ubuntu安装protobuf

下载

wget https://github.com/protocolbuffers/protobuf/releases/download/v3.19.4/protobuf-all-3.19.4.tar.gz

安装

tar zxvf protobuf-all-3.19.4.tar.gz		//解压
cd protobuf-3.19.4/						//进入解压目录
//检查并安装以下环境，本次使用centos7环境，Ubuntu使用apt-get安装。
sudo apt install autoconf 
sudo apt install automake 
sudo apt install libtool
//以上安装成功后执行下面
./autogen.sh
//生成编译配置文件成功,运行配置脚本
./configure
make  				//要编译很久
make check    		//测试
make install    	//安装

sudo ldconfig        //刷新动态库权限，否则即使安装成功系统也无法识别

测试

查看protoc版本

protoc --version    //查看版本

代码测试

首先编写proto文件

syntax = "proto3";
package IM;
message Account {
    //账号
    uint64 ID = 1;
    //名字
    string name = 2;
    //密码
    string password = 3;
}
 
message User {
    Account user = 1;
}

生成代码

protoc --cpp_out=./ myAccount.proto

#include <iostream>
#include <fstream>
#include "myAccount.pb.h"
 
using namespace std;
 
int main(int argc, char** argv)
{
    IM::Account account1;
    account1.set_id(1);
    account1.set_name("ysl");
    account1.set_password("123456");
 
    string serializeToStr;
    account1.SerializeToString(&serializeToStr);
    cout <<"序列化后的字节："<< serializeToStr << endl;
 
 
    IM::Account account2;
    if(!account2.ParseFromString(serializeToStr))
    {
        cerr << "failed to parse student." << endl;
        return -1;
    }
    cout << "反序列化：" << endl;
    cout << account2.id() << endl;
    cout << account2.name() << endl;
    cout << account2.password() << endl;
 
    google::protobuf::ShutdownProtobufLibrary();
 
    return 0;
}

编译运行

g++ main.cpp myAccount.pb.cc myAccount.pb.h -o main -lprotobuf -std=c++11 -lpthread -Bstatic