实现从复杂java对象检索特定字段的kotlin泛型函数。

import kotlin.reflect.KProperty1
import kotlin.reflect.full.memberProperties

inline fun <reified T, reified R> searchField(obj: T, fieldName: String): R? {
    val property = T::class.memberProperties.find { it.name == fieldName }
    return if (property is KProperty1<T, R>) {
        property.get(obj)
    } else {
        null
    }
}

// 示例使用
data class Person(val name: String, val age: Int)

fun main() {
    val person = Person("Alice", 25)
    val name: String? = searchField<Person, String>(person, "name")
    val age: Int? = searchField<Person, Int>(person, "age")
    println("Name: $name, Age: $age")
}