protobuf

syntax = "proto3";
option go_package = "./;helloworld"; // helloworld is the package name
message HelloRequest {
  string name = 1; // 1是编号不是值
  int32 age = 2;
  repeated string courses = 3;
}

// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
//     protoc-gen-go v1.26.0
//     protoc        v3.14.0
// source: helloworld.proto

package helloworld

package main

import (
    helloworld "GoProjects/helloworld/proto"
    "encoding/json"
    "fmt"
    "github.com/golang/protobuf/proto"
)

type Hello struct {
    Name    string   `json:"name"`
    Age     int32    `json:"age"`
    Courses []string `json:"courses"`
}

func main() {
    // compare the compression rate of proto with json
    req := helloworld.HelloRequest{Name: "bobby", Age: 12, Courses: []string{"miminan", "sss", "qqq"}}
    rsp, _ := proto.Marshal(&req)
    fmt.Println(len(rsp)) 
    // test unmarshal
    newReq := helloworld.HelloRequest{}
    _ = proto.Unmarshal(rsp, &newReq)
    fmt.Println(newReq.Name)
    // json
    JsonStruct := Hello{Name: "zhuzhu", Age: 12, Courses: []string{"miminan", "sss", "qqq"}}
    JsonRsp, _ := json.Marshal(JsonStruct)
    fmt.Println(len(JsonRsp))
}