使用Java 8出现注释时添加另一个注释

发布于 2025-01-28 13:44:21 字数 854 浏览 4 评论 0原文

我目前正在创建自己的CRUD管理课程。为此，我处理的是这样的注释：

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
public @interface DTO {
    String table() default "";
}

带有此注释注释的每个对象还需要从LOMBOK中使用“ Noargsconstructor” - 宣布，只能应用于类或枚举类型。因此，我不能仅仅将其添加到DTO定义的注释之上。我该如何实现，每个具有DTO通道的班级也可以接收Noargsconstructor，而无需每次手动添加它？

这很好：

@Data
@NoArgsConstructor
@DTO(table = "cast2")
public class CastDTO {
    @Column
    private Integer mid;
    @Column
    private Integer pid;
    @Column
    private String role;
}

但是我宁愿每次创建另一个类时都不必添加noargsconstructor。

原文

I am currently creating my own CRUD-managing class. For this purpose I work with an annotation that looks like this:

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
public @interface DTO {
    String table() default "";
}

Every object annotated with this annotation also needs to have the "NoArgsConstructor"-Annotation from lombok, which can only be applied to class or enum types. Therefore I cannot just add it on top of the annotations of the definition of DTO. How can I achieve, that every class that has the DTO-Annotation also receives the NoArgsConstructor without it being required to add it every time manually?

This works fine:

@Data
@NoArgsConstructor
@DTO(table = "cast2")
public class CastDTO {
    @Column
    private Integer mid;
    @Column
    private Integer pid;
    @Column
    private String role;
}

but I'd rather not have to add NoArgsConstructor every time I create another Class.

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