摘要：
一个常见的操作是将本地数据块转换为字符流并将其发送到远程端。远程端将字符串流恢复到数据库。如果有以下CObject类的示例。编写两个函数，将CObject中的成员变量转换为字符流。
在网络编程中。一个常常的操作是将本地的数据块转换成字符流并将其发送到远端。远端将这个字符串流恢复成数据库。如果有例如以下一个类CObject。编写两个函数，分别将CObject中的成员变量转换为一个字符流（convert2Stream()函数）。并将字符流的数据又一次恢复到一个CObject对象中（convert2Object()函数）：
char* convert2Stream(const CObject* vObject);
CObject* convert2Object(const char* vStream);
class CObject { private: int m_NumSample; std::vector<int> m_Data; bool m_IsDirty; } |
#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <boost/assign/list_of.hpp>
#include <boost/archive/text_iarchive.hpp>
#include <boost/archive/text_oarchive.hpp>
#include <boost/serialization/access.hpp>
#include <boost/serialization/vector.hpp>
class CObject
{
public:
CObject() {}
~CObject() {}
void printMember() const
{
std::cout << "Number " << m_NumSample << "
";
std::cout << "vector: ";
for (int i=0; i<m_Data.size(); ++i)
{
std::cout << m_Data[i] << " ";
}std::cout << std::endl;
std::cout << "bool " << m_IsDirty << std::endl;
}
void setValue(int vNumber, const std::vector<int>& vData, bool vB)
{
m_NumSample = vNumber;
m_Data = vData;
m_IsDirty = vB;
}
private:
friend boost::serialization::access;
template<typename Archive>
void serialize(Archive& ar, const unsigned int)
{
ar & m_NumSample;
ar & m_Data;
ar & m_IsDirty;
}
private:
int m_NumSample;
std::vector<int> m_Data;
bool m_IsDirty;
};
//*********************************************************************************
//FUNCTION:
char* convert2Stream(const CObject* vObject)
{
//没有推断vObject的合法性
std::ostringstream OutStream;
boost::archive::text_oarchive OArchive(OutStream);
OArchive << vObject;
std::string TempString = OutStream.str();
char *pBuffer = new char[TempString.size()+1];
memcpy(pBuffer, TempString.c_str(), TempString.size());
pBuffer[TempString.size()] = '