UserAnswerRecordNew> listUserAnswerRecord);

//批量插入

     @Insert ({

         "<script>" ,

         "insert into table(column1, column2) values " ,

         "<foreach collection='userLists' item='item' index='index' separator=','>" ,

         "(#{item.column1}, #{item.column2} )" ,

         "</foreach>" ,

         "</script>"

     })

     public int insertUsers( @Param (value= "userLists" ) List<User> userLists);

//批量更新

@Update ({

         "<script>" ,

         "<foreach collection='userLists' item='item' index='index' separator=';'>" ,

         "update table b" ,

         "set b.column1= #{item.column1}，b.column2= #{item.column2}  where b.column3= #{item.column3}" ,

         "</foreach>" ,

         "</script>"

     })

     public int updateUser( @Param (value= "userLists" ) List<User> userLists);