如何从jni C++函数返回vector<Point>？

#include <vector>

struct Point {
    int x;
    int y;
};

std::vector<Point> getPoints() {
    std::vector<Point> points;
    // 添加一些点到vector中
    Point p1 = {1, 2};
    Point p2 = {3, 4};
    points.push_back(p1);
    points.push_back(p2);
    return points;
}

#include <jni.h>
#include <vector>

struct Point {
    int x;
    int y;
};

extern "C" {
    JNIEXPORT jobject JNICALL Java_com_example_MyClass_getPoints(JNIEnv* env, jobject obj) {
        // 调用C++函数获取vector<Point>对象
        std::vector<Point> points = getPoints();

        // 创建ArrayList对象
        jclass arrayListClass = env->FindClass("java/util/ArrayList");
        jmethodID arrayListConstructor = env->GetMethodID(arrayListClass, "<init>", "()V");
        jobject arrayListObj = env->NewObject(arrayListClass, arrayListConstructor);

        // 获取ArrayList的add方法
        jmethodID arrayListAddMethod = env->GetMethodID(arrayListClass, "add", "(Ljava/lang/Object;)Z");

        // 将vector<Point>中的点添加到ArrayList中
        jclass pointClass = env->FindClass("com/example/Point");
        jmethodID pointConstructor = env->GetMethodID(pointClass, "<init>", "(II)V");
        for (const auto& point : points) {
            jobject pointObj = env->NewObject(pointClass, pointConstructor, point.x, point.y);
            env->CallBooleanMethod(arrayListObj, arrayListAddMethod, pointObj);
        }

        return arrayListObj;
    }
}

package com.example;

import java.util.ArrayList;

public class MyClass {
    static {
        System.loadLibrary("mylib");
    }

    public native ArrayList<Point> getPoints();

    public static void main(String[] args) {
        MyClass myClass = new MyClass();
        ArrayList<Point> points = myClass.getPoints();
        for (Point point : points) {
            System.out.println("x: " + point.x + ", y: " + point.y);
        }
    }
}