Mybatis-Plus自动装填配置_@tablefield(value = "create_time", fill = fieldfil

1.继承MetaObjectHandler

@Component
@Slf4j
public class CustomMetaObjectHandler implements MetaObjectHandler {
    @Override
    public void insertFill(MetaObject metaObject) {
        this.strictInsertFill(metaObject, "createTime", DateUtils::getTime, String.class);
        this.strictInsertFill(metaObject, "updateTime", DateUtils::getTime, String.class);
        this.strictInsertFill(metaObject, "createUser",
            () -> Optional.ofNullable(CurrentUser.currentUser()).map(CasUser::getUserId).orElse(""), String.class);
        this.strictInsertFill(metaObject, "updateUser",
            () -> Optional.ofNullable(CurrentUser.currentUser()).map(CasUser::getUserId).orElse(""), String.class);
    }
 
    @Override
    public void updateFill(MetaObject metaObject) {
        // mp 默认有值不覆盖
        metaObject.setValue("updateTime", null);
        metaObject.setValue("updateUser", null);
        this.strictUpdateFill(metaObject, "updateTime", DateUtils::getTime, String.class);
        this.strictUpdateFill(metaObject, "updateUser",
            () -> Optional.ofNullable(CurrentUser.currentUser()).map(CasUser::getUserId).orElse(""), String.class);
    }
}

2.字段上需要设置

@Data
@Accessors(chain = true)
public class BaseLogicDelDO implements Serializable {
    private static final long serialVersionUID = -206906616465913477L;
    public static final String CREATE_USER = "CREATE_USER";
    public static final String UPDATE_TIME = "UPDATE_TIME";
    public static final String UPDATE_USER = "UPDATE_USER";
    @TableField("STATUS")
    private Status status;
 
    @TableLogic
    private Status delFlag;
 
 
    @TableField(value = CREATE_USER, fill = FieldFill.INSERT)
    private String createUser;
 
    @TableField(value = "CREATE_TIME", fill = FieldFill.INSERT)
    private String createTime;
 
    @TableField(value = UPDATE_USER, fill = FieldFill.INSERT_UPDATE)
    private String updateUser;
 
    @TableField(value = UPDATE_TIME, fill = FieldFill.INSERT_UPDATE)
    private String updateTime;
}

实体表字段需要设置fill填充方式，这里updateTime和updateUser都会根据操作人新增或修改都会更新，注意Mybatis-Plus字段填充是针对空字段填充，更新时需要覆盖updateTime和updateUser需要先置空，再填充。