upload.go
package mainimport ("crypto/md5""fmt""html/template""io""log""net/http""os""strconv""time")// 處理/upload 邏輯func upload(w http.ResponseWriter, r *http.Request) {fmt.Println("method:", r.Method) //擷取請求的方法if r.Method == "GET" {crutime := time.Now().Unix()h := md5.New()io.WriteString(h, strconv.FormatInt(crutime, 10))token := fmt.Sprintf("%x", h.Sum(nil))t, _ := template.ParseFiles("upload.gtpl")t.Execute(w, token)} else {r.ParseMultipartForm(32 << 20)file, handler, err := r.FormFile("uploadfile")if err != nil {fmt.Println(err)return}defer file.Close()fmt.Fprintf(w, "%v", handler.Header)f, err := os.OpenFile("./upload/"+handler.Filename, os.O_WRONLY|os.O_CREATE, 0666) // 此處假設目前的目錄下已存在upload目錄if err != nil {fmt.Println(err)return}defer f.Close()io.Copy(f, file)}}func main() {http.HandleFunc("/upload", upload)//設定訪問的路由err := http.ListenAndServe(":9090", nil) //設定監聽的連接埠if err != nil {log.Fatal("ListenAndServe: ", err)}}upload.gtpl
<html><head> <title>上傳檔案</title></head><body><form enctype="multipart/form-data" action="/upload" method="post"> <input type="file" name="uploadfile" /> <input type="hidden" name="token" value="{{.}}"/> <input type="submit" value="upload" /></form></body></html>
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