How to install and deploy golang on multiple platforms

Golang, also known as the Go language, is an emerging programming language developed by Google. Compared with other languages, Golang is lightweight and efficient, and can effectively handle high concurrency situations. Because of its unique characteristics, more and more developers and companies are choosing to use Golang as their preferred development language. This article will tell you how to install and deploy Golang.

1. Golang installation

To use Golang for development, you first need to install Golang on your computer. Here, we will introduce how to install Golang on Windows systems, Linux systems, and Mac OSX systems.

1. Install Golang on Windows system

To install Golang on Windows system, you can follow the following steps:

Step 1: Download the Golang binary installation package

First, you need to download the Golang binary installation package from the Golang official website https://golang.org/dl/ and select the version that matches the current Windows system.

Step 2: Run the installation program

After downloading the Golang binary installation package, double-click to run the downloaded installation program. Then, just follow the prompts to install it.

Step 3: Configure environment variables

After the installation is completed, you need to add the path of Golang to the system environment variables of the Windows system so that the relevant Golang libraries and libraries can be automatically found when running the Golang program. tool.

2. Install Golang on Linux system

To install Golang on Linux system, you can follow the following steps.

Step 1: Obtain the Golang binary package

To install Golang on a Linux system, you need to obtain the officially released binary package first. Use the command line to execute the following command to obtain:

$ wget https://golang.org/dl/go1.15.3.linux-amd64.tar.gz

at In this command, "go1.15.3.linux-amd64.tar.gz" is the name of the Golang binary installation package. Please make sure that the name matches the required version number.

Step 2: Decompress the binary package

After downloading the Golang binary installation package, use the following command to decompress it:

$ sudo tar -C /usr/local/ -xzf go1.15.3.linux-amd64.tar.gz

Step 3: Configure environment variables

After completing the installation, you need to add the binary path of Golang to the environment variables. Enter the following command in the terminal to edit the environment variable file:

$ sudo nano /etc/profile

Add the following content at the end of the environment variable file:

export PATH=$ PATH:/usr/local/go/bin

After saving the changes, close the editor and make the modified environment variable file take effect:

$ source /etc/profile

3. Install Golang on Mac OSX system

The process of installing Golang on Mac OSX is similar to that on Linux. You can follow the steps below.

Step 1: Obtain the Golang binary package

In order to install Golang on Mac OSX, you also need to obtain the officially released binary package first. Use the command line to execute the following command to obtain:

$ curl -O https://golang.org/dl/go1.15.3.darwin-amd64.pkg

at In this command, "go1.15.3.darwin-amd64.pkg" is the name of the Golang binary installation package. Please make sure that the name matches the required version number.

Step 2: Run the installation program

After downloading the Golang binary installation package, double-click to run the installation program and follow the prompts to install.

Step 3: Configure environment variables

After the installation is completed, you also need to add the path of Golang to the environment variables. Enter the following command in Terminal to edit the environment variable file:

$ nano ~/.bash_profile

Add the following content in the editor:

export PATH=$PATH: /usr/local/go/bin

After saving the changes, close the editor and make the modified environment variable file take effect:

$ source ~/.bash_profile

two , Golang deployment

After the installation is completed, you can start deploying Golang. Here, we'll cover how to deploy a Golang web application and simply run tests. We will use Go's built-in web framework - net/http.

1. Create a Web Application

First, we need to create a Golang web application on the local computer. The way to create a program is very simple. You only need to enter the project folder in the command line and execute the following command:

$ mkdir myapp && cd myapp
$ go mod init myapp

this paragraph The command will create a project named myapp and create a module named "myapp" within the project.

2. Create a Web server

Next, we need to write program code. Create a file named "main.go" in the project folder and write the following code in the file:

package main

import (

"fmt"
"net/http"

)

func main() {

http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintln(w, "Hello, World!")
})

http.ListenAndServe(":8080", nil)

}

This code will create a simple web server. When the user accesses the root path of the server, the server will return "Hello , World!" string.

3. Run the Web server

After completing the code writing, we can use the following command in the terminal to execute the program.

$ go run main.go

At this time, the terminal will output information similar to "Listening on :8080", which means that the Golang web server has started and started listening to port 8080.

4. Test Web Server

Open the web browser and enter the URL of "localhost:8080". If you can see the string "Hello, World!", it means that the Golang web application has been successfully deployed to the local computer. If you want to test the server's response to the outside world, you can replace localhost with the server's IP address or domain name to access the server.

Summary

This article introduces how to install and deploy Golang. When installing Golang, you can choose to download the binary installation package from the official website and install it according to the prompts, or use the package manager to install it. When deploying Golang applications, we take a simple example to demonstrate how to create a Golang web application. Overall, Golang is very simple to install and deploy, making it a good programming language choice.

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