JPA:创建自定义ID注释

我正在为我的实体的id字段创建一个新的自定义id注释:

@Id
@GeneratedValue(generator = RandomAlphanumericIdGenerator.generatorName)
@GenericGenerator(name = RandomAlphanumericIdGenerator.generatorName, strategy = "com.boot.myproject.utils.RandomAlphanumericIdGenerator")
private String id;

它工作得很好。但我想把这三个注释组合在一个新注释下:

@Id
@GeneratedValue(generator = RandomAlphanumericIdGenerator.generatorName)
@GenericGenerator(name = RandomAlphanumericIdGenerator.generatorName, strategy = "com.boot.myproject.utils.RandomAlphanumericIdGenerator")
@Target({FIELD})
@Retention(RUNTIME)
public @interface RandomAlphanumericId {

}

The annotation @Id is disallowed for this location .