55. 上传文件（Web版） | 厚土Go学习笔记

实现一个简单的页面上传文件功能。

单机测试，上传1G以上的MP4电影也没问题。如果是internet环境，你测试一下告我好了。呵呵！

/**
* MyFileUpload01
* @Author:  Jian Junbo
* @Email:   junbojian@qq.com
* @Create:  2017/9/17 15:14
* Copyright (c) 2017 Jian Junbo All rights reserved.
*
* Description:  简单的上传文件
*/
package main

import (
    "net/http"
    "fmt"
    "os"
    "io"
    "time"
    "path"
    "strconv"
)

func main() {
    http.HandleFunc("/", index)
    http.HandleFunc("/upload2", upload)
    err := http.ListenAndServe(":7373", nil)
    if err != nil{
        fmt.Println("服务器启动失败",err.Error())
        return
    }

}
func upload(writer http.ResponseWriter, request *http.Request) {
    request.ParseMultipartForm(32<<20)
    //接收客户端传来的文件 uploadfile 与客户端保持一致
    file, handler, err := request.FormFile("uploadfile")
    if err != nil{
        fmt.Println(err)
        return
    }
    defer file.Close()
    //上传的文件保存在ppp路径下
    ext := path.Ext(handler.Filename)       //获取文件后缀
    fileNewName := string(time.Now().Format("20060102150405"))+strconv.Itoa(time.Now().Nanosecond())+ext

    f, err := os.OpenFile("./ppp/"+fileNewName, os.O_WRONLY|os.O_CREATE, 0666)
    if err != nil{
        fmt.Println(err)
        return
    }
    defer f.Close()

    io.Copy(f, file)

    fmt.Fprintln(writer, "upload ok!"+fileNewName)
}

func index(writer http.ResponseWriter, request *http.Request) {
    writer.Write([]byte(tpl))
}

const tpl = `<html>
<head>
<title>上传文件</title>
</head>
<body>
<form enctype="multipart/form-data" action="/upload2" method="post">
<input type="file" name="uploadfile">
<input type="hidden" name="token" value="{...{.}...}">
<input type="submit" value="upload">
</form>
</body>
</html>
`