Simple go static file server sample

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1, the core is the need to get the absolute path of the file, OS. Open () required;

2, Windows uses "\" to indicate the path, and go needs "/" to represent the path, so you need to replace "\" with "/";

3, use the built-in HTTP. The Serverfile () function provides subsequent file transfer services;

Package Mainimport ("FMT" "Log" "Net/http" "OS" "Path/filepath" "strings") var Staticdir = "/static" func Getcurdir () string {dir, err: = FilePath. Abs (filepath. Dir (OS. Args[0])) if err! = Nil {log. Fatal (ERR)}return strings. Replace (dir, "\ \", "/",-1)}func Dealstaticfiles (w http). Responsewriter, R *http. Request) {stdir: = Getcurdir () if strings. Hasprefix (R.url. Path, Staticdir) {file: = Stdir + R.url. Pathfmt.println (file) F, err: = OS. Open (file) defer f.close () if err! = Nil && os. Isnotexist (Err) {FMT. Fprintln (W, "File not Exist") return}http. Servefile (W, R, file) return} else {fmt. Fprintln (W, "Hello World")}}func Main () {http. Handlefunc ("/", Dealstaticfiles)    //set access to the route err: = http. Listenandserve (": 8080", nil)//Set the listening port if err! = Nil {log. Fatal ("Listenandserve:", Err)}}