冷月醉雪 2020-07-05
项目中很多时候需要自动更新的列表项,例如创建时间(createTime)和修改时间(updateTime),所以的在建表的时候需要特殊处理一下:
create table `account` ( `id` int primary key auto_increment, `title` varchar(32) not null comment ‘标题‘, `price` decimal(6,2) default 0.01 comment ‘价格‘, `username` varchar(16) not null comment ‘账号‘, `password` varchar(16) not null comment ‘密码‘, `create_time` timestamp default current_timestamp comment ‘创建时间‘, `update_time` timestamp default current_timestamp on update current_timestamp comment ‘修改时间‘ ) comment ‘账号表‘;
然后修改对应的实体类,添加@DynamicInsert和@DynamicUpdate注解
@Data @Entity @DynamicInsert @DynamicUpdate public class Account { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Integer id; private String title; private BigDecimal price; private String username; private String password; private Date createTime; private Date updateTime; }