文章来源   https://www.jianshu.com/p/d189b205ae7e

安装

在go中使用protobuf，有两个可选用的包goprotobuf（go官方出品）和gogoprotobuf。

gogoprotobuf完全兼容google protobuf，它生成的代码质量和编解码性能均比goprotobuf高一些

安装protoc

首先去下载protobuf的编译器protoc，windows上可以直接下到exe文件(linux则需要编译)，最后将下载好的可执行文件拷贝到GOPATH的bin目录下(GOPATH/bin目录最好添加到系统环境变量里)

安装protobuf库文件

gogetgithub.com/golang/protobuf/proto

goprotobuf

安装插件

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

实例demo

/指定版本// 不同版本写法存在差异syntax="proto3";// 包名，通过protoc生成go文件时packagetest;// 手机类型// 指定字段顺序 第一个必须为0enum PhoneType{HOME=0;WORK=1;}// 手机message Phone{PhoneTypetype=1;stringnumber=2;}// 人message Person{int32id=1;stringname=2;// repeated表示重复repeated Phone phones=3;}message ContactBook{repeated Person persons=1;}

生成go文件

protoc --go_out=.  *.proto

生成后的文件：

// Code generated by protoc-gen-go. DO NOT EDIT.// source: test.proto// 包名，通过protoc生成go文件时packagetestprotobufimport(fmt"fmt"proto"github.com/golang/protobuf/proto"math"math")// Reference imports to suppress errors if they are not otherwise used.var_=proto.Marshalvar_=fmt.Errorfvar_=math.Inf// This is a compile-time assertion to ensure that this generated file// is compatible with the proto package it is being compiled against.// A compilation error at this line likely means your copy of the// proto package needs to be updated.const_=proto.ProtoPackageIsVersion3// please upgrade the proto package// 手机类型// 指定字段顺序 第一个必须为0typePhoneTypeint32const(PhoneType_HOME PhoneType=0PhoneType_WORK PhoneType=1)varPhoneType_name=map[int32]string{0:"HOME",1:"WORK",}varPhoneType_value=map[string]int32{"HOME":0,"WORK":1,}func(x PhoneType)String()string{returnproto.EnumName(PhoneType_name,int32(x))}func(PhoneType)EnumDescriptor()([]byte,[]int){returnfileDescriptor_c161fcfdc0c3ff1e,[]int{0}}// 手机typePhonestruct{Type                PhoneType`protobuf:"varint,1,opt,name=type,proto3,enum=testprotobuf.PhoneType" json:"type,omitempty"`Numberstring`protobuf:"bytes,2,opt,name=number,proto3" json:"number,omitempty"`XXX_NoUnkeyedLiteralstruct{}`json:"-"`XXX_unrecognized[]byte`json:"-"`XXX_sizecacheint32`json:"-"`}func(m*Phone)Reset(){*m=Phone{}}func(m*Phone)String()string{returnproto.CompactTextString(m)}func(*Phone)ProtoMessage(){}func(*Phone)Descriptor()([]byte,[]int){returnfileDescriptor_c161fcfdc0c3ff1e,[]int{0}}func(m*Phone)XXX_Unmarshal(b[]byte)error{returnxxx_messageInfo_Phone.Unmarshal(m,b)}func(m*Phone)XXX_Marshal(b[]byte,deterministicbool)([]byte,error){returnxxx_messageInfo_Phone.Marshal(b,m,deterministic)}func(m*Phone)XXX_Merge(src proto.Message){xxx_messageInfo_Phone.Merge(m,src)}func(m*Phone)XXX_Size()int{returnxxx_messageInfo_Phone.Size(m)}func(m*Phone)XXX_DiscardUnknown(){xxx_messageInfo_Phone.DiscardUnknown(m)}varxxx_messageInfo_Phone proto.InternalMessageInfofunc(m*Phone)GetType()PhoneType{ifm!=nil{returnm.Type}returnPhoneType_HOME}func(m*Phone)GetNumber()string{ifm!=nil{returnm.Number}return""}// 人typePersonstruct{Idint32`protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`Namestring`protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`// repeated表示重复Phones[]*Phone`protobuf:"bytes,3,rep,name=phones,proto3" json:"phones,omitempty"`XXX_NoUnkeyedLiteralstruct{}`json:"-"`XXX_unrecognized[]byte`json:"-"`XXX_sizecacheint32`json:"-"`}func(m*Person)Reset(){*m=Person{}}func(m*Person)String()string{returnproto.CompactTextString(m)}func(*Person)ProtoMessage(){}func(*Person)Descriptor()([]byte,[]int){returnfileDescriptor_c161fcfdc0c3ff1e,[]int{1}}func(m*Person)XXX_Unmarshal(b[]byte)error{returnxxx_messageInfo_Person.Unmarshal(m,b)}func(m*Person)XXX_Marshal(b[]byte,deterministicbool)([]byte,error){returnxxx_messageInfo_Person.Marshal(b,m,deterministic)}func(m*Person)XXX_Merge(src proto.Message){xxx_messageInfo_Person.Merge(m,src)}func(m*Person)XXX_Size()int{returnxxx_messageInfo_Person.Size(m)}func(m*Person)XXX_DiscardUnknown(){xxx_messageInfo_Person.DiscardUnknown(m)}varxxx_messageInfo_Person proto.InternalMessageInfofunc(m*Person)GetId()int32{ifm!=nil{returnm.Id}return0}func(m*Person)GetName()string{ifm!=nil{returnm.Name}return""}func(m*Person)GetPhones()[]*Phone{ifm!=nil{returnm.Phones}returnnil}typeContactBookstruct{Persons[]*Person`protobuf:"bytes,1,rep,name=persons,proto3" json:"persons,omitempty"`XXX_NoUnkeyedLiteralstruct{}`json:"-"`XXX_unrecognized[]byte`json:"-"`XXX_sizecacheint32`json:"-"`}func(m*ContactBook)Reset(){*m=ContactBook{}}func(m*ContactBook)String()string{returnproto.CompactTextString(m)}func(*ContactBook)ProtoMessage(){}func(*ContactBook)Descriptor()([]byte,[]int){returnfileDescriptor_c161fcfdc0c3ff1e,[]int{2}}func(m*ContactBook)XXX_Unmarshal(b[]byte)error{returnxxx_messageInfo_ContactBook.Unmarshal(m,b)}func(m*ContactBook)XXX_Marshal(b[]byte,deterministicbool)([]byte,error){returnxxx_messageInfo_ContactBook.Marshal(b,m,deterministic)}func(m*ContactBook)XXX_Merge(src proto.Message){xxx_messageInfo_ContactBook.Merge(m,src)}func(m*ContactBook)XXX_Size()int{returnxxx_messageInfo_ContactBook.Size(m)}func(m*ContactBook)XXX_DiscardUnknown(){xxx_messageInfo_ContactBook.DiscardUnknown(m)}varxxx_messageInfo_ContactBook proto.InternalMessageInfofunc(m*ContactBook)GetPersons()[]*Person{ifm!=nil{returnm.Persons}returnnil}funcinit(){proto.RegisterEnum("testprotobuf.PhoneType",PhoneType_name,PhoneType_value)proto.RegisterType((*Phone)(nil),"testprotobuf.Phone")proto.RegisterType((*Person)(nil),"testprotobuf.Person")proto.RegisterType((*ContactBook)(nil),"testprotobuf.ContactBook")}funcinit(){proto.RegisterFile("test.proto",fileDescriptor_c161fcfdc0c3ff1e)}varfileDescriptor_c161fcfdc0c3ff1e=[]byte{// 221 bytes of a gzipped 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作者：神奇的考拉

链接：https://www.jianshu.com/p/d189b205ae7e

来源：简书

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