My solution to "Exercise Hello, parameter" from Section 03 of Francesc Campoy's Go Web Workshop

go-web-workshop_s03-e1.go

// https://github.com/campoy/go-web-workshop/blob/master/section03/README.md
// this version is able to handle multiple parameters with the same name

package main

import (
	"fmt"
	"log"
	"net/http"

	"github.com/gorilla/mux"
)

func friendHandler(w http.ResponseWriter, r *http.Request) {
	if err := r.ParseForm(); err != nil {
		log.Fatal(err)
	}
	names := r.Form["name"]

	if len(names) == 0 {
		names = append(names, "friend")
	}

	for _, n := range names {
		fmt.Fprintf(w, "Hello, %s!\n", n)
	}
}

func main() {
	r := mux.NewRouter()
	r.HandleFunc("/hello", friendHandler)
	http.Handle("/", r)
	if err := http.ListenAndServe("127.0.0.1:8080", nil); err != nil {
		log.Fatal(err)
	}
}