官网：https://mybatis-mp.cn

mybatis-mp之亮点一：可动态默认值

 @Table @Data public class DefaultValueTest { @TableId @TableId(dbType = DbType.ORACLE, value = IdAutoType.SQL, sql = "select default_value_test_seq.NEXTVAL FROM dual") @TableId(dbType = DbType.KING_BASE, value = IdAutoType.SQL, sql = "select default_value_test_seq.NEXTVAL FROM dual") private Integer id; @TableField(defaultValue = "{BLANK}") private String value1; @TableField(defaultValue = "1", updateDefaultValue = "2") private Integer value2; @TableField(updateDefaultValue = "4") private Integer value4; @TableField(defaultValue = "{NOW}") private LocalDateTime createTime; private TestEnum value3; }

1：@TableField 即可设置 插入defaultValue默认值  还可以设置修改updateDefaultValue默认值

2：默认值可以是静态默认，还可以动态默认值例如上面{BLANK}，{NOW}；除官网设置的这2个，你可以自己定义动态默认值

 如何自定义动态默认值？

 MybatisMpConfig.setDefaultValue("{NOW}",type->{ if (type == String.class) { return StringPool.EMPTY; } else if (type.isArray()) { return Array.newInstance(type, 0); } else if (List.class.isAssignableFrom(type)) { return Collections.EMPTY_LIST; } else if (Set.class.isAssignableFrom(type)) { return Collections.EMPTY_SET; } else if (Map.class.isAssignableFrom(type)) { return Collections.EMPTY_MAP; } throw new RuntimeException("Inconsistent types"); });

此注册代码需要放到项目启动时执行

是不是很简单，很符合开发者的直观体验，快来加入吧