Go language environment construction under MacOS

1. Download the installation package

The download address of the installation package is: https://golang.org/dl/

If you can't open it, you can use this address: Downloads - The Go Programming Language

 Note: Choose different versions according to the cpu, M series (ARM64)｜Intel (x86-64)

After the download is complete, open the installation package and the next step will be OK

After the installation is complete, verify that the installation was successful

go version

 The above prompt appears to indicate that the installation is ok.

2. Configure environment variables

1. Terminal input vim ~/.zshrc to enter the configuration file , input i to edit

2. Regardless of whether it is an empty text or a content, copy the code below at the end

*Note: GOPATH specifies the path to be modified to your own project path

#注意=号前后不能有空格
export GOPATH=/Users/chenshiwei/workspace/golang #请改成你的项目路径
export GOBIN=$GOPATH/bin   #GOLANG运行目录一般不可修改
export PATH=$PATH:$GOBIN 

3. After the paste is complete, enter esc at the bottom of the terminal : wq to save the modification and exit the editor

4. Enter source ~/.zshrc in the terminal to refresh the golang configuration file

5. Enter go env to check whether the configuration takes effect

 setup complete

 3. Open VScode to write the first piece of golang code

1. Enter the project root directory to create bin, pkg, src three directories

Describe the role of the three directories:

bin: store compiled binary files

pkg: store compiled library files

src: store your own code/package

2. Install the go plugin in vs code

 After the installation is complete, we start to create our first go code. In the process of writing code, the lower right corner of vs code will prompt us to install some library files. We click Install All, but during the installation process, we find that the installation has been unsuccessful, and the following code appears:

leyangjundeMacBook-Pro:photoleyangjun$ go get -u github.com/spf13/cobra
go get -u github.com/spf13/cobra

go get github.com/spf13/cobra: module github.com/spf13/cobra: Get https://proxy.golang.org/github.com/spf13/cobra/@v/list: dial tcp 142.251.10.141:443: i/o timeout

Reason: https://proxy.golang.org/github.com/ cannot be accessed in China

Solution: Change to a domestically accessible address and set the GOPROXY proxy

go env -w GOPROXY=https://goproxy.cn,direct

go env -w GOSUMDB=off #关闭包的有效性验证

go env -w GOSUMDB=sum.golang.google.cn #也可设置国内提供的sum 验证服务

Note: The -w flag requires one or more arguments of the form NAME=VALUE and overrides the default setting

After the setting is complete, we re-Install All and found that all the installations were successful this time.

3. Create our project directory under src, and create a main.go file under the directory with the following content:

package main

import "fmt"

func main() {
	fmt.Println("hello world!!!")
}

4. The vs code terminal enters our current folder, enter  go run main.go to execute our code

 So far our environment configuration and the first golang program are completed, congratulations.

 Thanks for reading, please leave a message if you have any questions.