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fiber middleware to automatically generate RESTful API documentation with Swagger


  1. Add comments to your API source code, See Declarative Comments Format.
  2. Download Swag for Go by using:
go get -u github.com/swaggo/swag/cmd/swag
  1. Run the Swag in your Go project root folder which contains main.go file, Swag will parse comments and generate required files(docs folder and docs/doc.go).
swag init
  1. Download swagger by using:
go get -u github.com/gofiber/swagger

And import following in your code:

import "github.com/gofiber/swagger" // swagger handler

Canonical example:

package main

import (

	// docs are generated by Swag CLI, you have to import them.
	// replace with your own docs folder, usually "github.com/username/reponame/docs"
	_ "github.com/gofiber/swagger/example/docs"

// @title Fiber Example API
// @version 1.0
// @description This is a sample swagger for Fiber
// @termsOfService http://swagger.io/terms/
// @contact.name API Support
// @contact.email [email protected]
// @license.name Apache 2.0
// @license.url http://www.apache.org/licenses/LICENSE-2.0.html
// @host localhost:8080
// @BasePath /
func main() {
	app := fiber.New()

	app.Get("/swagger/*", swagger.HandlerDefault) // default

	app.Get("/swagger/*", swagger.New(swagger.Config{ // custom
		URL: "http://example.com/doc.json",
		DeepLinking: false,
		// Expand ("list") or Collapse ("none") tag groups by default
		DocExpansion: "none",
		// Prefill OAuth ClientId on Authorize popup
		OAuth: &swagger.OAuthConfig{
			AppName:  "OAuth Provider",
			ClientId: "21bb4edc-05a7-4afc-86f1-2e151e4ba6e2",
		// Ability to change OAuth2 redirect uri location
		OAuth2RedirectUrl: "http://localhost:8080/swagger/oauth2-redirect.html",

  1. Run it, and browser to http://localhost:8080/swagger, you can see Swagger 2.0 Api documents.


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