C++ 如何通过指向基类的指针序列化派生类?派生::未调用序列化
我试图通过使用指向基类的指针进行boost序列化,使派生类可序列化 已调用Base::序列化。派生::未调用序列化 我做错了什么C++ 如何通过指向基类的指针序列化派生类?派生::未调用序列化,c++,serialization,boost,polymorphism,C++,Serialization,Boost,Polymorphism,我试图通过使用指向基类的指针进行boost序列化,使派生类可序列化 已调用Base::序列化。派生::未调用序列化 我做错了什么 #include <sstream> #include <boost/archive/binary_oarchive.hpp> #include <boost/serialization/serialization.hpp> #include <boost/serialization/assume_abstract.hpp&g
#include <sstream>
#include <boost/archive/binary_oarchive.hpp>
#include <boost/serialization/serialization.hpp>
#include <boost/serialization/assume_abstract.hpp>
struct Base
{
int x;
Base() { x = 0; }
virtual ~Base() {}
template<class Archive>
void serialize(Archive &ar, const unsigned int version)
{
ar & x;
}
};
BOOST_SERIALIZATION_ASSUME_ABSTRACT(Base)
struct Derived : Base
{
int y;
Derived() { x = 1; y = 2; }
virtual ~Derived() {}
template<class Archive>
void serialize(Archive & ar, const unsigned int version)
{
ar & boost::serialization::base_object<Base>(*this);
ar & y;
}
};
int main()
{
Derived derived;
Base *basePtr = &derived;
std::string s;
std::stringstream ss(s);
boost::archive::binary_oarchive oa(ss);
oa << *basePtr;
}
#包括
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结构基
{
int x;
Base(){x=0;}
虚拟~Base(){}
模板
无效序列化(存档和ar,常量未签名整数版本)
{
ar&x;
}
};
BOOST\u序列化\u假设\u抽象(基本)
派生结构:基
{
int-y;
派生(){x=1;y=2;}
虚~Derived(){}
模板
无效序列化(存档和ar,常量未签名整数版本)
{
ar&boost::serialization::base_对象(*this);
ar&y;
}
};
int main()
{
派生的;
Base*basePtr=&派生的;
std::字符串s;
标准::stringstream ss(s);
boost::archive::binary_oarchive oa(ss);
oa首先,您没有通过指针序列化,请修复它:
oa << basePtr;
已编辑。仍然不起作用。如果您谈论void serialize:成员函数模板不能是虚拟的。事实上,允许RTTI必须将涉及的类型设置为虚拟的(请注意,Boost Any in在Boost 1.57.0中不再需要RTTI,也许将来Boost序列化也可以采用这种技术)输入不起作用。你能帮我吗?问题已编辑。请稍等。是吗,只是想问一个不同的问题/?你应该发布一个新问题。如果你问我,这是一个非常愚蠢的举动。
oa.register_type<Derived>();
ar.template register_type<Derived>();
#include <sstream>
#include <boost/archive/binary_oarchive.hpp>
#include <boost/archive/binary_iarchive.hpp>
#include <boost/serialization/serialization.hpp>
#include <boost/serialization/assume_abstract.hpp>
struct Derived;
struct Base
{
int x;
Base() { x = 0; }
virtual ~Base() {}
template<class Archive>
void serialize(Archive &ar, const unsigned int version)
{
ar.template register_type<Derived>();
ar & x;
}
};
BOOST_SERIALIZATION_ASSUME_ABSTRACT(Base)
struct Derived : Base
{
int y;
Derived() { x = 1; y = 2; }
virtual ~Derived() {}
template<class Archive>
void serialize(Archive & ar, const unsigned int version)
{
ar & boost::serialization::base_object<Base>(*this);
ar & y;
}
};
int main()
{
std::stringstream ss;
{
Derived derived;
Base *basePtr = &derived;
boost::archive::binary_oarchive oa(ss);
oa.register_type<Derived>();
oa << basePtr;
ss.flush();
}
{
boost::archive::binary_iarchive ia(ss);
ia.register_type<Derived>();
Base *basePtr = nullptr;
ia >> basePtr;
std::cout << "basePtr->x = " << basePtr->x << "\n";
if (Derived* derivedPtr = dynamic_cast<Derived*>(basePtr))
std::cout << "derivedPtr->y = " << derivedPtr->y << "\n";
}
}