是否可以将方法参数传递给方法上的注释? [英] Is it possible to pass method parameter to annotation on a method?

问题描述

假设我们有这个带有注解的方法:

Let's say we have this method with annotation:

@Cached(key="search" + id)
public static List<String> search(String id) {
    //...
}

我想将参数id"传递给@Cached 注释的键.

I want to pass parameter "id" to the @Cached annotation's key.

可以在java中做到这一点吗?

Is it possible to do this in java?

推荐答案

没有.这是不可能的.

Java 注释的属性必须是 Java 语言规范中定义的常量表达式 (http://docs.oracle.com/javase/specs/jls/se7/html/jls-15.html#jls-15.28)

Attributes of Java Annotations must be constant expressions as defined by the Java Language Specification (http://docs.oracle.com/javase/specs/jls/se7/html/jls-15.html#jls-15.28)

我认为您的问题之前已经得到解答:摆脱"注解属性的值必须是一个常量表达式"留言

I think your question has been answered before: Get rid of "The value for annotation attribute must be a constant expression" message

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