How to serve a static html file using a go web server?

Question

How do you serve index.html (or some other static HTML file) using a go web server?

I just want a basic, static HTML file (like an article, for example) which I can serve from a go web server. The HTML should be modifiable outside of the go program, as it would be in the case while using HTML templates.

This is my web server which only hosts hard-coded text ("Hello world!").
package main

import (
  "fmt"
  "net/http"
)

func handler(w http.ResponseWriter, r *http.Request) {
  fmt.Fprintf(w, "Hello world!")
}

func main() {
  http.HandleFunc("/", handler)
  http.ListenAndServe(":3000", nil)
}

Aditya Agrawal · Accepted Answer

That task is very easy with Golang net/http package. All You need to do is: package main import ( "net/http" ) func main() { http.Handle("/", http.FileServer(http.Dir("./static"))) http.ListenAndServe(":3000", nil) } assuming that static files are in folder named static in the root directory of the project. If it's in folder static, you'll have index.html file calling http://localhost:3000/ which will result in rendering that index file instead of listing all the files availible. Additionally, calling any other file in that folder (for example http://localhost:3000/clients.html) will show that file, properly rendered by the browser (at least Chrome, Firefox and Safari :)) serving files from "/static" instead of "/" If You want to serve files, say from folder ./public under url: localhost:3000/static You have to use additional function: func StripPrefix(prefix string, h Handler) Handler like this: package main import ( "net/http" ) func main() { http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("./public")))) http.ListenAndServe(":3000", nil) } Thanks to that, all your files from ./public are avalible under localhost:3000/static Without http.StripPrefix function, if you would try to access file localhost:3000/static/test.html, the server would look for it in ./public/static/test.html This is because the server treats the whole URI as a relative path to the file. Fortunately, it's easily solved with the built-in function.

Aditya Agrawal · Answer

How to Serve Static Sites with Go learn how to route static assets or static contents. Such as css, js, and image files

Go Language

Similar Questions

How to convert fixed size array to variable sized array in Go?

How to pass optional parameters in Go?

How to compare variable types with .(type) in Golang?

On a mission to build Next-Gen Community Platform for Developers

Facebook

Twitter

Linkedin

Instagram