100 line GOLNG code write a static file server

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Always talk about Golang standard library, not only people look bored, I write their own are more uncomfortable, so write a simple static file server, there is upload download, and simple HTML, you can according to your own needs to modify ~ ~

Include Features

1. Static file Templates
2. File Upload
3. File View and download

The packages used

import (    "fmt"    "html/template"    "io"    "net/http"    "os"    "path/filepath"    "regexp"    "strconv"    "time")

Include Knowledge points

//静态文件服务器http.FileServer(http.Dir("目录"))//手工配置服务和路由s := &http.Server{    Addr:           ":8080",    Handler:        myHandler,    ReadTimeout:    10 * time.Second,    WriteTimeout:   10 * time.Second,    MaxHeaderBytes: 1 << 20,}s.ListenAndServe();// path/filepath包的使用

Very little, but there are a lot of basics to play with friends who learn Golang, code example address: Http://github.com/widuu/staticserver

Instance Code staticserver.go

Package Mainimport ("FMT" "html/template" "io" "net/http" "OS" "Path/filepath" "RegExp" "StrConv" "Time") var mux map[string]func (http. Responsewriter, *http. Request) type MyHandler struct{}type home struct {Title string}const (template_dir = "./view/" Upload_dir = ". /upload/") Func main () {server: = http. server{Addr: ": 9090", Handler: &myhandler{}, Readtimeout:10 * time. Second,} MUX = Make (Map[string]func (HTTP. Responsewriter, *http. Request)) mux["/"] = Index mux["/upload"] = upload mux["/file"] = Staticserver server. Listenandserve ()}func (*myhandler) servehttp (w http. Responsewriter, R *http. Request) {if h, OK: = Mux[r.url. String ()]; OK {h (W, R) return} If OK, _: = RegExp. Matchstring ("/css/", R.url. String ()); OK {http. Stripprefix ("/css/", http. Fileserver (http. Dir ("./css/"))). Servehttp (W, R)} else {http. Stripprefix ("/", HTTP. Fileserver (http. Dir ("./upload/")). Servehttp (W, R)}}func upload (w http. Responsewriter, R *http. Request) {if R.method = = "GET" {T, _: = template.         Parsefiles (Template_dir + "file.html") T.execute (w, "Upload file")} else {r.parsemultipartform (<< 20) File, handler, err: = R.formfile ("UploadFile") if err! = Nil {fmt. fprintf (W, "%v", "Upload Error") return} Fileext: = FilePath. EXT (handler. Filename) if check (fileext) = = False {fmt. fprintf (W, "%v", "Disallowed upload type") return} filename: = StrConv. Formatint (time. Now (). Unix (), ten) + Fileext F, _: = OS. OpenFile (Upload_dir+filename, OS. O_create|os. O_wronly, 0660) _, err = Io. Copy (f, file) if err! = Nil {fmt. fprintf (W, "%v", "Upload Failed") return} Filedir, _: = FilePath. Abs (upload_dir + filename) fmt. fprintf (W, "%v", filename+ "upload complete, server address:" +filedir)}}func Index (w http. Responsewriter, R *http. REquest) {title: = Home{title: "Home"} t, _: = template. Parsefiles (Template_dir + "index.html") T.execute (W, title)}func Staticserver (w http. Responsewriter, R *http. Request) {http. Stripprefix ("/file", http. Fileserver (http. Dir ("./upload/"))).        Servehttp (W, R)}func check (name string) BOOL {ext: = []string{". exe", ". js", ". png"} for _, V: = Range Ext { If v = = name {return False}} return true}

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