Kotlin 获取声明的成员属性值

Question

Class#getDeclaredField 的等效代码是什么？在 Kotlin ？我正在寻找纯 Kotlin 实现……也许是一种反射(reflection)？

class Test {
    public static final String TEST = "Hello";
    public static void main(String[] args) {
        System.out.println(
            Test.class.getDeclaredField("TEST").get(Test.class));
    }
}

Answer 1

首先，添加这个依赖以避免运行时错误

<dependency>
    <groupId>org.jetbrains.kotlin</groupId>
    <artifactId>kotlin-reflect</artifactId>
    <version>1.3.50</version>
</dependency>

然后:

val member = Test::class.members.find { it.name=="TEST" }
println(member)
println(member.call(Test())

输出:

val generic.Test.TEST: kotlin.String
Hello

成员类型是Kcallable<*>?

https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.reflect/-k-callable/index.html