nodejs express 上传文件自定义文件名和上传路径

<form action="http://localhost:3000/profile" method="post" enctype="multipart/form-data">
<input type="file" name="avatar" />
<input type="submit" value="av2tar" />
</form>

//假设你的express 服务器已经跑起来了var express = require('express');
const fs = require('fs');
const path = require('path');
var controllers = path.join(path.resolve(__dirname, '..'), 'controllers');
var uploadDir = path.join(path.resolve(__dirname, 'uploads'));
var router = express.Router();
var multer = require('multer');
var storage = multer.diskStorage({
destination: function (req, file, cb) {
cb(null, './uploads') //自己定义目录
},
filename: function (req, file, cb) {
console.log(file)
cb(null, file.originalname + '-' + Date.now())
/*
{
fieldname: 'avatar',
originalname: 'flink-1.8.0-bin-scala_2.12.tgz',
encoding: '7bit',
mimetype: 'application/gzip'
}
*/
}
})var upload = multer({ storage: storage })/* GET users listing. */
router.post('/', upload.single('avatar'), function(req, res, next) {
res.send('Upload success...');});
module.exports = router;
官网网站：https://www.npmjs.com/package/multer