Qt5和cereal序列化实践

cereal是一个非常方便和强大的序列化开源库，可以和Qt5结合使用。

https://blog.csdn.net/gx864102252/article/details/81273742

https://www.findbestopensource.com/product/wush978-rcereal

当然boost.serialization也是可以的

https://www.cnblogs.com/cmranger/p/4772149.html

用过C#序列化的都会感觉非常方便和实用

1。实现写操作

CerealDates.h

#ifndef CEREALDATES_H
#define CEREALDATES_H

#include <iostream>
#include <fstream>
#include <string>
#include <cereal/archives/binary.hpp>
#include <cereal/archives/xml.hpp>
#include <cereal/archives/json.hpp>
#include <cereal/types/unordered_map.hpp>
#include <cereal/types/memory.hpp>
#include <cereal/types/string.hpp>  //一定要包含此文件，否则无法将std::string序列化为二进制形式，请看：https://github.com/USCiLab/cereal/issues/58

class CerealDates
{
public:
    CerealDates();
public:
    int x, y;
    float z;
    template<class Archive>
    void serialize(Archive & ar)
    {
        ar(CEREAL_NVP(x), CEREAL_NVP(y), CEREAL_NVP(z));
    }
    void set(int in1, int in2, float in3);
    void get(int &out1, int &out2, float &out3);
};

#endif // CEREALDATES_H

CerealDatesOp.h

#ifndef CEREALDATESOP_H
#define CEREALDATESOP_H

#include "cerealdates.h"

#include <iostream>
#include <fstream>
#include <string>
#include <cereal/archives/binary.hpp>
#include <cereal/archives/xml.hpp>
#include <cereal/archives/json.hpp>
#include <cereal/types/unordered_map.hpp>
#include <cereal/types/memory.hpp>
#include <cereal/types/string.hpp>  //一定要包含此文件，

#include <QString>

class CerealDatesOp
{
public:
    CerealDatesOp();

    QString filePath;
    CerealDates m_CerealDates;

    void load();
    void save();
};

#endif // CEREALDATESOP_H

CerealDatesOp.cpp

#include "cerealdatesop.h"
#include <QDebug>

CerealDatesOp::CerealDatesOp()
{
    filePath = "D:/cereal.json";

   int x = 0; int y =0;
   float z = .0;
   m_CerealDates.get(x, y, z);
   qDebug() << "x: " << x << " y: " << y << " z: " << z;
   m_CerealDates.set(5, 66, 3.1415);
    m_CerealDates.get(x, y, z);
   qDebug() << "x: " << x << " y: " << y << " z: " << z;
   save();
}

void CerealDatesOp::load()
{
    CerealDates list;
    std::fstream in;
    {
        in.open(filePath.toStdString(), std::ios::in);
        cereal::JSONInputArchive archive(in);
        archive(list);
    }
    in.close();
    m_CerealDates = list;
}

void CerealDatesOp::save()
{
    qDebug() << "save begein: ";
    std::ofstream out;
    {
        out.open(filePath.toStdString(), std::ios::trunc);
        cereal::JSONOutputArchive archive(out);
        archive(m_CerealDates);
    }
    out.close();
    qDebug() << "save end";
}

测试代码：

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    CerealDatesOp op;

可以看到生成的文件

2。进行读数据操作


CerealDatesOp::CerealDatesOp()
{
    filePath = "D:/cereal.json";

   int x = 0; int y =0;
   float z = .0;
//   m_CerealDates.get(x, y, z);
//   qDebug() << "x: " << x << " y: " << y << " z: " << z;
//   m_CerealDates.set(5, 66, 3.1415);
//    m_CerealDates.get(x, y, z);
//   qDebug() << "x: " << x << " y: " << y << " z: " << z;
//   save();

   load();
   m_CerealDates.get(x, y, z);
   qDebug() << "x: " << x << " y: " << y << " z: " << z;
}

运行结果：

多谢，亲爱的美美。

Qt5和cereal序列化实践

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