c++怎么使用protobuf_c++ Protobuf使用方法

syntax = "proto3";
<p>message Person {
string name = 1;
int32 age = 2;
string email = 3;
}

protoc --cpp_out=. person.proto

#include <iostream>
#include <fstream>
#include "person.pb.h"
<p>int main() {
// 设置调试日志（可选）
GOOGLE_PROTOBUF_VERIFY_VERSION;</p><p>// 创建一个Person对象
Person person;
person.set_name("Alice");
person.set_age(30);
person.set_email("alice@example.com");</p><p>// 序列化到文件
std::ofstream output("person.data", std::ios::binary);
if (!person.SerializeToOstream(&output)) {
std::cerr << "Failed to write person data." << std::endl;
return -1;
}
output.close();</p><p>// 从文件反序列化
Person person2;
std::ifstream input("person.data", std::ios::binary);
if (!person2.ParseFromIstream(&input)) {
std::cerr << "Failed to read person data." << std::endl;
return -1;
}
input.close();</p><p>// 打印结果
std::cout << "Name: " << person2.name() << std::endl;
std::cout << "Age: " << person2.age() << std::endl;
std::cout << "Email: " << person2.email() << std::endl;</p><p>// 清理全局资源（可选）
google::protobuf::ShutdownProtobufLibrary();
return 0;
}

g++ -std=c++11 main.cpp person.pb.cc -lprotobuf -o demo

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