c++怎么使用Protobuf进行数据序列化_C++中利用Protobuf实现高效数据序列化方法

syntax = "proto3";

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

protoc --cpp_out=. person.proto

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

int main() {
    // 创建一个Person对象
    Person person;
    person.set_name("Alice");
    person.set_age(30);
    person.set_email("alice@example.com");

    // 序列化到文件
    std::ofstream output("person.bin", std::ios::binary);
    if (!person.SerializeToOstream(&output)) {
        std::cerr << "序列化失败！" << std::endl;
        return -1;
    }
    output.close();

    // 从文件反序列化
    Person person2;
    std::ifstream input("person.bin", std::ios::binary);
    if (!person2.ParseFromIstream(&input)) {
        std::cerr << "反序列化失败！" << std::endl;
        return -1;
    }
    input.close();

    // 输出结果验证
    std::cout << "Name: " << person2.name() << std::endl;
    std::cout << "Age: " << person2.age() << std::endl;
    std::cout << "Email: " << person2.email() << std::endl;

    return 0;
}

g++ main.cpp person.pb.cc -lprotobuf -o demo

sudo apt-get install libprotobuf-dev protobuf-compiler