[golang] mux사용

package main

import (
	"fmt"
	"net/http"
)

type fooHandler struct{}

func (f *fooHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	fmt.Fprint(w, "Hello Foo!")
}

func barHandler(w http.ResponseWriter, r *http.Request) {
	name := r.URL.Query().Get("name")
	if name == "" {
		name = "World"
	}
	fmt.Fprintf(w, "Hello %s!", name)
}

func main() {
	mux := http.NewServeMux()
	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		fmt.Fprint(w, "Hello world")
	})
	mux.HandleFunc("/bar", barHandler)
	mux.Handle("/foo", &fooHandler{})
	http.ListenAndServe(":3000", mux)
}

mux :: 동적 라우터를 사용하기 위해 설정