node - 上传文件并且修改名称

html

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 
 4 <head>
 5     <meta charset="UTF-8">
 6     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 7     <meta http-equiv="X-UA-Compatible" content="ie=edge">
 8     <title>Document</title>
 9 </head>
10 
11 <body>
12     <form action="http://127.0.0.1/dopost" enctype="multipart/form-data" method="POST">
13         姓名:<input type="text" name="name"> 性别:
14         <input type="radio" name="gender" value="男"><input type="radio" name="gender" value="女">女 年龄:
15         <input type="number" name="age"> 图片:
16         <input type="file" name="img">
17         <input type="submit" value="提交">
18     </form>
19 </body>
20 
21 </html>

 

js

 

 1 const http = require('http');
 2 const formidable = require('formidable');
 3 const util = require('util');
 4 const fs = require('fs');
 5 const path = require('path');
 6 
 7 
 8 //创建服务器
 9 const server = http.createServer(function (req, res) {
10     if (req.url == '/dopost' && req.method.toLowerCase() == 'post') {
11         // 插件- 请搜索:https://www.npmjs.com/package/formidable
12         let form = new formidable.IncomingForm();
13 
14         //设置文件上传存放地址
15         form.uploadDir = './uploads';
16         // 设置文件上传大小(默认20M)
17         form.maxFileSize = 200 * 1024 * 1024;
18         //执行里面的回调函数的时候,表单已经全部接收完毕了。
19         form.parse(req, function (err, fields, files) {
20             // 时间戳
21             let timestamps = Math.round(new Date().getTime() / 1000).toString();
22             // 扩展名
23             let extname = path.extname(files.img.name);
24             // 旧路径
25             let oldPath = __dirname + '/' + files.img.path;
26             // 老文件名
27             let oldFileName = files.img.name;
28             // 新路径(默认无扩展名,需要引入path里面的得到extname得到)
29             let newPath = __dirname + '/uploads/' + getDate() + timestamps + extname;
30             // 新文件名
31             let newFileName = getDate() + random + extname;
32 
33             //改名api - http://nodejs.cn/api/fs.html#fs_fs_rename_oldpath_newpath_callback
34             fs.rename(oldPath, newPath, function (err) {
35                 if (err) throw Error('修改文件名失败!~');
36                 console.log('修改前的文件名:', oldFileName, '修改后的文件名:', newFileName);
37                 res.writeHead(200, { 'content-type': 'text/plain' });
38                 res.end('成功!~');
39             });
40         });
41     }
42 });
43 
44 
45 // 日期方法.
46 function getDate() {
47     let date = new Date();
48     let year = date.getFullYear();
49     let month = date.getMonth() + 1;
50     let day = date.getDate();
51     return year + '-' + month + '-' + day + '-'
52 }
53 
54 server.listen(80, '127.0.0.1');

 

posted @ 2018-08-06 16:59  Sunsin  阅读(1371)  评论(0编辑  收藏  举报