syntax = "proto2";
package message;
message Orders {
required int32 order_id=1;
required string title=2;
}

mkdir $GOPATH/src/message;protoc --go_out $GOPATH/src/message orders.proto 

package main

import "message"

import "github.com/golang/protobuf/proto"

import "fmt"

func main() {
    orders := &message.Orders{
        OrderId: proto.Int32(1),
        Title:   proto.String("第一个订单"),
    }
    //序列化成二进制数据
    ordersBytes, _ := proto.Marshal(orders)
    //反序列化二进制数据
    twoOrders := &message.Orders{}
    proto.Unmarshal(ordersBytes, twoOrders)
    fmt.Println(twoOrders.GetTitle())
    fmt.Println(twoOrders.GetOrderId())

}