package main

import (
	"net/http"
)

type Engine struct{}

func (engine *Engine) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	path := r.URL.Path
	switch path {
	case "/":
		_, _ = w.Write([]byte("Hello Go"))
	case "/gee":
		_, _ = w.Write([]byte("Gee!!!"))
	default:
		_, _ = w.Write([]byte("天啊, 404啦!!!!"))
	}
}

func main() {
	engine := new(Engine)
	http.ListenAndServe(":8000", engine)
}

//// 自定义ServeMux
//func main() {
//	mux := new(http.ServeMux)
//	mux.HandleFunc("/hello", func(writer http.ResponseWriter, request *http.Request) {
//		_, _ = writer.Write([]byte("Hello Go"))
//	})
//	_ = http.ListenAndServe(":8000", mux)
//}