c++序列化

syntax = "proto3";

message Person {
  string name = 1;
  int32 age = 2;
  string email = 3;
}

protoc --cpp_out=. person.proto

#include "person.pb.h"
#include <iostream>
#include <fstream>

void serializePerson(const Person& person, const std::string& filename) {
  std::ofstream output(filename, std::ios::binary);
  person.SerializeToOstream(&output);
}

bool deserializePerson(Person& person, const std::string& filename) {
  std::ifstream input(filename, std::ios::binary);
  return person.ParseFromIstream(&input);
}

int main() {
  Person person;
  person.set_name("Alice");
  person.set_age(30);
  person.set_email("alice@example.com");

  serializePerson(person, "person.bin");

  Person loadedPerson;
  if (deserializePerson(loadedPerson, "person.bin")) {
    std::cout << "Name: " << loadedPerson.name() << "\n";
    std::cout << "Age: " << loadedPerson.age() << "\n";
    std::cout << "Email: " << loadedPerson.email() << "\n";
  } else {
    std::cerr << "Failed to deserialize person.\n";
  }

  return 0;
}