第一种方式：一条update

<update id="updateThreadreturnList"  parameterType="java.util.List">
    update tb_thread set isDelete=0
    where threadId in ( 
    <foreach collection="list" item="item" index="index" open="" close="" separator=",">
            #{item.threadId}
    </foreach>
            )     
  </update>

第二种方式：多条update

注意 需要在数据库添加 &allowMultiQueries=true
jdbc:mysql://192.168.1.109:3306/healthmanage?characterEncoding=utf-8&allowMultiQueries=true

<update id="updateQuestionseleteTempalteList"  parameterType="java.util.List">
    <foreach collection="list" item="item" index="index">
    update tb_question_template_seleteitem_detail set selectedName=#{item.selectedName}
    where 1=1 and  selectedId =#{item.selectedId  };

    </foreach>
  </update>