Play with Go RESTful API Service

Background introduction

The RESTful API is a common pattern in modern web application development, which uses the HTTP protocol to communicate and follows the REST architectural style. Go is a modern programming language with high performance, concise syntax and powerful concurrency processing capabilities. In Go language, implementing RESTful API is a common task. Let’s take a closer look at how to play RESTful API services in Go language.

Core concepts and connections

RESTful API

RESTful API is an architectural style based on the HTTP protocol. It uses CRUD (create, read, update, delete) operations to implement resource management. The core concepts of the RESTful API include:

• Use HTTP methods to communicate (GET, POST, PUT, DELETE, etc.)
• Use URI to represent resources
• Use HTTP status code to represent the processing results of the request
• Use JSON or XML format to represent data

Go Language

Go is a modern programming language developed in 2009 by Google's Robert Griesemer, Rob Pike and Ken Thompson. The Go language has the following characteristics:

• Static type system
• Garbage recycling
• Concurrent processing capability
• Concise syntax

Get started with Gin framework quickly

Gin is a lightweight, high-performance Go language web framework that provides rich features to help you quickly build RESTful API services. Need to usemodForm management of projects.

• Install Gin:go get -u /gin-gonic/gin
• Create a simple API:

package main

import (
	"strconv"
	"strings"

	"/gin-gonic/gin"
)

type User struct {
	ID   int    `json:"id"`
	Name string `json:"name"`
}

var users = []User{
	{ID: 1, Name: "Zhang San"},
	{ID: 2, Name: "Li Si"},
	{ID: 3, Name: "Wang Wu"},
}

func main() {
	// Create the default routing engine	r := ()

	// Define the route	("/users/:id", getUser)

	// Start the service	(":8080")
}

func getUser(c *) {
	id := ("id")
	var user User
	found := false
	for _, u := range users {
		if (id, ()) {
			user = u
			found = true
			break
		}
	}
	if found {
		(200, user)
	} else {
		(404, {"message": "The user does not exist"})
	}
}

Summarize

This article introduces the basic knowledge and practical skills of Go language RESTful API development, and shows how to use the Gin framework to build RESTful API services.

This is the end of this article about using Go to play RESTful API services. For more information about Go RESTful API services, please search for my previous articles or continue browsing the related articles below. I hope everyone will support me in the future!