C++中二进制数据序列化和反序列化详解

void* my_memcpy(void* dest, const void* src, size_t count)
{
	assert(dest);  //防止函数接受空指针进行操作
	assert(src);
 
	void* ret = dest;
	while (count--)
	{
		*(char*)dest = *(char*)src;
		dest = (char*)dest + 1;
		src = (char*)src + 1;
	}
	return ret;
}

struct Student
{
	string name;
	string grade;
	int age;
	double scale;
};
//数据序列化
char* serialization(Student* student)
{
	int size = sizeof(Student);
	char* pBuf = new char[size];
 
	//记录指针的位置
	int num = 0;
 
	memcpy((pBuf + num), student->name.c_str(), 8);
	num += 8;
 
	memcpy((pBuf + num), student->grade.c_str(), 8);
	num += 8;
 
	*(int *)(pBuf + num) = student->age;
	num += 4;
 
	*(double*)(pBuf + num) = student->scale;
 
	return pBuf;
}

void deserialization(char* data)
{
	string name;
	string garde;
	int age;
	double scale;
 
	//记录指针的位置
	int num = 0; 
 
	name = (data + num);
	num += 8;
 
	garde = (data + num);
	num += 8;
 
	age = *(int*)(data + num);
	num += 4;
 
	scale = *(double*)(data + num);
 
	cout << "name:" << name << endl;
	cout << "garde:" << garde << endl;
	cout << "age:" << age << endl;
	cout << "scale:" << scale << endl;
}

int main()
{
	Student student;
	student.name = "Jim";
	student.grade = "ten";
	student.age = 12;
	student.scale = 88;
 
	char* data = serialization(&student);
 
	deserialization(data);
 
	return 0;
}