实现一个简单的页面上传文件功能。

    1. /**
    2. * MyFileUpload01
    3. * @Author:  Jian Junbo
    4. * @Email:   junbojian@qq.com
    5. * @Create:  2017/9/17 15:14
    6. * Copyright (c) 2017 Jian Junbo All rights reserved.
    7. *
    8. * Description:  简单的上传文件
    9. */
    10. package main
    12. import (
    13.     "net/http"
    14.     "fmt"
    15.     "os"
    16.     "io"
    17.     "time"
    18.     "path"
    19.     "strconv"
    20. )
    22. func main() {
    23.     http.HandleFunc("/", index)
    24.     http.HandleFunc("/upload2", upload)
    25.     err := http.ListenAndServe(":7373", nil)
    26.     if err != nil{
    27.         fmt.Println("服务器启动失败",err.Error())
    28.         return
    29.     }
    31. }
    32. func upload(writer http.ResponseWriter, request *http.Request) {
    33.     request.ParseMultipartForm(32<<20)
    34.     //接收客户端传来的文件 uploadfile 与客户端保持一致
    35.     file, handler, err := request.FormFile("uploadfile")
    36.     if err != nil{
    37.         fmt.Println(err)
    38.         return
    39.     }
    40.     defer file.Close()
    41.     //上传的文件保存在ppp路径下
    42.     ext := path.Ext(handler.Filename)       //获取文件后缀
    43.     fileNewName := string(time.Now().Format("20060102150405"))+strconv.Itoa(time.Now().Nanosecond())+ext
    45.     f, err := os.OpenFile("./ppp/"+fileNewName, os.O_WRONLY|os.O_CREATE, 0666)
    46.     if err != nil{
    47.         fmt.Println(err)
    48.         return
    49.     }
    50.     defer f.Close()
    52.     io.Copy(f, file)
    54.     fmt.Fprintln(writer, "upload ok!"+fileNewName)
    55. }
    57. func index(writer http.ResponseWriter, request *http.Request) {
    58.     writer.Write([]byte(tpl))
    59. }
    61. const tpl = `<html>
    62. <head>
    63. <title>上传文件</title>
    64. </head>
    65. <body>
    66. <form enctype="multipart/form-data" action="/upload2" method="post">
    67. <input type="file" name="uploadfile">
    68. <input type="hidden" name="token" value="{...{.}...}">
    69. <input type="submit" value="upload">
    70. </form>
    71. </body>
    72. </html>`

    golang 上传文件(Web版) - 图1