go语言开发web 路由处理gorilla mux

package main

import (
   "fmt"
   "github.com/gorilla/mux"
   "net/http"
)

func main() {
   r := mux.NewRouter()
   //普通路由
   r.HandleFunc("/", indexHandler)
   r.HandleFunc("/admin", adminHandler)

   http.ListenAndServe(":8080", r)
}

func indexHandler(w http.ResponseWriter, r *http.Request) {
   w.WriteHeader(http.StatusOK)
   fmt.Fprintf(w, "<h1>首页</h1>")
}

func adminHandler(w http.ResponseWriter, r *http.Request) {
   w.WriteHeader(http.StatusOK)
   fmt.Fprintf(w, "<h1>后台</h1>")
}