handle.go

package main

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

type simpleHandler struct{}

func (h *simpleHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	fmt.Fprint(w, "hello")
}

func main() {
	http.Handle("/count", new(simpleHandler))
	log.Fatal(http.ListenAndServe(":8080", nil))
}