在下面的代码中，我尝试将两个对象写入一个没有扩展名的文件。问题最初出现在写入阶段，因为实际上没有任何内容写入文件。然后是第二部分；阅读阶段，当使用以下行打开文件时会导致异常：
boost::archive::text_iarchive ia(ifs);
我从 boost 示例 1 中获取了这个。我还尝试在此页面Boost Serialization multiple objects上遵循此问题的第三个答案
#include <fstream>
// include headers that implement a archive in simple text format
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
/////////////////////////////////////////////////////////////
// gps coordinate
//
// illustrates serialization for a simple type
//
class gps_position
{
private:
friend class boost::serialization::access;
// When the class Archive corresponds to an output archive, the
// & operator is defined similar to <<. Likewise, when the class Archive
// is a type of input archive the & operator is defined similar to >>.
template<class Archive>
void serialize(Archive & ar, const unsigned int version)
{
ar & degrees;
ar & minutes;
ar & seconds;
}
int degrees;
int minutes;
float seconds;
public:
gps_position(){};
gps_position(int d, int m, float s) :
degrees(d), minutes(m), seconds(s)
{}
};
int main()
{
// create and open a character archive for output
std::ofstream ofs("filename",std::ios::app);
// create class instance
gps_position g0(35, 59, 24.567f);
gps_position g1(35, 59, 88.567f);
// save data to archive
//{
boost::archive::text_oarchive oa(ofs);
// write class instance to archive
size_t number_of_objects = 2;
oa << number_of_objects;
oa << g0;
oa << g1;
// archive and stream closed when destructors are called
// }
// ... some time later restore the class instance to its orginal state
gps_position newg0;
gps_position newg1;
// {
// create and open an archive for input
std::ifstream ifs("filename");
boost::archive::text_iarchive ia(ifs);
// read class state from archive
ia >> number_of_objects;
ia >> newg0;
ia >> newg1;
// archive and stream closed when destructors are called
//}
return 0;
}