go-examples/form-ex2/main.go
2017-07-27 19:59:43 +02:00

56 lines
1.0 KiB
Go

package main
import (
"fmt"
"html/template"
"io"
"log"
"net/http"
"os"
"path/filepath"
)
func handle(path string, handleFunc func(res http.ResponseWriter, req *http.Request) error) {
http.HandleFunc("/", func(res http.ResponseWriter, req *http.Request) {
err := handleFunc(res, req)
if err != nil {
log.Println(err)
http.Error(res, err.Error(), 500)
}
})
}
func handleForm(res http.ResponseWriter, req *http.Request) error {
tpl, err := template.ParseFiles("form.html")
if err != nil {
return err
}
var msg string
if req.Method == http.MethodPost {
file, header, err := req.FormFile("file")
if err != nil {
return err
}
defer file.Close()
tmpFile, err := os.Create(filepath.Join(os.TempDir(), header.Filename))
if err != nil {
return err
}
defer tmpFile.Close()
sz, err := io.Copy(tmpFile, file)
if err != nil {
return err
}
msg = fmt.Sprintf("File uploaded (%d bytes)", sz)
}
tpl.Execute(res, msg)
return nil
}
func main() {
handle("/", handleForm)
http.ListenAndServe(":9000", nil)
}