在golang中protobuf的功能主要就是序列化与反序列化两种操作,这两种操作的方法在第三方的包里面都有。
首先引用protobuf,从github上获得相应的包。地址"github.com/golang/protobuf/proto"
在golang中需要先把proto格式的文件使用protoc转换成对应的go的struct类型。
proto文件:
syntax="proto2";
package nxin;
message Nxin{
required int32 id=1;
required string name=2;
required string telphone=3;
}
需要注意的是syntax为proto2,与proto3不同。3中不需要前面的required,并且3生成的struct赋值时不能使用proto.string()这种格式。转换后的go文件:
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: nxin.proto
/*
Package nxin is a generated protocol buffer package.
It is generated from these files:
nxin.proto
It has these top-level messages:
Nxin
*/
package nxin
import proto "github.com/golang/protobuf/proto"
import fmt "fmt"
import math "math"
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = 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.ProtoPackageIsVersion2 // please upgrade the proto package
type Nxin struct {
Id *int32 `protobuf:"varint,1,req,name=id" json:"id,omitempty"`
Name *string `protobuf:"bytes,2,req,name=name" json:"name,omitempty"`
Telphone *string `protobuf:"bytes,3,req,name=telphone" json:"telphone,omitempty"`
XXX_unrecognized []byte `json:"-"`
}
func (m *Nxin) Reset() { *m = Nxin{} }
func (m *Nxin) String() string { return proto.CompactTextString(m) }
func (*Nxin) ProtoMessage() {}
func (*Nxin) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
func (m *Nxin) GetId() int32 {
if m != nil && m.Id != nil {
return *m.Id
}
return 0
}
func (m *Nxin) GetName() string {
if m != nil && m.Name != nil {
return *m.Name
}
return ""
}
func (m *Nxin) GetTelphone() string {
if m != nil && m.Telphone != nil {
return *m.Telphone
}
return ""
}
func init() {
proto.RegisterType((*Nxin)(nil), "nxin.Nxin")
}
func init() { proto.RegisterFile("nxin.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
// 98 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0xe2, 0xca, 0xab, 0xc8, 0xcc,
0xd3, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0x62, 0x01, 0xb1, 0x95, 0xdc, 0xb8, 0x58, 0xfc, 0x2a,
0x32, 0xf3, 0x84, 0xf8, 0xb8, 0x98, 0x32, 0x53, 0x24, 0x18, 0x15, 0x98, 0x34, 0x58, 0x83, 0x98,
0x32, 0x53, 0x84, 0x84, 0xb8, 0x58, 0xf2, 0x12, 0x73, 0x53, 0x25, 0x98, 0x14, 0x98, 0x34, 0x38,
0x83, 0xc0, 0x6c, 0x21, 0x29, 0x2e, 0x8e, 0x92, 0xd4, 0x9c, 0x82, 0x8c, 0xfc, 0xbc, 0x54, 0x09,
0x66, 0xb0, 0x38, 0x9c, 0x0f, 0x08, 0x00, 0x00, 0xff, 0xff, 0x49, 0x3f, 0x8a, 0xdd, 0x5a, 0x00,
0x00, 0x00,
}
主要操作:
msg:=&model.Helloworld{10,"wang","beijing"}
buffer,_:=proto.Marshal(msg)//序列化
fmt.Print(buffer)
m2:=&model.Helloworld{}
proto.Unmarshal(buffer,m2)//反序列化
fmt.Println(m2)
nx:=&nxin.Nxin{Id:proto.Int32(23),Name:proto.String("nxin"),Telphone:proto.String("18311175181")}
b2,_:=proto.Marshal(nx)
f,_:=os.Create("D:/nx.txt")
defer f.Close()
f.Write(b2)
序列化以后数据被转换成二进制类型,反序列化后直接写入对应的结构体类型。