c++怎么使用protobuf进行数据序列化_c++结合protobuf进行结构化数据传输

syntax = "proto3";

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

protoc --cpp_out=. person.proto

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

int main() {
  // 设置测试数据
  Person person;
  person.set_name("zhangsan");
  person.set_age(25);
  person.set_email("zhangsan@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

find_package(Protobuf REQUIRED)
target_link_libraries(your_target ${Protobuf_LIBRARIES})