How to write the code that mybatisPlus automatically populates the update time?

In this issue, the editor will bring you how to write the code about mybatisPlus automatic filling update time. The article is rich in content and analyzes and describes for you from a professional point of view. I hope you can get something after reading this article.

1. Comments on entity classes

@ NoArgsConstructor@AllArgsConstructor@Datapublic class User {@ TableId (type = IdType.AUTO) private Long id; private String name; private Integer age; private String email; @ TableField (fill = FieldFill.INSERT) private Date createTime; @ TableField (fill = FieldFill.INSERT_UPDATE) private Date updateTime;}

two。 Treatment of annotations

Component@Slf4jpublic class MyDetaObjectHander implements MetaObjectHandler {@ Override public void insertFill (MetaObject metaObject) {log.info ("come to insert fill."); / / setFieldValByName (String fieldName, Object fieldVal, MetaObject metaObject) this.setFieldValByName ("createTime", new Date (), metaObject); this.setFieldValByName ("updateTime", new Date (), metaObject) @ Override public void updateFill (MetaObject metaObject) {log.info ("come to update fill."); this.setFieldValByName ("updateTime", new Date (), metaObject);}}

3. Add and modify tests

/ / add user @ Test public void addUser () {User user = new User (); user.setAge (23); user.setEmail ("168@qq.com"); user.setName ("gwq"); int insert = userDao.insert (user); System.out.println (insert);} @ Test public void update () {User user = new User () User.setAge (23); user.setEmail ("168@qq.com"); user.setName ("gwq"); user.setId (1299641789988229125L); int I = userDao.updateById (user); System.out.println (I) } above is how to write the code that the editor shares with mybatisPlus to automatically fill in the update time. If you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.