谷歌 Google ProtoBuf用法实例

川长思鸟来 2022-05-31 04:38 342阅读 0赞

这里贴一个介绍贴[http://blog.csdn.net/hailong0715/article/details/52016682][http_blog.csdn.net_hailong0715_article_details_52016682]

这里就介绍怎么安装的了，安装caffe的时候一起安装的，这里介绍一下怎么用这个库，caffe用他来当数据传输说明他很快

新建一个proto定义数据传输的结构，这个和ros上数据传输很像

syntax = "proto2";
    package caffe; //域名
    message Person {  
      required string name = 1;  
      required int32 age = 2;  
      optional string email = 3;  
    
      enum PhoneType {  
        MOBILE = 0;  
        HOME = 1;  
        WORK = 2;  
      }  
      
      message PhoneNumber {  
        required string number = 1;  
        optional PhoneType type = 2 [default = HOME];  
      }  
      
      optional PhoneNumber phone = 4; 
      
    }

package 指的是域名，就是std一样

write.cpp

#include <iostream>  
    #include <fstream>  
    #include "caffe.pb.h"  
      
    using namespace std;  
    using namespace caffe;  
      
    int main()  
    {  
        Person person;  
      
        person.set_name("flamingo");     
        person.set_age(18);   
        person.set_email("majianfei1023@gmail.com");  
        person.mutable_phone()->set_number("135525");
        
        // Write  
        fstream output("./log", ios::out | ios::trunc | ios::binary);  
      
        if (!person.SerializeToOstream(&output)) {  
            cerr << "Failed to write msg." << endl;  
            return -1;  
        }  
      
        //system("pause");  
        return 0;  
    }

上面的修改其实我是看他生产的caffe.pb.h里面定义的函数，发现有这些函数可以直接用的

read.cpp

#include <iostream>  
    #include <fstream>  
    #include "caffe.pb.h"  
      
    
    using namespace std;  
    using namespace caffe;  
      
    void PrintInfo(const Person & person) {   
        cout << person.name() << endl;   
        cout << person.age() << endl;   
        cout << person.email() << endl;  
        cout << person.phone().number() << endl; 
        cout << person.phone().type() << endl; 
    
    }   
      
    int main()  
    {  
        Person person;    
      
        fstream input("./log", ios::in | ios::binary);  
          
        if (!person.ParseFromIstream(&input)) {  
            cerr << "Failed to parse address book." << endl;  
            return -1;  
        }  
      
        PrintInfo(person);  
    
        return 0;  
    }

然后编译，加入库就好了

protoc --cpp_out=./ caffe.proto   #在当前目录生成.h和.cc
    g++ write.cpp caffe.pb.cc -o write -lprotobuf
    g++ read.cpp caffe.pb.cc -o read -lprotobuf

本文摘自： [http://blog.csdn.net/cai13160674275/article/details/71214552][http_blog.csdn.net_cai13160674275_article_details_71214552]

[http_blog.csdn.net_hailong0715_article_details_52016682]: http://blog.csdn.net/hailong0715/article/details/52016682
[http_blog.csdn.net_cai13160674275_article_details_71214552]: http://blog.csdn.net/cai13160674275/article/details/71214552