GO语言实现文件上传

        //从网页获取文件

        file, head, err := r.FormFile("file")

        if err != nil {
            fmt.Println(err)
            return
        }
        defer file.Close()
        //创建文件
        fW, err := os.Create(upload_path + head.Filename)
        if err != nil {
            fmt.Println("文件创建失败")
            return
        }
        defer fW.Close()
        _, err = io.Copy(fW, file)
        if err != nil {
            fmt.Println("文件保存失败")
            return
        }
        //io.WriteString(w, head.Filename+" 保存成功")
        http.Redirect(w, r, "/hello", http.StatusFound)
        //io.WriteString(w, head.Filename)