Is it possiable to use reflection to access a object's private field and call a public methods on this field?
i.e
class Hello {
private World word
}
class World {
public BlaBlaBla foo()
}
Hello h = new Hello()
World world = reflect on the h
// And then
world.foo()
使用反射可以使private个字段变为accessible.下面的例子(都写在Kotlin中)展示了它...
Using Java Reflection:
val hello = Hello()
val f = hello::class.java.getDeclaredField("world")
f.isAccessible = true
val w = f.get(hello) as World
println(w.foo())
使用Kotlin个反射:
val hello = Hello()
val f = Hello::class.memberProperties.find { it.name == "world" }
f?.let {
it.isAccessible = true
val w = it.get(hello) as World
println(w.foo())
}