How to use swaggo (swagger doc) in GoLang lang with http.ServeMux? - go

Question

In documentation https://github.com/swaggo/swag is using gin to initialize server, but in my application i'm using http.ServeMux and how initialize swaggo without use gin server
in Docs use
r.GET("/swagger/*any", ginSwagger.WrapHandler(swaggerFiles.Handler))
how can I use something like ...
mu.Handle("/swagger/*any", swaggerFiles.Handler)
......
follows as my initial idea, but don't work... rsrs
func Server() *http.ServeMux {
docs.SwaggerInfo.Title = "Swagger Example API"
docs.SwaggerInfo.Description = "This is a sample server Petstore server."
docs.SwaggerInfo.Version = "1.0"
docs.SwaggerInfo.Host = "petstore.swagger.io"
mu := http.NewServeMux()
mu.Handle("/metrics", promhttp.Handler())
mu.Handle("/swagger/*any", swaggerFiles.Handler)
mu.HandleFunc("/helloWorld", handlers.NewHelloWorldHandler().HelloWorldHandler)
mu.HandleFunc("/production/", handlers.NewProductionHandler().ProductionHandler)
return mu
}

Answer 1

If you have your swagger files built for distribution (i.e. static files) and are in say the directory: /some/dir/path/static/swagger
This should work with go's http router:
staticFilesPath := "/some/dir/path/static"
staticRoute := "/static/"
h := http.NewServeMux()
// static file handler for route '/static/*'
h.Handle(
staticRoute,
http.StripPrefix(
staticRoute,
http.FileServer(http.Dir(staticFilesPath)),
),
)
I find it helpful to add this also:
// (redirect a route if not recognized - remove in production)
//
// unrecognized routes will redirect to Swagger API docs
h.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
http.Redirect(w, r, staticRoute + "swagger/", http.StatusSeeOther)
})