如何动态修改嵌套的rapidjson对象？

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

using namespace rapidjson;

void ModifyNestedObject(Value& object, const std::string& key, const std::string& newValue) {
    // 检查根对象是否为Object类型
    if (!object.IsObject()) {
        std::cout << "Error: The root object is not an Object." << std::endl;
        return;
    }

    // 遍历根对象的成员
    for (Value::MemberIterator it = object.MemberBegin(); it != object.MemberEnd(); ++it) {
        const std::string& memberKey = it->name.GetString();

        // 判断成员是否是要修改的键
        if (memberKey == key) {
            Value& memberValue = it->value;

            // 如果成员是Object类型，递归修改嵌套对象
            if (memberValue.IsObject()) {
                ModifyNestedObject(memberValue, key, newValue);
            }
            // 如果成员是String类型，修改其值
            else if (memberValue.IsString()) {
                memberValue.SetString(newValue.c_str(), newValue.length());
            }
            // 其他类型的成员，根据需求进行相应的修改操作

            return; // 找到了要修改的键，结束函数执行
        }
    }

    std::cout << "Error: Key not found in the object." << std::endl;
}

int main() {
    std::string json = R"(
        {
            "key1": {
                "key2": {
                    "key3": "value"
                }
            }
        }
    )";

    Document document;
    document.Parse(json.c_str());

    // 修改嵌套对象的键值
    ModifyNestedObject(document, "key3", "new value");

    // 将修改后的JSON对象转换为字符串
    StringBuffer buffer;
    Writer<StringBuffer> writer(buffer);
    document.Accept(writer);

    std::cout << buffer.GetString() << std::endl;

    return 0;
}