如何将json c++与我自己的对象一起使用？

#include <iostream>
#include <string>
#include "rapidjson/document.h"
#include "rapidjson/writer.h"
#include "rapidjson/stringbuffer.h"

using namespace rapidjson;

// 自定义对象
class Person {
public:
    std::string name;
    int age;
    std::string address;

    // 序列化为JSON格式的字符串
    std::string toJson() const {
        StringBuffer buffer;
        Writer<StringBuffer> writer(buffer);

        writer.StartObject();
        writer.Key("name");
        writer.String(name.c_str());
        writer.Key("age");
        writer.Int(age);
        writer.Key("address");
        writer.String(address.c_str());
        writer.EndObject();

        return buffer.GetString();
    }

    // 从JSON格式的字符串反序列化为对象
    void fromJson(const std::string& json) {
        Document document;
        document.Parse(json.c_str());

        if (document.HasMember("name") && document["name"].IsString()) {
            name = document["name"].GetString();
        }

        if (document.HasMember("age") && document["age"].IsInt()) {
            age = document["age"].GetInt();
        }

        if (document.HasMember("address") && document["address"].IsString()) {
            address = document["address"].GetString();
        }
    }
};

int main() {
    // 创建自定义对象
    Person person;
    person.name = "John";
    person.age = 30;
    person.address = "123 Main St";

    // 序列化为JSON格式的字符串
    std::string json = person.toJson();
    std::cout << "Serialized JSON: " << json << std::endl;

    // 反序列化为自定义对象
    Person deserializedPerson;
    deserializedPerson.fromJson(json);
    std::cout << "Deserialized Person: " << deserializedPerson.name << ", " << deserializedPerson.age << ", " << deserializedPerson.address << std::endl;

    return 0;
}