1.實(shí)體類上的注解
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@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;} |
2.對(duì)注解的處理
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@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.進(jìn)行添加和修改測(cè)試
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//添加用戶 @Test public void addUser(){ User user = new User(); user.setAge(23); user.setName("gwq"); int insert = userDao.insert(user); System.out.println(insert); } @Test public void update(){ User user = new User(); user.setAge(23); user.setName("gwq"); user.setId(1299641789988229125L); int i = userDao.updateById(user); System.out.println(i); } |
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原文鏈接：https://www.cnblogs.com/ghwq/p/13583110.html
