Using Protobuf in Golang

1. Download Protoc

• can go to https://github.com/google/protobuf/releases download the source code to compile their own
• or https://github.com/google/protobuf/releases to download a compiled binary file

2. Installing Protoc-gen-go

go get github.com/golang/protobuf/protoc-gen-go

After installation, you will find Protoc-gen-go.exe under $gopath/bin.

3. Generate protocol code using Protoc.exe and Protoc-gen-go.exe

protoc --proto_path=./proto  --go_out=./src_gen/go/    scoreserver/score_info.proto

Note that when used, Protoc.exe and Protoc-gen-go.exe are placed in the same directory, or both paths are placed in the environment variable path

4. Installing the PROTOBUF Library

go get github.com/golang/protobuf/proto

5. Test code

• Proto
  Score_info.proto

syntax = "proto2";package score_server;/**  * @brief base_score_info */message base_score_info_t{    optional    int32       win_count = 1;                  // 玩家胜局局数    optional    int32       lose_count = 2;                 // 玩家负局局数    optional    int32       exception_count = 3;            // 玩家异常局局数    optional    int32       kill_count = 4;                 // 总人头数    optional    int32       death_count = 5;                // 总死亡数    optional    int32       assist_count = 6;               // 总总助攻数    optional    int64       rating = 7;                     // 评价积分}

• Test code

Pb_test Project Main.gopackage mainimport ("FMT" "Proto/scoreserver" "Github.com/golang/protobuf/proto") func Main () {score_info: = &score_server. basescoreinfot{} score_info. Wincount = New (Int32) *score_info. Wincount = 1 Score_info. Losecount = New (Int32) *score_info. Losecount = 2 Score_info. Exceptioncount = New (Int32) *score_info. Exceptioncount = 3 Score_info. Killcount = New (Int32) *score_info. Killcount = 4 Score_info. Deathcount = New (Int32) *score_info. Deathcount = 5 Score_info. Assistcount = New (Int32) *score_info. Assistcount = 6 Score_info. Rating = new (Int64) *score_info. Rating = 1800 FMT. Printf ("Original data{%s}\n", Score_info. String ())//Encode data, err: = Proto. Marshal (score_info) if err! = Nil {fmt. Printf ("Proto encode error[%s]\n", err. Error ()) return}//decode score_info_1: = &score_server. basescoreinfot{} err = Proto.    Unmarshal (data, score_info_1) if err! = Nil {    Fmt. Printf ("Proto decode error[%s]\n", err. Error ()) return} *score_info_1.rating = Fmt. Printf ("After Decode:{%s}\n", Score_info_1.string ())}

Code Run Result:

original data{win_count:1 lose_count:2 exception_count:3 kill_count:4 death_count:5 assist_count:6 rating:1800 }after decode:{win_count:1 lose_count:2 exception_count:3 kill_count:4 death_count:5 assist_count:6 rating:2000 }