使用模板类升级序列化 [英] Boost serialization with template classes

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问题描述

我在linux中为现有的C ++项目添加了boost序列化支持。在那个项目中有模板类叫做ContainerT，MString是通过使用模板类型作为char派生的。

I'm adding boost serialization support for existing C++ project in linux. In that project there is Template class Called ContainerT and MString is derived from that class by using template type as char.

MString类型用于Person类，序列化Person类中的数据。Person类如下所示（由于实际项目很大，只有一部分在这里）

The MString type is used in Person Class and I want to serialize data in Person Class.The Person class is like below.(Since the actual project is large only part of it is given here)

#ifndef PERSON_H_
#define PERSON_H_

#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include <string>
#include <map>
#include "Container.h"
class Person
{
public:
    Person();
    Person(std::string _zName,int _iAge);
    ~Person();

private:    
    std::string z_Name;
    int i_Age;
    MString z_CountryCode;


    //Serailization
    //Allow serialization to access non-public data members.
    friend class boost::serialization::access;

    template <typename Archive> 
    void serialize(Archive &ar, const unsigned int version) 
    { 
        ar & z_Name; 
        ar & i_Age; 
        ar & z_CountryCode; 
    }   
};


#endif /* PERSON_H_ */

类如下。

#ifndef CONTAINER_H_
#define CONTAINER_H_


#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>

template<typename T>
class ContainerT;

template<typename T>
class ContainerDataT
{
public:
    ContainerDataT();
    ~ContainerDataT(){};

    T*  GetData(){return p_Data;};

private:
    friend class ContainerT<T>;

    T           p_Data[];

    friend class boost::serialization::access;
    template<class Archive>
    void serialize(Archive &ar, const unsigned int file_version)
    {
        ar & p_Data;
    }
};

template<typename T>
class ContainerT
{
public:

    ContainerT();           
    ContainerT(const T* _zData);
    ~ContainerT();
    const T* GetMString() const;

private:

    ContainerDataT<T>*  p_Data;


    friend class boost::serialization::access;
    template<class Archive>
    void serialize(Archive &ar, const unsigned int file_version)
    {
        ar & p_Data;
    }
};

template<typename T>
ContainerT<T>::ContainerT()
{
    p_Data = (ContainerDataT<T>*)malloc(1);
    p_Data->GetData()[0] = 0;
}


template<typename T>
ContainerT<T>::ContainerT(const T* _zData)
{
    const T* pChar = _zData;

    while(*pChar != 0)
        ++pChar;
    int iLength = pChar - _zData;

    p_Data = (ContainerDataT<T>*)malloc(500);
    memcpy(p_Data->GetData(), _zData, iLength * sizeof(T));
    p_Data->GetData()[iLength] = 0;
}

template<typename T>
ContainerT<T>::~ContainerT()
{
    free(p_Data);
}

template<typename T>
const T* ContainerT<T>::GetMString() const
{
    return p_Data->GetData();
}


typedef ContainerT<char>    MString;

#endif /* CONTAINER_H_ */

当我尝试序列化MString时得到以下错误。如果我评论ar& z_CountryCode; Line在Person类中每一件事情都很好。有人可以帮助我识别这个问题。是否有任何特殊的方法来序列化模板类。

When I Compling the code I get the following errors when I try to serialize MString. If I commented the ar & z_CountryCode; line in Person class every thing is working fine. Can someone help me on identifying the issue with that. Is there any special way to serialize the template classes.?

/usr/include/boost/type_traits/is_abstract.hpp: In instantiation of ‘boost::detail::is_abstract_imp2<ContainerDataT<char> >’:
/usr/include/boost/type_traits/is_abstract.hpp:121:   instantiated from ‘const bool boost::detail::is_abstract_imp<ContainerDataT<char> >::value’
/usr/include/boost/type_traits/is_abstract.hpp:128:   instantiated from ‘boost::is_abstract<ContainerDataT<char> >’
/usr/include/boost/serialization/is_abstract.hpp:32:   instantiated from ‘boost::serialization::is_abstract<ContainerDataT<char> >’
/usr/include/boost/mpl/if.hpp:67:   instantiated from ‘boost::mpl::if_<boost::serialization::is_abstract<ContainerDataT<char> >, boost::mpl::identity<boost::archive::detail::save_pointer_type<boost::archive::text_oarchive, ContainerDataT<char>*>::abstract<ContainerDataT<char> > >, boost::mpl::identity<boost::archive::detail::save_pointer_type<boost::archive::text_oarchive, ContainerDataT<char>*>::non_abstract<ContainerDataT<char> > > >’
/usr/include/boost/mpl/eval_if.hpp:37:   instantiated from ‘boost::mpl::eval_if<boost::serialization::is_abstract<ContainerDataT<char> >, boost::mpl::identity<boost::archive::detail::save_pointer_type<boost::archive::text_oarchive, ContainerDataT<char>*>::abstract<ContainerDataT<char> > >, boost::mpl::identity<boost::archive::detail::save_pointer_type<boost::archive::text_oarchive, ContainerDataT<char>*>::non_abstract<ContainerDataT<char> > > >’
/usr/include/boost/archive/detail/oserializer.hpp:359:   instantiated from ‘static const boost::archive::detail::basic_pointer_oserializer* boost::archive::detail::save_pointer_type<Archive, TPtr>::register_type(Archive&, T&) [with T = ContainerDataT<char>, Archive = boost::archive::text_oarchive, TPtr = ContainerDataT<char>*]’
/usr/include/boost/archive/detail/oserializer.hpp:460:   instantiated from ‘static void boost::archive::detail::save_pointer_type<Archive, TPtr>::invoke(Archive&, TPtr) [with Archive = boost::archive::text_oarchive, TPtr = ContainerDataT<char>*]’
/usr/include/boost/archive/detail/oserializer.hpp:536:   instantiated from ‘void boost::archive::save(Archive&, const T&) [with Archive = boost::archive::text_oarchive, T = ContainerDataT<char>*]’
/usr/include/boost/archive/basic_text_oarchive.hpp:78:   instantiated from ‘void boost::archive::basic_text_oarchive<Archive>::save_override(T&, int) [with T = ContainerDataT<char>* const, Archive = boost::archive::text_oarchive]’
/usr/include/boost/archive/detail/interface_oarchive.hpp:78:   instantiated from ‘Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = ContainerDataT<char>* const, Archive = boost::archive::text_oarchive]’
/usr/include/boost/archive/detail/interface_oarchive.hpp:86:   instantiated from ‘Archive& boost::archive::detail::interface_oarchive<Archive>::operator&(T&) [with T = ContainerDataT<char>*, Archive = boost::archive::text_oarchive]’
Container.h:52:   instantiated from ‘void ContainerT<T>::serialize(Archive&, unsigned int) [with Archive = boost::archive::text_oarchive, T = char]’
/usr/include/boost/serialization/access.hpp:109:   instantiated from ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = ContainerT<char>]’
/usr/include/boost/serialization/serialization.hpp:81:   instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = ContainerT<char>]’
/usr/include/boost/serialization/serialization.hpp:140:   instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = ContainerT<char>]’
/usr/include/boost/archive/detail/oserializer.hpp:148:   instantiated from ‘void boost::archive::detail::oserializer<Archive, T>::save_object_data(boost::archive::detail::basic_oarchive&, const void*) const [with Archive = boost::archive::text_oarchive, T = ContainerT<char>]’
Main.cpp:110:   instantiated from here
/usr/include/boost/type_traits/is_abstract.hpp:81: error: invalid application of ‘sizeof’ to incomplete type ‘boost::STATIC_ASSERTION_FAILURE<false>’
/usr/include/boost/archive/detail/oserializer.hpp: In static member function ‘static void boost::archive::detail::save_non_pointer_type<Archive, T>::invoke(Archive&, const T&) [with Archive = boost::archive::text_oarchive, T = char [0u]]’:
/usr/include/boost/archive/detail/oserializer.hpp:536:   instantiated from ‘void boost::archive::save(Archive&, const T&) [with Archive = boost::archive::text_oarchive, T = char [0u]]’
/usr/include/boost/archive/basic_text_oarchive.hpp:78:   instantiated from ‘void boost::archive::basic_text_oarchive<Archive>::save_override(T&, int) [with T = const char [0u], Archive = boost::archive::text_oarchive]’
/usr/include/boost/archive/detail/interface_oarchive.hpp:78:   instantiated from ‘Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = const char [0u], Archive = boost::archive::text_oarchive]’
/usr/include/boost/archive/detail/interface_oarchive.hpp:86:   instantiated from ‘Archive& boost::archive::detail::interface_oarchive<Archive>::operator&(T&) [with T = char [0u], Archive = boost::archive::text_oarchive]’
Container.h:29:   instantiated from ‘void ContainerDataT<T>::serialize(Archive&, unsigned int) [with Archive = boost::archive::text_oarchive, T = char]’
/usr/include/boost/serialization/access.hpp:109:   instantiated from ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = ContainerDataT<char>]’
/usr/include/boost/serialization/serialization.hpp:81:   instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = ContainerDataT<char>]’
/usr/include/boost/serialization/serialization.hpp:140:   instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = ContainerDataT<char>]’
/usr/include/boost/archive/detail/oserializer.hpp:226:   instantiated from ‘boost::archive::detail::pointer_oserializer<T, Archive>::pointer_oserializer() [with T = ContainerDataT<char>, Archive = boost::archive::text_oarchive]’
/usr/include/boost/archive/detail/oserializer.hpp:198:   instantiated from ‘const boost::archive::detail::pointer_oserializer<ContainerDataT<char>, boost::archive::text_oarchive> boost::archive::detail::pointer_oserializer<ContainerDataT<char>, boost::archive::text_oarchive>::instance’
/usr/include/boost/archive/detail/oserializer.hpp:190:   instantiated from ‘static const boost::archive::detail::pointer_oserializer<T, Archive>& boost::archive::detail::pointer_oserializer<T, Archive>::instantiate() [with T = ContainerDataT<char>, Archive = boost::archive::text_oarchive]’
/usr/include/boost/archive/detail/oserializer.hpp:515:   instantiated from ‘const boost::archive::detail::basic_pointer_oserializer& boost::archive::detail::instantiate_pointer_oserializer(Archive*, T*) [with Archive = boost::archive::text_oarchive, T = ContainerDataT<char>]’
/usr/include/boost/archive/detail/interface_oarchive.hpp:58:   instantiated from ‘const boost::archive::detail::basic_pointer_oserializer* boost::archive::detail::interface_oarchive<Archive>::register_type(const T*) [with T = ContainerDataT<char>, Archive = boost::archive::text_oarchive]’
/usr/include/boost/archive/detail/oserializer.hpp:344:   instantiated from ‘static const boost::archive::detail::basic_pointer_oserializer* boost::archive::detail::save_pointer_type<Archive, TPtr>::non_abstract<T>::register_type(Archive&) [with T = ContainerDataT<char>, Archive = boost::archive::text_oarchive, TPtr = ContainerDataT<char>*]’
/usr/include/boost/archive/detail/oserializer.hpp:360:   instantiated from ‘static const boost::archive::detail::basic_pointer_oserializer* boost::archive::detail::save_pointer_type<Archive, TPtr>::register_type(Archive&, T&) [with T = ContainerDataT<char>, Archive = boost::archive::text_oarchive, TPtr = ContainerDataT<char>*]’
/usr/include/boost/archive/detail/oserializer.hpp:460:   instantiated from ‘static void boost::archive::detail::save_pointer_type<Archive, TPtr>::invoke(Archive&, TPtr) [with Archive = boost::archive::text_oarchive, TPtr = ContainerDataT<char>*]’
/usr/include/boost/archive/detail/oserializer.hpp:536:   instantiated from ‘void boost::archive::save(Archive&, const T&) [with Archive = boost::archive::text_oarchive, T = ContainerDataT<char>*]’
/usr/include/boost/archive/basic_text_oarchive.hpp:78:   instantiated from ‘void boost::archive::basic_text_oarchive<Archive>::save_override(T&, int) [with T = ContainerDataT<char>* const, Archive = boost::archive::text_oarchive]’
/usr/include/boost/archive/detail/interface_oarchive.hpp:78:   instantiated from ‘Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = ContainerDataT<char>* const, Archive = boost::archive::text_oarchive]’
/usr/include/boost/archive/detail/interface_oarchive.hpp:86:   instantiated from ‘Archive& boost::archive::detail::interface_oarchive<Archive>::operator&(T&) [with T = ContainerDataT<char>*, Archive = boost::archive::text_oarchive]’
Container.h:52:   instantiated from ‘void ContainerT<T>::serialize(Archive&, unsigned int) [with Archive = boost::archive::text_oarchive, T = char]’
/usr/include/boost/serialization/access.hpp:109:   instantiated from ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = ContainerT<char>]’
/usr/include/boost/serialization/serialization.hpp:81:   instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = ContainerT<char>]’
/usr/include/boost/serialization/serialization.hpp:140:   instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = ContainerT<char>]’
/usr/include/boost/archive/detail/oserializer.hpp:148:   instantiated from ‘void boost::archive::detail::oserializer<Archive, T>::save_object_data(boost::archive::detail::basic_oarchive&, const void*) const [with Archive = boost::archive::text_oarchive, T = ContainerT<char>]’
Main.cpp:110:   instantiated from here
/usr/include/boost/archive/detail/oserializer.hpp:316: error: invalid application of ‘sizeof’ to incomplete type ‘boost::STATIC_ASSERTION_FAILURE<false>’
/usr/include/boost/archive/detail/iserializer.hpp: In static member function ‘static void boost::archive::detail::load_non_pointer_type<Archive, T>::invoke(Archive&, T&) [with Archive = boost::archive::text_iarchive, T = char [0u]]’:
/usr/include/boost/archive/detail/iserializer.hpp:572:   instantiated from ‘void boost::archive::load(Archive&, T&) [with Archive = boost::archive::text_iarchive, T = char [0u]]’
/usr/include/boost/archive/basic_text_iarchive.hpp:64:   instantiated from ‘void boost::archive::basic_text_iarchive<Archive>::load_override(T&, int) [with T = char [0u], Archive = boost::archive::text_iarchive]’
/usr/include/boost/archive/text_iarchive.hpp:64:   instantiated from ‘void boost::archive::text_iarchive_impl<Archive>::load_override(T&, int) [with T = char [0u], Archive = boost::archive::text_iarchive]’
/usr/include/boost/archive/detail/interface_iarchive.hpp:76:   instantiated from ‘Archive& boost::archive::detail::interface_iarchive<Archive>::operator>>(T&) [with T = char [0u], Archive = boost::archive::text_iarchive]’
/usr/include/boost/archive/detail/interface_iarchive.hpp:83:   instantiated from ‘Archive& boost::archive::detail::interface_iarchive<Archive>::operator&(T&) [with T = char [0u], Archive = boost::archive::text_iarchive]’
Container.h:29:   instantiated from ‘void ContainerDataT<T>::serialize(Archive&, unsigned int) [with Archive = boost::archive::text_iarchive, T = char]’
/usr/include/boost/serialization/access.hpp:109:   instantiated from ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = ContainerDataT<char>]’
/usr/include/boost/serialization/serialization.hpp:81:   instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = ContainerDataT<char>]’
/usr/include/boost/serialization/serialization.hpp:140:   instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = ContainerDataT<char>]’
/usr/include/boost/archive/detail/iserializer.hpp:332:   instantiated from ‘boost::archive::detail::pointer_iserializer<T, Archive>::pointer_iserializer() [with T = ContainerDataT<char>, Archive = boost::archive::text_iarchive]’
/usr/include/boost/archive/detail/iserializer.hpp:211:   instantiated from ‘const boost::archive::detail::pointer_iserializer<ContainerDataT<char>, boost::archive::text_iarchive> boost::archive::detail::pointer_iserializer<ContainerDataT<char>, boost::archive::text_iarchive>::instance’
/usr/include/boost/archive/detail/iserializer.hpp:203:   instantiated from ‘static const boost::archive::detail::pointer_iserializer<T, Archive>& boost::archive::detail::pointer_iserializer<T, Archive>::instantiate() [with T = ContainerDataT<char>, Archive = boost::archive::text_iarchive]’
/usr/include/boost/archive/detail/iserializer.hpp:546:   instantiated from ‘const boost::archive::detail::basic_pointer_iserializer& boost::archive::detail::instantiate_pointer_iserializer(Archive*, T*) [with Archive = boost::archive::text_iarchive, T = ContainerDataT<char>]’
/usr/include/boost/archive/detail/interface_iarchive.hpp:57:   instantiated from ‘const boost::archive::detail::basic_pointer_iserializer* boost::archive::detail::interface_iarchive<Archive>::register_type(T*) [with T = ContainerDataT<char>, Archive = boost::archive::text_iarchive]’
/usr/include/boost/archive/detail/iserializer.hpp:449:   instantiated from ‘static const boost::archive::detail::basic_pointer_iserializer* boost::archive::detail::load_pointer_type<Archive, Tptr>::non_abstract<T>::register_type(Archive&) [with T = ContainerDataT<char>, Archive = boost::archive::text_iarchive, Tptr = ContainerDataT<char>*]’
/usr/include/boost/archive/detail/iserializer.hpp:465:   instantiated from ‘static const boost::archive::detail::basic_pointer_iserializer* boost::archive::detail::load_pointer_type<Archive, Tptr>::register_type(Archive&, T&) [with T = ContainerDataT<char>, Archive = boost::archive::text_iarchive, Tptr = ContainerDataT<char>*]’
/usr/include/boost/archive/detail/iserializer.hpp:485:   instantiated from ‘static void boost::archive::detail::load_pointer_type<Archive, Tptr>::invoke(Archive&, Tptr&) [with Archive = boost::archive::text_iarchive, Tptr = ContainerDataT<char>*]’
/usr/include/boost/archive/detail/iserializer.hpp:572:   instantiated from ‘void boost::archive::load(Archive&, T&) [with Archive = boost::archive::text_iarchive, T = ContainerDataT<char>*]’
/usr/include/boost/archive/basic_text_iarchive.hpp:64:   instantiated from ‘void boost::archive::basic_text_iarchive<Archive>::load_override(T&, int) [with T = ContainerDataT<char>*, Archive = boost::archive::text_iarchive]’
/usr/include/boost/archive/text_iarchive.hpp:64:   instantiated from ‘void boost::archive::text_iarchive_impl<Archive>::load_override(T&, int) [with T = ContainerDataT<char>*, Archive = boost::archive::text_iarchive]’
/usr/include/boost/archive/detail/interface_iarchive.hpp:76:   instantiated from ‘Archive& boost::archive::detail::interface_iarchive<Archive>::operator>>(T&) [with T = ContainerDataT<char>*, Archive = boost::archive::text_iarchive]’
/usr/include/boost/archive/detail/interface_iarchive.hpp:83:   instantiated from ‘Archive& boost::archive::detail::interface_iarchive<Archive>::operator&(T&) [with T = ContainerDataT<char>*, Archive = boost::archive::text_iarchive]’
Container.h:52:   instantiated from ‘void ContainerT<T>::serialize(Archive&, unsigned int) [with Archive = boost::archive::text_iarchive, T = char]’
/usr/include/boost/serialization/access.hpp:109:   instantiated from ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = ContainerT<char>]’
/usr/include/boost/serialization/serialization.hpp:81:   instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = ContainerT<char>]’
/usr/include/boost/serialization/serialization.hpp:140:   instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = ContainerT<char>]’
/usr/include/boost/archive/detail/iserializer.hpp:160:   instantiated from ‘void boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::archive::text_iarchive, T = ContainerT<char>]’
Main.cpp:110:   instantiated from here
/usr/include/boost/archive/detail/iserializer.hpp:419: error: invalid application of ‘sizeof’ to incomplete type ‘boost::STATIC_ASSERTION_FAILURE<false>’
/usr/include/boost/serialization/access.hpp: In static member function ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = char [0u]]’:
/usr/include/boost/serialization/serialization.hpp:81:   instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = char [0u]]’
/usr/include/boost/serialization/serialization.hpp:140:   instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_iarchive, T = char [0u]]’
/usr/include/boost/archive/detail/iserializer.hpp:160:   instantiated from ‘void boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::archive::text_iarchive, T = char [0u]]’
Main.cpp:112:   instantiated from here
/usr/include/boost/serialization/access.hpp:109: error: request for member ‘serialize’ in ‘t’, which is of non-class type ‘char [0u]’
/usr/include/boost/serialization/access.hpp: In static member function ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = char [0u]]’:
/usr/include/boost/serialization/serialization.hpp:81:   instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = char [0u]]’
/usr/include/boost/serialization/serialization.hpp:140:   instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = char [0u]]’
/usr/include/boost/archive/detail/oserializer.hpp:148:   instantiated from ‘void boost::archive::detail::oserializer<Archive, T>::save_object_data(boost::archive::detail::basic_oarchive&, const void*) const [with Archive = boost::archive::text_oarchive, T = char [0u]]’
Main.cpp:112:   instantiated from here
/usr/include/boost/serialization/access.hpp:109: error: request for member ‘serialize’ in ‘t’, which is of non-class type ‘char [0u]’


推荐答案

首先


  • ContainerDataT<> 无法兑现三级规则

  • ContainerT<> 荣誉规则三

  • 在C ++中有 malloc / 免费只需使用更安全的 new / delete （或者更好的一个智能指针来管理所有权语义和生命周期异常安全方式）。

  • 作为成员的T [] 等效于 T * 。

  • ContainerDataT<> fails to honour Rule Of Three
  • ContainerT<> fails to honour Rule Of Three
  • There is for malloc/free in C++. Just use the safer new/delete (or better yet, a smart pointer to manage the ownership semantics and lifetimes in an exception safe way).
  • T[] as a member is equivalent to T*.

我建议使用标准类型来管理所有权语义（unique_ptr），或者更好地使用标准库尺寸动态分配的数组（提示：它的std :: vector）。如果您坚持使用动态分配的数组成员，诚实地向您的序列化功能： Live on Coliru

I'd suggest using standard types to govern the ownership semantics (unique_ptr), or better yet, just use standard library for variable-size dynamically allocated arrays (hint: it's std::vector). If you insist on using dynamically allocated array members, be honest about it to your Serialization function: Live On Coliru

template<typename T>
class ContainerDataT : boost::noncopyable {
public:
    ContainerDataT() : p_Data(new T[10]) { }
    ~ContainerDataT() { delete[] p_Data; }

    T*  GetData(){return p_Data;};

private:
    friend class ContainerT<T>;

    T* p_Data;

    friend class boost::serialization::access;
    template<class Archive>
    void serialize(Archive &ar, const unsigned int file_version) {
        ar & boost::serialization::make_array(p_Data, 10);
    }
};

因此，您可以使用 boost :: serialization :: make_array

So, you can use boost::serialization::make_array to tell Boost Serialization about your intentions.

这里是一个简单的演示程序演示的事情（使用固定大小分配 T * p_Data ）。注意，我只是在 ContainerT<> 中创建了 p_Data 成员对象，因为它似乎没有增益动态实例化。

Here's a simple demo program that demonstrates things (using a fixed size allocated T* p_Data). Note that I simply made p_Data a member object inside ContainerT<> because it seems there is no gain in having double dynamic instantiation.

#ifndef CONTAINER_H_
#define CONTAINER_H_

#include <boost/noncopyable.hpp>
#include <boost/serialization/access.hpp>
#include <boost/serialization/array.hpp>

template<typename T>
class ContainerT;

    template<typename T>
    class ContainerDataT : boost::noncopyable {
    public:
        ContainerDataT() : p_Data(new T[10]) { 
            std::copy_n("0123456789", 10, p_Data);
        }
        ~ContainerDataT() { delete[] p_Data; }

        T*  GetData(){return p_Data;};

    private:
        friend class ContainerT<T>;

        T* p_Data;

        friend class boost::serialization::access;
        template<class Archive>
        void serialize(Archive &ar, const unsigned int file_version) {
            ar & boost::serialization::make_array(p_Data, 10);
        }
    };

template<typename T>
class ContainerT {
public:
    const T* GetMString() const { return p_Data.GetData(); }

private:
    ContainerDataT<T> p_Data;

    friend class boost::serialization::access;
    template<class Archive>
    void serialize(Archive &ar, const unsigned int file_version) {
        ar & p_Data;
    }
};

typedef ContainerT<char> MString;

#endif /* CONTAINER_H_ */

#ifndef PERSON_H_
#define PERSON_H_

#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include <boost/serialization/string.hpp>
#include <string>

//#include "Container.h"
class Person
{
public:
     Person() = default;
    ~Person() = default;

private:    
    std::string z_Name;
    int         i_Age;
    MString     z_CountryCode;

    //Serailization
    //Allow serialization to access non-public data members.
    friend class boost::serialization::access;

    template <typename Archive> 
    void serialize(Archive &ar, const unsigned int version) 
    { 
        ar & z_Name; 
        ar & i_Age; 
        ar & z_CountryCode; 
    }   
};

#endif /* PERSON_H_ */

int main()
{
    boost::archive::text_oarchive oa(std::cout);

    Person p;
    oa << p;
}

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