java - 持有其他注释的注释成员？

Question

我想创建一个自定义注释(使用 Java)，它将接受其他注释作为参数，例如:

public @interface ExclusiveOr {
    Annotation[] value();
}

但这会导致编译器错误“注解成员的类型无效”。

Object[] 也不起作用。

有没有办法做我想做的事？

Answer 1

错误产生是因为你不能使用接口(interface)作为注解值(把它改成Comparable，你会得到同样的错误)。来自JLS :

It is a compile-time error if the return type of a method declared in an annotation type is any type other than one of the following: one of the primitive types, String, Class and any invocation of Class, an enum type, an annotation type, or an array of one of the preceding types. It is also a compile-time error if any method declared in an annotation type has a signature that is override-equivalent to that of any public or protected method declared in class Object or in the interface annotation.Annotation.

恐怕我不知道一个好的解决方法，但现在至少您知道为什么会收到错误。