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Effective GoのWebServerをhtml/templateで http://golang.jp/effective_go#web_server
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| package main | |
| import ( | |
| "flag" | |
| "html/template" | |
| "log" | |
| "net/http" | |
| ) | |
| const ( | |
| tpl = ` | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>QR Link Generator</title> | |
| </head> | |
| <body> | |
| <img src="http://chart.apis.google.com/chart?chs=300x300&cht=qr&choe=UTF-8&chl={{.}}" /> | |
| <br> | |
| {{.}} | |
| <br> | |
| <br> | |
| <form action="/" name="f" method="GET"> | |
| <input maxLength="1024" size="70" name="s" value="" title="Text to QR Encode"> | |
| <input type="submit" value="Show QR" name="qr"> | |
| </form> | |
| </body> | |
| </html>` | |
| ) | |
| var ( | |
| addr = flag.String("addr", ":1718", "http service address") | |
| t = template.Must(template.New("master").Parse(tpl)) | |
| ) | |
| func QR(w http.ResponseWriter, req *http.Request) { | |
| t.Execute(w, req.FormValue("s")) | |
| } | |
| func check(err error) { | |
| if err != nil { | |
| log.Fatal(err) | |
| } | |
| } | |
| func main() { | |
| flag.Parse() | |
| http.HandleFunc("/", QR) | |
| err := http.ListenAndServe(*addr, nil) | |
| check(err) | |
| } |
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flag使う必要性なかった...