这是代表我的问题的示例。除非finalTime大于25,否则映射将完全序列化。使用boost单元测试,我得到了std :: exception输入流错误。此外,此代码使用polymorphic_text_archives工作正常。在地图中阅读时会发生错误。
#include <fstream>
#include <iostream>
#define BOOST_ALL_DYN_LINK
#define BOOST_PARAMETER_MAX_ARITY 8
#include <boost/serialization/export.hpp>
#include <boost/archive/polymorphic_iarchive.hpp>
#include <boost/archive/polymorphic_oarchive.hpp>
#include <boost/archive/polymorphic_binary_iarchive.hpp>
#include <boost/archive/polymorphic_binary_oarchive.hpp>
#include <boost/static_assert.hpp>
#include <boost/serialization/map.hpp>
using namespace boost;
class DoubleTest
{
public:
DoubleTest(double d)
{
this->Double = d;
}
DoubleTest()
{
this->Double = 0;
}
void serialize(boost::archive::polymorphic_iarchive & ar, const unsigned int)
{
ar & this->Double;
}
void serialize(boost::archive::polymorphic_oarchive & ar, const unsigned int)
{
ar & this->Double;
}
double Double;
};
int main(int argc, char** argv)
{
const std::string fileName = "test.out";
std::map<float, DoubleTest*> mymap;
const int initialValue = 0;
const int initialTime = 0;
// A "finalTime" of 25 works. "26" does not.
const int finalTime = 26;
int value = 10;
// Put values into the map.
for(int time = initialTime; time < finalTime; time += 1)
{
value++;
mymap[time] = new DoubleTest(value);
}
// Write a binary archive out.
std::ofstream ofs(fileName.c_str());
boost::archive::polymorphic_binary_oarchive oa(ofs);
oa << mymap;
ofs.flush();
ofs.close();
// Create a new map to read the binary archive into.
std::map<float, DoubleTest*> mymap2;
// Read in the new binary archive.
std::ifstream ifs(fileName.c_str());
boost::archive::polymorphic_binary_iarchive ia(ifs);
ia >> mymap2;
ifs.close();
// Loop through the values to make sure they are correct.
std::map<float, DoubleTest*>::iterator it;
for(it = mymap2.begin(); it != mymap2.end(); ++it)
{
std::cout << "Key: " << it->first << " ";
std::cout << "Value: " << it->second->Double << '\n';
}
int pause;
std::cin >> pause;
}
答案 0 :(得分:4)
您需要序列化为二进制文件流。将ios_base :: binary添加到流构造函数。