[{"createTime":1735734952000,"id":1,"img":"hwy_ms_500_252.jpeg","link":"https://activity.huaweicloud.com/cps.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=V1g3MDY4NTY=&utm_medium=cps&utm_campaign=201905","name":"华为云秒杀","status":9,"txt":"华为云38元秒杀","type":1,"updateTime":1735747411000,"userId":3},{"createTime":1736173885000,"id":2,"img":"txy_480_300.png","link":"https://cloud.tencent.com/act/cps/redirect?redirect=1077&cps_key=edb15096bfff75effaaa8c8bb66138bd&from=console","name":"腾讯云秒杀","status":9,"txt":"腾讯云限量秒杀","type":1,"updateTime":1736173885000,"userId":3},{"createTime":1736177492000,"id":3,"img":"aly_251_140.png","link":"https://www.aliyun.com/minisite/goods?userCode=pwp8kmv3","memo":"","name":"阿里云","status":9,"txt":"阿里云2折起","type":1,"updateTime":1736177492000,"userId":3},{"createTime":1735660800000,"id":4,"img":"vultr_560_300.png","link":"https://www.vultr.com/?ref=9603742-8H","name":"Vultr","status":9,"txt":"Vultr送$100","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":5,"img":"jdy_663_320.jpg","link":"https://3.cn/2ay1-e5t","name":"京东云","status":9,"txt":"京东云特惠专区","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":6,"img":"new_ads.png","link":"https://www.iodraw.com/ads","name":"发布广告","status":9,"txt":"发布广告","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":7,"img":"yun_910_50.png","link":"https://activity.huaweicloud.com/discount_area_v5/index.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=aXhpYW95YW5nOA===&utm_medium=cps&utm_campaign=201905","name":"底部","status":9,"txt":"高性能云服务器2折起","type":2,"updateTime":1735660800000,"userId":3}]
springboot + mybatis-plus架构下：
让非主键字段以注解方式自动生成32位uuid：
* 自定义注解如下 @Documented @Retention(RetentionPolicy.RUNTIME) @Target({
ElementType.FIELD, ElementType.ANNOTATION_TYPE}) public @interface GenerateUUID
{ String value() default ""; }
* 在字段上的应用方式 @GenerateUUID @TableField(fill = FieldFill.INSERT) private String
uuidCode;
其中
@TableField(fill = FieldFill.INSERT)
为mybatis-plus中设置的引用方法。引用方法设置如下：
3. 实现MetaObjectHandler接口，如上注解为insert则走insertFill方法
@Component public class MyMetaObjectHandler implements MetaObjectHandler {
@Override public void insertFill(MetaObject metaObject) { Object originalObject
= metaObject.getOriginalObject(); try{ Class clazz = originalObject.getClass();
for (Field declaredField : clazz.getDeclaredFields()) { declaredField.
setAccessible(true); if (declaredField.isAnnotationPresent(GenerateUUID.class)
&& declaredField.get(originalObject) == null){ this.setFieldValByName(
declaredField.getName(),IdWorker.get32UUID(),metaObject); } } } catch (
IllegalAccessException e) { e.printStackTrace(); } } @Override public void
updateFill(MetaObject metaObject) { } }
