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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                [TOC] > [home protocol-buffers](https://developers.google.com/protocol-buffers) ## 簡述 1. 一種數據交換格式 2. 相對字符傳遞可節省一半左右流量 ``` message Person { string name = 1; int32 id = 2; repeated string email = 3; } ``` 相當于把 `name `等 `key` 換為數字進行傳輸 3. 他既可以用作client/server 之間的數據交互,也可以用作 rpc 即可 grpc 4. protobuf 會有粘包問題,解決辦法是在轉為字節后,再添加到字節頭部 ``` // 一個 golang 的例子 func main() { msg := &protogo.Msg{To: "hello", From: "word"} // 序列化為 bytes byt, _ := proto.Marshal(msg) //把字節長度轉為字節放入頭部 b :=IntToBytes(len(byt)) byt =append(b,byt...) log.Printf("len %v , content %v",len(a),a) // len 19 , content [0 17 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1] } func IntToBytes(n int) []byte { x := uint16(n)//定義包頭長度為 2 個字節 bytesBuffer := bytes.NewBuffer([]byte{}) binary.Write(bytesBuffer, binary.BigEndian, x) return bytesBuffer.Bytes() } ```
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