@TableField之fill自动填充
mybatis-plus中
TableField映射非主键字段，value映射字段名，exist表示是否为数据库字段，select表示是否查询该字段，fill表示是否自动填充
实体类
@Data
public class User {
@TableId(type = IdType.NONE)
private Long id;
private String userName;
private String passWord;
@TableField(fill = FieldFill.INSERT)
private Date createTime;
@TableField(fill = FieldFill.INSERT_UPDATE)
private Date updateTime;
}自动填充处理器
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {
@Override
public void insertFill(MetaObject metaObject) {
this.setFieldValByName("createTime",new Date(),metaObject);
this.setFieldValByName("updateTime",new Date(),metaObject);
}
@Override
public void updateFill(MetaObject metaObject) {
this.setFieldValByName("updateTime",new Date(),metaObject);
}
}MyBatis-Plus自动填充
mybatis-plus 自动填充公共字段
直接上代码
首先我们要实现mybatis-plus的MetaObjectHandler接口,代码如下:
@SpringBootConfiguration
public class MetaObjectConfig implements MetaObjectHandler
{
@Override
public void insertFill(MetaObject metaObject) {
//拿到类是否有此字段
boolean hasGetter = metaObject.hasGetter("createDate");
if (hasGetter)
{
// this.strictInsertFill(metaObject,"字段名对应你的实体类的字段名",String.class,"Value");
this.strictInsertFill(metaObject,"createDate", LocalDateTime.class,LocalDateTime.now());
}
}
@Override
public void updateFill(MetaObject metaObject)
{
Object upDateTime = getFieldValByName("upDateTime", metaObject);
if (upDateTime == null)
{
this.strictUpdateFill(metaObject,"upDate",LocalDateTime.class,LocalDateTime.now());
}
}
}实体类
@Data
@TableName("t_user")
public class User {
@TableId(type = IdType.AUTO)
private Integer id;
@TableField("user_name")
private String username;
@TableField("pass_word")
private String password;
@TableField(value = "crate_date",fill = FieldFill.INSERT)
private LocalDateTime createDate; //新增时间
@TableField(value = "up_name",fill = FieldFill.UPDATE)
private String upName; //更新人
// ...................
}以上为个人经验，希望能给大家一个参考，也希望大家多多支持编程网。
