Mybatis - plus automatic filling is how to match the class attribute createTime and field names crea-CodePudding

 @ Data 
Public class User {
private Long id; Don't write Long Long//pit 
private String name; 
Private Integer age; 
Private String email; 
@ TableField (fill=FieldFill. INSERT) 
Private Date createTime; 
@ TableField (fill=FieldFill INSERT_UPDATE) 
private Date updateTime; 
}

 @ Slf4j 
@ Component 
Public class CustomMetaObjectHandler implements MetaObjectHandler {
@ Override 
Public void insertFill (MetaObject MetaObject) {
The log. The info (" start insert the fill... "); 
Enclosing setFieldValByName (" createTime ", new Date (), metaObject); 
Enclosing setFieldValByName (" updateTime ", new Date (), metaObject); 
} 

@ Override 
Public void updateFill (MetaObject MetaObject) {
The info (" start update the fill... "); 
Enclosing setFieldValByName (" updateTime ", new Date (), metaObject); 
} 
}

 @ Test 
Public void testInsert () {
User user=new User(); 
User. SetAge (18); 
User. Elegantly-named setName (" yx "); 
User. SetEmail (" [email protected] "); 
Int result=userMapper. Insert (user); 
System. The out. Println (" affect the number of lines: "+ result); 
System. The out. Println (" id: "+ user); 
}

 Creating a new SqlSession 
SqlSession [org. Apache. Ibatis. Session. Defaults. DefaultSqlSession @ f2276c9] was not registered for synchronization because synchronization is not active 
15:51:32 2020-12-26. 8336-964 the INFO [main]. Com myd. Handler. CustomMetaObjectHandler: start insert the fill... 
The 2020-12-26 15:51:32. 8336-970 the INFO [main] com. Zaxxer. Hikari. HikariDataSource: HikariPool - 1 - Starting... 
The 15:51:33 2020-12-26. 8336-159 the INFO [main] com. Zaxxer. Hikari. HikariDataSource: HikariPool - 1 - Start completed. 
The JDBC Connection [HikariProxyConnection @ 1343838143 wrapping com. Mysql. Cj. JDBC. ConnectionImpl @ 5 d1d9d73] will not be managed by the Spring 
==& gt; Preparing: INSERT INTO user (id, name, age, email, create_time, update_time) VALUES (?,?,?,?,? ,? ,? ,? ,? ,? ) 
==& gt; The Parameters: 1342739812944273410 (Long), yx (String), 18 (Integer), [email protected] (String), the 2020-12-26 15:51:32. 964 (Timestamp), the 2020-12-26 15:51:32. 964 (Timestamp) 
<1 
==Updates:Closing non transactional SqlSession [org. Apache. Ibatis. Session. Defaults. DefaultSqlSession @ f2276c9] 
Impact of rows: 1 
Id: the User (id=1342739812944273410, name=yx, age=18, [email protected], createTime=Sat Dec 26 15:51:32 CST 2020, updateTime=Sat Dec 26 15:51:32 CST 2020) 
The 2020-12-26 15:51:33. 8336-226 the INFO [extShutdownHook] com. Zaxxer. Hikari. HikariDataSource: HikariPool - 1 - Shutdown initiated... 
The 2020-12-26 15:51:33. 8336-232 the INFO [extShutdownHook] com. Zaxxer. Hikari. HikariDataSource: HikariPool - 1 - Shutdown completed.

Mybatis - plus perform insert statement is how I knew my database field is create_time, update_time, how determined createTime attribute of the user class with the database field name create_time match? O great god answer