boost序列化多态类指针的例子

最新推荐文章于 2023-09-20 17:45:13 发布

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最新推荐文章于 2023-09-20 17:45:13 发布

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本文链接：https://blog.youkuaiyun.com/tangyin025/article/details/12522013

本文介绍了一个使用Boost库进行对象序列化的C++示例。该示例定义了抽象基类A及两个派生类A_1和A_2，并演示了如何将派生类对象序列化到文件中再反序列化出来。

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#define BOOST_ALL_NO_LIB
#include <iostream>
#include <fstream>
#include <boost/archive/text_iarchive.hpp>
#include <boost/archive/text_oarchive.hpp>
#include <boost/serialization/export.hpp>

class A
{
public:
	int a;
	A() : a(0) {}
	virtual void foo() = 0;
	friend class boost::serialization::access;
	template<class Archive>
	void serialize(Archive & ar, const unsigned int version)
	{
		ar & a;
	}
};

BOOST_SERIALIZATION_ASSUME_ABSTRACT(A)

class A_1 : public A
{
public:
	int a1;
	A_1() { a=1; a1=11;}
	virtual void foo() { std::cout << "A_1:" << a << ", " << a1 << std::endl; }
	template<class Archive>
	void serialize(Archive & ar, const unsigned int version)
	{
		ar & boost::serialization::base_object<A>(*this);
		ar & a1;
	}
};

BOOST_CLASS_EXPORT(A_1)

class A_2 : public A
{
public:
	int a2;
	A_2() { a=2; a2=22;}
	virtual void foo() { std::cout << "A_2:" << a << ", " << a2 << std::endl; }
	template<class Archive>
	void serialize(Archive & ar, const unsigned int version)
	{
		ar & boost::serialization::base_object<A>(*this);
		ar & a2;
	}
};

BOOST_CLASS_EXPORT(A_2)

int main(int argc, char ** argv)
{
	A * pa = new A_2();
	std::ofstream ofs("aaa.txt");
	boost::archive::text_oarchive oa(ofs);
	oa << pa;
	ofs.close();

	A * pa2;
	std::ifstream ifs("aaa.txt");
	boost::archive::text_iarchive ia(ifs);
	ia >> pa2;
	ifs.close();
	return 0;
}