请帮助我。以下内容在... / gopath / src / google.golang.org / grpc / examples / helloworld / helloworld / helloworld.proto
中给出============================================= < / p>
syntax = "proto3";
option java_multiple_files = true;
option java_package = "io.grpc.examples.helloworld";
option java_outer_classname = "HelloWorldProto";
package helloworld;
// The greeting service definition.
service Greeter {
// Sends a greeting
rpc SayHello (HelloRequest) returns (HelloReply) {}
}
// The request message containing the user's name.
message HelloRequest {
string name = 1;
}
// The response message containing the greetings
message HelloReply {
string message = 1;
}
================================================ =======
然后，我编译以获取Go代码
>> protoc helloworld.proto --go_out=plugins=:.
生成的代码在下面，但与/gopath/src/google.golang.org/grpc/examples/helloworld/helloworld/helloworld.pb.go
完全不同=======
It has these top-level messages:
HelloRequest
HelloReply
*/
package helloworld
import proto "github.com/golang/protobuf/proto"
import (
context "golang.org/x/net/context"
grpc "google.golang.org/grpc"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ context.Context
var _ grpc.ClientConn
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
// The request message containing the user's name.
type HelloRequest struct {
Name string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
}
func (m *HelloRequest) Reset() { *m = HelloRequest{} }
func (m *HelloRequest) String() string { return proto.CompactTextString(m) }
func (*HelloRequest) ProtoMessage() {}
// The response message containing the greetings
type HelloReply struct {
Message string `protobuf:"bytes,1,opt,name=message" json:"message,omitempty"`
}
func (m *HelloReply) Reset() { *m = HelloReply{} }
func (m *HelloReply) String() string { return proto.CompactTextString(m) }
func (*HelloReply) ProtoMessage() {}
func init() {
}
// Client API for Greeter service
type GreeterClient interface {
// Sends a greeting
SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error)
}
type greeterClient struct {
cc *grpc.ClientConn
}
func NewGreeterClient(cc *grpc.ClientConn) GreeterClient {
return &greeterClient{cc}
}
func (c *greeterClient) SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error) {
out := new(HelloReply)
err := grpc.Invoke(ctx, "/helloworld.Greeter/SayHello", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// Server API for Greeter service
type GreeterServer interface {
// Sends a greeting
SayHello(context.Context, *HelloRequest) (*HelloReply, error)
}
func RegisterGreeterServer(s *grpc.Server, srv GreeterServer) {
s.RegisterService(&_Greeter_serviceDesc, srv)
}
func _Greeter_SayHello_Handler(srv interface{}, ctx context.Context, codec grpc.Codec, buf []byte) (interface{}, error) {
in := new(HelloRequest)
if err := codec.Unmarshal(buf, in); err != nil {
return nil, err
}
out, err := srv.(GreeterServer).SayHello(ctx, in)
if err != nil {
return nil, err
}
return out, nil
}
var _Greeter_serviceDesc = grpc.ServiceDesc{
ServiceName: "helloworld.Greeter",
HandlerType: (*GreeterServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "SayHello",
Handler: _Greeter_SayHello_Handler,
},
},
Streams: []grpc.StreamDesc{},
}
============================================
我附加了/gopath/src/google.golang.org/grpc/examples/helloworld/helloworld/helloworld.pb.go
中提供的文件================================================ =====
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: helloworld.proto
package helloworld
import proto "github.com/golang/protobuf/proto"
import fmt "fmt"
import math "math"
import (
context "golang.org/x/net/context"
grpc "google.golang.org/grpc"
)
// 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
// The request message containing the user's name.
type HelloRequest struct {
Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *HelloRequest) Reset() { *m = HelloRequest{} }
func (m *HelloRequest) String() string { return proto.CompactTextString(m) }
func (*HelloRequest) ProtoMessage() {}
func (*HelloRequest) Descriptor() ([]byte, []int) {
return fileDescriptor_helloworld_71e208cbdc16936b, []int{0}
}
func (m *HelloRequest) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_HelloRequest.Unmarshal(m, b)
}
func (m *HelloRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_HelloRequest.Marshal(b, m, deterministic)
}
func (dst *HelloRequest) XXX_Merge(src proto.Message) {
xxx_messageInfo_HelloRequest.Merge(dst, src)
}
func (m *HelloRequest) XXX_Size() int {
return xxx_messageInfo_HelloRequest.Size(m)
}
func (m *HelloRequest) XXX_DiscardUnknown() {
xxx_messageInfo_HelloRequest.DiscardUnknown(m)
}
var xxx_messageInfo_HelloRequest proto.InternalMessageInfo
func (m *HelloRequest) GetName() string {
if m != nil {
return m.Name
}
return ""
}
// The response message containing the greetings
type HelloReply struct {
Message string `protobuf:"bytes,1,opt,name=message,proto3" json:"message,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *HelloReply) Reset() { *m = HelloReply{} }
func (m *HelloReply) String() string { return proto.CompactTextString(m) }
func (*HelloReply) ProtoMessage() {}
func (*HelloReply) Descriptor() ([]byte, []int) {
return fileDescriptor_helloworld_71e208cbdc16936b, []int{1}
}
func (m *HelloReply) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_HelloReply.Unmarshal(m, b)
}
func (m *HelloReply) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_HelloReply.Marshal(b, m, deterministic)
}
func (dst *HelloReply) XXX_Merge(src proto.Message) {
xxx_messageInfo_HelloReply.Merge(dst, src)
}
func (m *HelloReply) XXX_Size() int {
return xxx_messageInfo_HelloReply.Size(m)
}
func (m *HelloReply) XXX_DiscardUnknown() {
xxx_messageInfo_HelloReply.DiscardUnknown(m)
}
var xxx_messageInfo_HelloReply proto.InternalMessageInfo
func (m *HelloReply) GetMessage() string {
if m != nil {
return m.Message
}
return ""
}
func init() {
proto.RegisterType((*HelloRequest)(nil), "helloworld.HelloRequest")
proto.RegisterType((*HelloReply)(nil), "helloworld.HelloReply")
}
// Reference imports to suppress errors if they are not otherwise used.
var _ context.Context
var _ grpc.ClientConn
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
const _ = grpc.SupportPackageIsVersion4
// GreeterClient is the client API for Greeter service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
type GreeterClient interface {
// Sends a greeting
SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error)
}
type greeterClient struct {
cc *grpc.ClientConn
}
func NewGreeterClient(cc *grpc.ClientConn) GreeterClient {
return &greeterClient{cc}
}
func (c *greeterClient) SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error) {
out := new(HelloReply)
err := c.cc.Invoke(ctx, "/helloworld.Greeter/SayHello", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// GreeterServer is the server API for Greeter service.
type GreeterServer interface {
// Sends a greeting
SayHello(context.Context, *HelloRequest) (*HelloReply, error)
}
func RegisterGreeterServer(s *grpc.Server, srv GreeterServer) {
s.RegisterService(&_Greeter_serviceDesc, srv)
}
func _Greeter_SayHello_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(HelloRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(GreeterServer).SayHello(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/helloworld.Greeter/SayHello",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(GreeterServer).SayHello(ctx, req.(*HelloRequest))
}
return interceptor(ctx, in, info, handler)
}
var _Greeter_serviceDesc = grpc.ServiceDesc{
ServiceName: "helloworld.Greeter",
HandlerType: (*GreeterServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "SayHello",
Handler: _Greeter_SayHello_Handler,
},
},
Streams: []grpc.StreamDesc{},
Metadata: "helloworld.proto",
}
func init() { proto.RegisterFile("helloworld.proto", fileDescriptor_helloworld_71e208cbdc16936b) }
var fileDescriptor_helloworld_71e208cbdc16936b = []byte{
// 175 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x12, 0xc8, 0x48, 0xcd, 0xc9,
0xc9, 0x2f, 0xcf, 0x2f, 0xca, 0x49, 0xd1, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0xe2, 0x42, 0x88,
0x28, 0x29, 0x71, 0xf1, 0x78, 0x80, 0x78, 0x41, 0xa9, 0x85, 0xa5, 0xa9, 0xc5, 0x25, 0x42, 0x42,
0x5c, 0x2c, 0x79, 0x89, 0xb9, 0xa9, 0x12, 0x8c, 0x0a, 0x8c, 0x1a, 0x9c, 0x41, 0x60, 0xb6, 0x92,
0x1a, 0x17, 0x17, 0x54, 0x4d, 0x41, 0x4e, 0xa5, 0x90, 0x04, 0x17, 0x7b, 0x6e, 0x6a, 0x71, 0x71,
0x62, 0x3a, 0x4c, 0x11, 0x8c, 0x6b, 0xe4, 0xc9, 0xc5, 0xee, 0x5e, 0x94, 0x9a, 0x5a, 0x92, 0x5a,
0x24, 0x64, 0xc7, 0xc5, 0x11, 0x9c, 0x58, 0x09, 0xd6, 0x25, 0x24, 0xa1, 0x87, 0xe4, 0x02, 0x64,
0xcb, 0xa4, 0xc4, 0xb0, 0xc8, 0x14, 0xe4, 0x54, 0x2a, 0x31, 0x38, 0x19, 0x70, 0x49, 0x67, 0xe6,
0xeb, 0xa5, 0x17, 0x15, 0x24, 0xeb, 0xa5, 0x56, 0x24, 0xe6, 0x16, 0xe4, 0xa4, 0x16, 0x23, 0xa9,
0x75, 0xe2, 0x07, 0x2b, 0x0e, 0x07, 0xb1, 0x03, 0x40, 0x5e, 0x0a, 0x60, 0x4c, 0x62, 0x03, 0xfb,
0xcd, 0x18, 0x10, 0x00, 0x00, 0xff, 0xff, 0x0f, 0xb7, 0xcd, 0xf2, 0xef, 0x00, 0x00, 0x00,
}
==========================================
请帮我解释为什么我有不同的代码。我已经检查了当前版本的协议
>>protoc --version
libprotoc 3.6.1
答案 0 :(得分：0)
生成的代码取决于您安装的protoc，grpc和protoc-gen-go的版本。
请运行：
go get -u google.golang.org/grpc
go get -u github.com/golang/protobuf/protoc-gen-go
go get -u将强制库进行更新，即使您已经具有现有版本也是如此。
注意：我安装了什么版本的东西（尤其是protoc），这个问题可能会困扰您一个企业/长期运行的项目。我强烈建议您使用一种自动化策略，该策略将为您生成文件并将其检入到您的存储库中，以便您了解生成文件的版本。
答案 1 :(得分：0)
尝试此操作会有所帮助：
protoc file.proto --go_out=plugins=grpc:.
//注意：-
要更改原型缓冲区文件名，请使用：
option go_package = "example_newpb";
package example;