https://github.com/google/protobuf/blob/master/src/README.md
https://studygolang.com/articles/7394
$ git clone https://github.com/google/protobuf.git
$ cd protobuf
$ git submodule update --init --recursive
$ ./autogen.sh
$ ./configure
$ make
$ make check
$ sudo make install
$ sudo ldconfig # refresh shared library cache.
go get github.com/golang/protobuf
go get github.com/golang/protobuf/protoc-gen-go
cat test.proto
syntax="proto2";
package example;
enum FOO { X = 17; };
message Test {
required string label = 1;
optional int32 type = 2 [default=77];
repeated int64 reps = 3;
optional group OptionalGroup = 4 {
required string RequiredField = 5;
}
}
protoc --go_out=. test.proto
#產生的文件放到$GOPATH中便于引用,這里扔到my.protobuf.test/example
cat test.go
package main
import (
"fmt"
"log"
// 輔助庫
"github.com/golang/protobuf/proto"
// test.pb.go 的路徑
"my.protobuf.test/example"
)
func main() {
// 創(chuàng)建一個消息 Test
test := &example.Test{
// 使用輔助函數設置域的值
Label: proto.String("hello"),
Type: proto.Int32(17),
Optionalgroup: &example.Test_OptionalGroup{
RequiredField: proto.String("good bye"),
},
}
fmt.Printf("Label:%s Type:%d\n", test.GetLabel(), test.GetType())
*(test.Label) = "hello go"
*(test.Type) = 18
// 進行編碼
data, err := proto.Marshal(test)
if err != nil {
log.Fatal("marshaling error: ", err)
}
fmt.Printf("Binary Len:%d\n", len(data))
// 進行解碼
newTest := &example.Test{}
err = proto.Unmarshal(data, newTest)
if err != nil {
log.Fatal("unmarshaling error: ", err)
}
fmt.Printf("Label:%s Type:%d\n", test.GetLabel(), test.GetType())
// 測試結果
if test.GetLabel() != newTest.GetLabel() {
log.Fatalf("data mismatch %q != %q", test.GetLabel(), newTest.GetLabel())
}
}
