GRPC-go版本

GRPC-go版本

1.安装GO,protobuf

只适合有梯子的

GO的安装没必要说了

protobuf :https://github.com/protocolbuffers/protobuf/releases

选合适的版本，将解压后bin目录的protoc.exe放到GO的安装目录的bin下(省事)

打开CMD，输入protoc --version，正常如下图

环境变量有三个需要设置

1. GOPATH：是GO的工程目录

2. GOBIN：生成的exe目录

3. PATH:电脑环境变量

   

2.安装相关包

2021-0721

好像要在grpcTest目录下，go mod init 之后进行安装，也有可能是我电脑问题，

1.golang 的proto工具包

go get -u github.com/golang/protobuf/proto

2.golang 的proto编译支持

go get -u github.com/golang/protobuf/protoc-gen-go

3.安装grpc包

go get -u google.golang.org/grpc

4.安装grpc-gen插件

go get -u google.golang.org/protobuf/cmd/protoc-gen-go
go install google.golang.org/protobuf/cmd/protoc-gen-go
go get -u google.golang.org/grpc/cmd/protoc-gen-go-grpc
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc

安装正常的话，在GOPATH的bin目录下会有两个exe

3.检验

去下载示例代码,放到GOPATH下，找到里面的helloworld

 git clone -b v1.35.0 https://github.com/grpc/grpc-go

在GOPATH下新建grpcTest，项目结构如下

helloworld.proto(官方)

// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

option go_package = "google.golang.org/grpc/examples/helloworld/helloworld";
-->换成option go_package="." 表示生成的proto.go在当前目录
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;
}

生成.go文件

client.go(官方) server和client一样，我这就只列举client

/*
 *
 * Copyright 2015 gRPC authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

// Package main implements a client for Greeter service.
package main

import (
    "context"
    "log"
    "os"
    "time"

    "google.golang.org/grpc"
    pb "google.golang.org/grpc/examples/helloworld/helloworld"
    --》改成   pb "grpcTest/proto"
)

const (
    address     = "localhost:50051"
    defaultName = "world"
)

func main() {
    // Set up a connection to the server.
    conn, err := grpc.Dial(address, grpc.WithInsecure(), grpc.WithBlock())
    if err != nil {
        log.Fatalf("did not connect: %v", err)
    }
    defer conn.Close()
    c := pb.NewGreeterClient(conn)

    // Contact the server and print out its response.
    name := defaultName
    if len(os.Args) > 1 {
        name = os.Args[1]
    }
    ctx, cancel := context.WithTimeout(context.Background(), time.Second)
    defer cancel()
    r, err := c.SayHello(ctx, &pb.HelloRequest{Name: name})
    if err != nil {
        log.Fatalf("could not greet: %v", err)
    }
    log.Printf("Greeting: %s", r.GetMessage())
}

然后去运行sever和client

ok了

还是建议大家多去看官方的介绍，不要怕英文，有点底子的都能看懂

Quick start | Go | gRPC

出现protoc-gen-go' is not recognized as***********就是你没配置好环境变量，把GOPATH下的bin加到PATH里去

参考链接

• Quick start | Go | gRPC
• Go gRPC教程-环境安装（一） - 烟花易冷人憔悴 - 博客园 (cnblogs.com)
• (5条消息) 完美解决：protoc-gen-go-grpc: program not found or is not executable_李纳克斯的博客-CSDN博客