如何使用Java 8将方法传递给注释? [英] How do I pass a method to an annotation using Java 8?

问题描述

我想将方法​​传递给注释.这样可能吗?

I would like to pass a method to an annotation. Is something like this possible?

@MyAnnotation(method = MyClass::myMethod)
private String myVariable;

推荐答案

传递方法不是一种选择.相反，请传递以下内容，该内容应允许您使用反射查找方法.

Passing a method isn't an option. Instead, pass the following which should allow you to find the method using reflection.

@MyAnnotation(clazz=String.class, method="contains", params= {CharSequence.class})

@interface MyAnnotation {
   Class<?> clazz();
   String method();
   Class<?>[] params() default {};
}

MyAnnotation annotation = // get the annotation
annotation.clazz().getMethod(annotation.method(), annotation.params());

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