Go language to realize static server

Study Go Language Some feelings of , Not necessarily accurate . In case of war ,JAVA It usually acts as an aircraft carrier battle group .   Once out , It's the frigate 、 cruiser 、 Carrier based aircraft 、 Awacs... 、 EW aircraft 、 Submarines and so on   The majestic , Kill will pass .  (JVM, Dozens of JAR package ,Tomcat middleware ,SSH frame , Various configuration files ... Born to be a heavyweight , Designed for large-scale operations ) and GO Language is more like F35 Fighter bomber   single-handed , quietly , Drop the bomb and leave .   Exclusive bomber , Air combat will also be a little .   I'm not sure , Just call it big brother F22.  (GO It's a compiled language , Don't rely on , No virtual machine required , You can call C Code and it's simple enough , But very comprehensive ) plan Go Language What to learn  1. build Http service  2. Connect to database  3. Local IO  4. Multithreading  5. The Internet  6. Call the local command  7. call C The language code First , Build a static The server I like to write programs using HTML adopt AJAX send out JSON Request to back-end processing . HttpServer.go package main

import (

        "flag"

        "io/ioutil"

        "log"

        "net/http"

        "os"

        "strings"

)

var realPath *string

func staticResource(w http.ResponseWriter, r *http.Request) {

        path := r.URL.Path

        request_type := path[strings.LastIndex(path, "."):]

        switch request_type {

        case ".css":

                w.Header().Set("content-type", "text/css")

        case ".js":

                w.Header().Set("content-type", "text/javascript")

        default:

        }

        fin, err := os.Open(*realPath + path)

        defer fin.Close()

        if err != nil {

                log.Fatal("static resource:", err)

        }

        fd, _ := ioutil.ReadAll(fin)

        w.Write(fd)

}

func main() {

        realPath = flag.String("path", "", "static resource path")

        flag.Parse()

        http.HandleFunc("/", staticResource)

        err := http.ListenAndServe(":8080", nil)

        if err != nil {

                log.Fatal("ListenAndServe:", err)

        }

} See a more BT Methods ..

package main

import (

        "net/http"

)

 func main() {

        http.Handle("/", http.FileServer(http.Dir("/tmp/static/")))

        http.ListenAndServe(":8080", nil)

} take EasyUI Unzip the front-end framework to /tmp/static Under the table of contents

stay GOPATH perform  go run HttpServer.go --path=/tmp/static View the web page , Everything is all right .

such Go Language In less than 50 Line code , Less than after compilation 7M The executable of , A simple Static servers .