問題描述

我有一個小的對象層次結構，我需要通過套接字連接序列化和傳輸這些對象.我需要序列化對象，然后根據它的類型反序列化它.在 C++ 中有沒有一種簡單的方法可以做到這一點(就像在 Java 中一樣)?

是否有 C++ 序列化在線代碼示例或教程?

明確地說，我正在尋找將對象轉換為字節數組，然后再轉換回對象的方法.我可以處理套接字傳輸.

談序列化，boost 序列化 API.至于通過網絡傳輸序列化數據，我要么使用伯克利套接字，要么使用 asio 庫.>

如果要將對象序列化為字節數組，可以按以下方式使用 boost 序列化器(取自教程站點):

#include #include 類 gps_position{私人的:友元類 boost::serialization::access;模板<類存檔>void serialize(Archive & ar, const unsigned int version){和度；和分鐘;和秒；}整數度；整數分鐘；浮動秒；民眾:gps_position(){};gps_position(int d, int m, float s) :度(d)、分(m)、秒(s){}};

實際的序列化非常簡單:

#include std::ofstream ofs("filename.dat", std::ios::binary);//創建類實例const gps_position g(35, 59, 24.567f);//保存數據到存檔{boost::archive::binary_oarchive oa(ofs);//將類實例寫入存檔oa＜＜G;//調用析構函數時存檔和流關閉}

反序列化的工作方式類似.

還有一些機制可以讓您處理指針的序列化(復雜的數據結構，如 tres 等沒有問題)，派生類，您可以在二進制和文本序列化之間進行選擇.此外，所有 STL 容器都是開箱即用的.

I have a small hierarchy of objects that I need to serialize and transmit via a socket connection. I need to both serialize the object, then deserialize it based on what type it is. Is there an easy way to do this in C++ (as there is in Java)?

Are there any C++ serialization online code samples or tutorials?

EDIT: Just to be clear, I'm looking for methods on converting an object into an array of bytes, then back into an object. I can handle the socket transmission.

Talking about serialization, the boost serialization API comes to my mind. As for transmitting the serialized data over the net, I'd either use Berkeley sockets or the asio library.

Edit:
If you want to serialize your objects to a byte array, you can use the boost serializer in the following way (taken from the tutorial site):

#include <boost/archive/binary_oarchive.hpp>
#include <boost/archive/binary_iarchive.hpp>
class gps_position
{
private:
    friend class boost::serialization::access;
    template<class Archive>
    void serialize(Archive & ar, const unsigned int version)
    {
        ar & degrees;
        ar & minutes;
        ar & seconds;
    }
    int degrees;
    int minutes;
    float seconds;

public:
    gps_position(){};
    gps_position(int d, int m, float s) :
    degrees(d), minutes(m), seconds(s)
    {}
};

Actual serialization is then pretty easy:

#include <fstream>
std::ofstream ofs("filename.dat", std::ios::binary);

    // create class instance
    const gps_position g(35, 59, 24.567f);

    // save data to archive
    {
        boost::archive::binary_oarchive oa(ofs);
        // write class instance to archive
        oa << g;
        // archive and stream closed when destructors are called
    }

Deserialization works in an analogous manner.

There are also mechanisms which let you handle serialization of pointers (complex data structures like tress etc are no problem), derived classes and you can choose between binary and text serialization. Besides all STL containers are supported out of the box.

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