In the previous tutorial, we built a simple HTTP server in Go that returned plain text responses.

While that works, most modern applications communicate using JSON.

Frontend applications, mobile apps, and APIs commonly exchange data in JSON format.

In this tutorial, we will learn how to return JSON responses from a Go server using Go's standard library.

By the end, you will understand:

how JSON responses work in Go

how to create structs

how to encode data into JSON

how to send JSON from an HTTP server

Prerequisites

To follow along, you should have:

Go installed

basic familiarity with Go syntax

understanding of the net/http package

You can confirm if Go is installed by running:

go version

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Step 1 — Create the Project

Create a new folder for the project:

mkdir go-json-server cd go-json-server

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Now initialize a Go module:

go mod init go-json-server

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This…