序列化结构 [英] Serialization of struct

问题描述

假设我有一个结构体的成员值，我想通过网络发送到另一个系统使用winsock 2.我使用C ++语言。
如何将它转换为char *记住结构必须在发送之前序列化，以及我如何反序列化char *到另一端的结构？我发现boost序列化作为类似问题的建议，但任何人都可以用一个小的代码片段用于序列化和反序列化？

这个问题可能看起来很基本，但其他答案

下面的例子显示了一个最简单的方法来序列化 struct

/ code>转换为 char 数组并反序列化。

  #include< iostream> 
 #include< cstring> 
 
 #define BUFSIZE 512 
 #define PACKETSIZE sizeof（MSG）
 
 using namespace std; 
 
 typedef struct MSG 
 {
 int type; 
 int priority; 
 int sender; 
 char message [BUFSIZE]; 
} MSG; 
 
 void serialize（MSG * msgPacket，char * data）; 
 void deserialize（char * data，MSG * msgPacket）; 
 void printMsg（MSG * msgPacket）; 
 
 int main（）
 {
 MSG * newMsg = new MSG; 
 newMsg-> type = 1; 
 newMsg-> priority = 9; 
 newMsg-> sender = 2; 
 strcpy（newMsg-> message，hello from server\0）; 
 printMsg（newMsg）; 
 
 char data [PACKETSIZE]; 
 
 serialize（newMsg，data）; 
 
 MSG * temp = new MSG; 
 deserialize（data，temp）; 
 printMsg（temp）; 
 
 return 0; 
} 
 
 void serialize（MSG * msgPacket，char * data）
 {
 int * q =（int *）data; 
 * q = msgPacket-> type; q ++; 
 * q = msgPacket-> priority; q ++; 
 * q = msgPacket-> sender; q ++; 
 
 char * p =（char *）q; 
 int i = 0; 
 while（i  {
 * p = msgPacket-> message [i]; 
 p ++; 
 i ++ 
} 
} 
 
 void deserialize（char * data，MSG * msgPacket）
 {
 int * q =（int *）data; 
 msgPacket-> type = * q; q ++; 
 msgPacket-> priority = * q; q ++; 
 msgPacket-> sender = * q; q ++; 
 
 char * p =（char *）q; 
 int i = 0; 
 while（i  {
 msgPacket-> message [i] = * p; 
 p ++; 
 i ++; 
} 
} 
 
 void printMsg（MSG * msgPacket）
 {
 cout< msgPacket-> type<< endl; 
 cout<< msgPacket-> priority<< endl; 
 cout<< msgPacket-> sender<< endl; 
 cout<< msgPacket-> message<< endl; 
} 
  

Suppose i have a struct whose member values i want to send over the network to another system using winsock 2. I'm using C++ language. How do i convert it to char * keeping in mind that the struct has to be serialized before sending and also how do i deserialize the char * into struct at the other end? I found boost serialization as a suggestion to similar question but can anyone illustrate with a small code snippet for both serialization and deserialization ?

This question might seem very basic but the other answers to the related posts did not help much.

解决方案

Following example shows a simplest way to serialize struct into char array and de-serialize it.

#include <iostream>
#include <cstring>

#define BUFSIZE 512
#define PACKETSIZE sizeof(MSG)

using namespace std;

typedef struct MSG
{
    int type;
    int priority;
    int sender;
    char message[BUFSIZE];
}MSG;

void serialize(MSG* msgPacket, char *data);
void deserialize(char *data, MSG* msgPacket);
void printMsg(MSG* msgPacket);

int main()
{
    MSG* newMsg = new MSG;
    newMsg->type = 1;
    newMsg->priority = 9;
    newMsg->sender = 2;
    strcpy(newMsg->message, "hello from server\0");
    printMsg(newMsg);

    char data[PACKETSIZE];

    serialize(newMsg, data);

    MSG* temp = new MSG;
    deserialize(data, temp);
    printMsg(temp);

    return 0;
}

void serialize(MSG* msgPacket, char *data)
{
    int *q = (int*)data;    
    *q = msgPacket->type;       q++;    
    *q = msgPacket->priority;   q++;    
    *q = msgPacket->sender;     q++;

    char *p = (char*)q;
    int i = 0;
    while (i < BUFSIZE)
    {
        *p = msgPacket->message[i];
        p++;
        i++;
    }
}

void deserialize(char *data, MSG* msgPacket)
{
    int *q = (int*)data;    
    msgPacket->type = *q;       q++;    
    msgPacket->priority = *q;   q++;    
    msgPacket->sender = *q;     q++;

    char *p = (char*)q;
    int i = 0;
    while (i < BUFSIZE)
    {
        msgPacket->message[i] = *p;
        p++;
        i++;
    }
}

void printMsg(MSG* msgPacket)
{
    cout << msgPacket->type << endl;
    cout << msgPacket->priority << endl;
    cout << msgPacket->sender << endl;
    cout << msgPacket->message << endl;
}

这篇关于序列化结构的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！