前言

protoc是一款用C++编写的工具，其可以将proto文件翻译为指定语言的代码。在go-zero的微服务中，我们采用grpc进行服务间的通信，而grpc的编写就需要用到protoc和翻译成go语言rpc stub代码的插件protoc-gen-go。

方式一：goctl一键安装

$ goctl env check -i -f --verbose                                 
[goctl-env]: preparing to check env

[goctl-env]: looking up "protoc"
[goctl-env]: "protoc" is not found in PATH
[goctl-env]: preparing to install "protoc"
"protoc" installed from cache
[goctl-env]: "protoc" is already installed in "/Users/keson/go/bin/protoc"

[goctl-env]: looking up "protoc-gen-go"
[goctl-env]: "protoc-gen-go" is not found in PATH
[goctl-env]: preparing to install "protoc-gen-go"
"protoc-gen-go" installed from cache
[goctl-env]: "protoc-gen-go" is already installed in "/Users/keson/go/bin/protoc-gen-go"

[goctl-env]: looking up "protoc-gen-go-grpc"
[goctl-env]: "protoc-gen-go-grpc" is not found in PATH
[goctl-env]: preparing to install "protoc-gen-go-grpc"
"protoc-gen-go-grpc" installed from cache
[goctl-env]: "protoc-gen-go-grpc" is already installed in "/Users/keson/go/bin/protoc-gen-go-grpc"

[goctl-env]: congratulations! your goctl environment is ready!

方式二： 源文件安装

protoc安装

• 进入protobuf release 页面，选择适合自己操作系统的压缩包文件
• 解压​protoc-x.x.x-osx-x86_64.zip​并进入​protoc-x.x.x-osx-x86_64​

  $ cd protoc-x.x.x-osx-x86_64/bin

• 将启动的protoc二进制文件移动到被添加到环境变量的任意path下，如$GOPATH/bin，这里不建议直接将其和系统的以下path放在一起。

  $ mv protoc $GOPATH/bin

 Tip
$GOPATH为你本机的实际文件夹地址

• 验证安装结果

  $ protoc --version

  libprotoc x.x.x

protoc-gen-go/protoc-gen-go-grpc 安装

• 下载安装protoc-gen-go

  $ go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
  $ go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest