用mybatis在mysql中保存字段精确到秒须要两个步骤。1、如今mysql中将时间字段改为datetime 比如:alter table tablename add pay_datedatetime comment '精确到秒的时间'2、在sql语句中直接用now(). 比如: update tj_record set is_customerHandover ='1' and customer_handover_date = now() where id = #{record_id}