httpserver.go 

package main

import "net/http"
// 3.处理函数用来接收和输入
func handler(w http.ResponseWriter,r *http.Request)  {
    w.Write([]byte("hello go httpserver"))
}
func main() {
    // 1.注册处理函数
    http.HandleFunc("/",handler)
    //2.绑定服务器地址结构
    
    http.ListenAndServe("127.0.0.1:8888",nil)
}

直接运行
go run httpserver.go 

编译
go build httpserver.go 

运行
./httpserver 

http://127.0.0.1:8888/

-rwxr-xr-x   1 dyyx  dyyx  7299748  8 21 18:03 httpserver
-rw-r--r--   1 dyyx  dyyx      335  8 21 18:02 httpserver.go