如何在Golang中安装和配置gRPC开发环境

• 下载预编译的protoc二进制文件：GitHub Releases
• 解压后将bin/protoc加入PATH，例如复制到/usr/local/bin
• 验证安装：protoc --version，应输出类似libprotoc 3.20.3

brew install protobuf

• 安装gRPC-Go运行时：go get google.golang.org/grpc
• 安装Protobuf的Go插件支持：go get google.golang.org/protobuf/proto
• 安装用于生成gRPC代码的插件：go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
• 安装Protobuf的Go代码生成器：go install google.golang.org/protobuf/cmd/protoc-gen-go@latest

syntax = "proto3";
package helloworld;
option go_package = "./;helloworld";

service Greeter {
  rpc SayHello (HelloRequest) returns (HelloReply);
}

message HelloRequest {
  string name = 1;
}

message HelloReply {
  string message = 1;
}

protoc --go_out=. --go-grpc_out=. helloworld.proto

package main

import (
    "log"
    "net"

    pb "your-module/helloworld"
    "google.golang.org/grpc"
)

type server struct{ pb.UnimplementedGreeterServer }

func main() {
    lis, err := net.Listen("tcp", ":50051")
    if err != nil {
        log.Fatalf("failed to listen: %v", err)
    }
    s := grpc.NewServer()
    pb.RegisterGreeterServer(s, &server{})
    log.Println("gRPC server running on :50051")
    s.Serve(lis)
}