> BOOST_SERIALIZATION_NVP(outObj); 反序列化时遇到了以下错误; 代码中是-6ren">
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c++ - 使用 boost 反序列化二进制数据时 static_assert 失败 "typex::value"失败

转载 作者:太空狗 更新时间:2023-10-29 20:53:20 28 4
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下面的代码对类和结构的成员进行序列化和反序列化。序列化工作正常,但我在尝试使用 oarch >> BOOST_SERIALIZATION_NVP(outObj); 反序列化时遇到了以下错误;
代码中是否存在我尚未实现和未实现的重大错误。

In file included from main.cpp:1: In file included from /usr/local/include/boost/archive/binary_oarchive.hpp:21: In file included from /usr/local/include/boost/archive/binary_oarchive_impl.hpp:22: In file included from /usr/local/include/boost/archive/basic_binary_oarchive.hpp:33: In file included from /usr/local/include/boost/archive/detail/common_oarchive.hpp:22: In file included from /usr/local/include/boost/archive/detail/interface_oarchive.hpp:23: In file included from /usr/local/include/boost/archive/detail/oserializer.hpp:68: /usr/local/include/boost/archive/detail/check.hpp:162:5: error: static_assert failed "typex::value" BOOST_STATIC_ASSERT(typex::value); ^ ~~~~~~~~~~~~ /usr/local/include/boost/static_assert.hpp:70:41: note: expanded from macro 'BOOST_STATIC_ASSERT'

#include <boost/archive/binary_oarchive.hpp>
#include <boost/archive/xml_oarchive.hpp>
#include <boost/archive/binary_iarchive.hpp>
#include <boost/serialization/binary_object.hpp>
#include <boost/serialization/serialization.hpp>
#include <boost/serialization/nvp.hpp>
#include <iostream>
#include <string>
#include <iomanip>
#include <sstream>
#include <fstream>

#include <map>
#include <boost/serialization/map.hpp>
#include <boost/serialization/split_member.hpp>

struct values
{
std::string name;
std::string sex;
values():name("dummy"),sex("dummy"){} ;

template<class Archive>
void serialize(Archive & ar, const unsigned int version)
{
ar & BOOST_SERIALIZATION_NVP(name);
ar & BOOST_SERIALIZATION_NVP(sex);
}
};

class Myclass
{
public:

Myclass()
{
values val1;
e_group.insert( std::make_pair(1,val1) ) ;
e_group.insert( std::make_pair(2,val1) ) ;
p_group.insert( std::make_pair(1,e_group) ) ;
p_group.insert( std::make_pair(2,e_group) ) ;
}

template<class Archive>
void serialize(Archive & ar, const unsigned int version) const
{
ar & BOOST_SERIALIZATION_NVP(e_group);
ar & BOOST_SERIALIZATION_NVP(p_group);
}

typedef std::map<int,values> groups;
typedef std::map<int,groups> Pgroups;
groups e_group;
Pgroups p_group;
};



int main()
{
Myclass assetlist;

auto os = std::ostringstream(std::ios::binary);

boost::archive::binary_oarchive arch( os, boost::archive::no_header);

arch << BOOST_SERIALIZATION_NVP(assetlist);

std::string s1 = os.str();

std::stringstream is( s1, std::ios_base::binary| std::ios_base::out| std::ios_base::in);

Myclass outObj;

boost::archive::binary_iarchive iarch (is , boost::archive::no_header );

iarch >> BOOST_SERIALIZATION_NVP(outObj);

return 0;
}

最佳答案

由于 Myclass::serialize 函数中的额外“const”,您的静态断言失败。它应该看起来像:

template<class Archive>
void serialize(Archive & ar, const unsigned int version)
{ ... }

关于 BOOST_SERIALIZATION_NVP() 用法请参阅 this问题。

关于c++ - 使用 boost 反序列化二进制数据时 static_assert 失败 "typex::value"失败,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43090624/

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