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Example to handle GET and POST request in Golang

ParseForm populates r.Form and r.PostForm.
For all requests, ParseForm parses the raw query from the URL and updates r.Form.

User submitted form details storing in 2 variables name and address.
The HTML form have 2 input box of name and address.
Create two different files form.html and main.go 
<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8" />
</head>
<body>
<div>
  <form method="POST" action="/">     
      <label>Name</label><input name="name" type="text" value="" />
      <label>Address</label><input name="address" type="text" value="" />
      <input type="submit" value="submit" />
  </form>
</div>
</body>
</html>

Example

package main

import (
	"fmt"
	"log"
	"net/http"
)
func hello(w http.ResponseWriter, r *http.Request) {
	if r.URL.Path != "/" {
		http.Error(w, "404 not found.", http.StatusNotFound)
		return
	}

	switch r.Method {
	case "GET":		
		 http.ServeFile(w, r, "form.html")
	case "POST":
		// Call ParseForm() to parse the raw query and update r.PostForm and r.Form.
		if err := r.ParseForm(); err != nil {
			fmt.Fprintf(w, "ParseForm() err: %v", err)
			return
		}
		fmt.Fprintf(w, "Post from website! r.PostFrom = %v\n", r.PostForm)
		name := r.FormValue("name")
		address := r.FormValue("address")
		fmt.Fprintf(w, "Name = %s\n", name)
		fmt.Fprintf(w, "Address = %s\n", address)
	default:
		fmt.Fprintf(w, "Sorry, only GET and POST methods are supported.")
	}
}

func main() {
	http.HandleFunc("/", hello)

	fmt.Printf("Starting server for testing HTTP POST...\n")
	if err := http.ListenAndServe(":8080", nil); err != nil {
		log.Fatal(err)
	}
}

Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/golayrva/public_html/lib/Varien/Filter/Template/Tokenizer/Abstract.php on line 89
You need to run main.go and then in browser.
Run url http://localhost:8080/ in your browser and see the below content




After submit the form

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