protobuf系列教程

protobuf 误装了其他版本之后，我之前的3.6.1,就找不到了，现在按照源码安装的方式，进行安装，成功

1.卸载

　　sudo apt-get remove libprotobuf-dev

　　which protoc

然后删除路径即可

2.安装

sudo apt-get install autoconf automake libtool curl make g++ unzip

git clone -b v3.6.1 https://github.com/protocolbuffers/protobuf.git

cd protobuf

git submodule update --init --recursive

./autogen.sh

./configure

make

make check

sudo make install

sudo ldconfig

protoc --version 输出版本号成功

例子

person.proto
syntax = "proto3";

package tutorial;

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

message PersonList {
        repeated Person persons = 1;
}

protoc --cpp_out=./ person.proto

test.cpp

#include <iostream>
#include <string>
#include <sstream>
#include <map>

#include "person.pb.h"


// set the person's info
void SetPersonInfo(const tutorial::Person& infoPerson, tutorial::Person* pPerson)
{
    pPerson->set_id(infoPerson.id());
    pPerson->set_name(infoPerson.name());
    pPerson->set_email(infoPerson.email());
}

// print the persons
void ListAllPerson(const tutorial::PersonList& listPerson)
{
    for (int i = 0; i < listPerson.persons_size(); i++) {
        const tutorial::Person& person = listPerson.persons(i);
        std::cout << "ID: " << person.id() << std::endl;
        std::cout << "name: " << person.name() << std::endl;
        std::cout << "e-mail: " << person.email() << std::endl;
        std::cout << "----------------------------------------\n";
    }
}

int main(int argc, char* argv[])
{
    GOOGLE_PROTOBUF_VERIFY_VERSION;

    tutorial::Person person;
    person.set_id(666);
    person.set_name("Mark");
    person.set_email("mark@example.com");

    // serialize to io-stream
    std::stringstream ss;
    person.SerializeToOstream(&ss);
    std::string strData = ss.str();
    std::cout << "Data:" << strData << "\n";
    // deserialize from io-stream
    if (!person.ParseFromIstream(&ss)) {
        std::cerr << "Failed to parse person.pb." << std::endl;
        return -1;
    }
    std::cout << "ID: " << person.id() << std::endl;
    std::cout << "name: " << person.name() << std::endl;
    std::cout << "e-mail: " << person.email() << std::endl;

    // list data
    tutorial::PersonList listPerson;
    SetPersonInfo(person, listPerson.add_persons());

    tutorial::Person person1;
    person1.set_id(8468);
    person1.set_name("Test");
    person1.set_email("test@example.com");
    SetPersonInfo(person1, listPerson.add_persons());

    // serialize to io-stream
    std::stringstream ssList;
    listPerson.SerializeToOstream(&ssList);
    std::cout << "List:" << ssList.str() << "\n";
    std::cout << "--------------------Deserialize------------------\n";
    tutorial::PersonList listDeserialize;
    listDeserialize.ParseFromIstream(&ssList);
    ListAllPerson(listDeserialize);

    std::cout << "\nFinished\n";
    getchar();
    return 0;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8.3)
project(protobuf_tutorial)
set(CMAKE_CXX_FLAGS "-std=c++11  ${CMAKE_CXX_FLAGS}")

find_package(Protobuf REQUIRED)
include_directories(
  include
  ${PROTOBUF_INCLUDE_DIRS}
)
add_library(person_protobuf person.pb.cc)
add_executable(test test.cpp)
target_link_libraries(
    test
    person_protobuf
    ${PROTOBUF_LIBRARIES}
)

原文链接: https://www.cnblogs.com/gary-guo/p/12430403.html

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