golang中使用protobuf

1. 下載protoc

• 可以去https://github.com/google/protobuf/releases下載源碼自己編譯
• 或者https://github.com/google/protobuf/releases去下載編譯好的二進位檔案

2. 安裝protoc-gen-go

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

安裝好了之後, 在$GOPATH/bin下面會找到protoc-gen-go.exe

3. 使用protoc.exe 和 protoc-gen-go.exe 產生協議代碼

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

注意使用的時候, protoc.exe和protoc-gen-go.exe要放在同一個目錄下，或者二者的路徑都放入環境變數PATH裡面

4. 安裝protobuf庫

go get github.com/golang/protobuf/proto

5. 測試代碼

• proto
  score_info.proto

syntax = "proto2";package score_server;/**  * @brief base_score_info */message base_score_info_t{    optional    int32       win_count = 1;                  // 玩家勝局局數    optional    int32       lose_count = 2;                 // 玩家負局局數    optional    int32       exception_count = 3;            // 玩家異常局局數    optional    int32       kill_count = 4;                 // 總人頭數    optional    int32       death_count = 5;                // 總死亡數    optional    int32       assist_count = 6;               // 總總助攻數    optional    int64       rating = 7;                     // 評價積分}

• 測試代碼

// 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 = 2000    fmt.Printf("after decode:{%s}\n", score_info_1.String())}

代碼運行結果:

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 }