multer-ali-oss

Streaming multer storage engine for Aliyun OSS.

Installation

1npm install --save multer-ali-oss

Usage

1var multer  = require('multer');
2var aliOssStorage = require('multer-ali-oss');
3
4var upload = multer( {
5  storage: aliOssStorage({
6    config: {
7      region: '<region>',
8      accessKeyId: '<accessKeyId>',
9      accessKeySecret: '<accessKeySecret>',
10      bucket: '<bucket>',
11    },
12    filename: function (req, file, cb) {
13      cb(null, file.fieldname + '-' + Date.now())
14    }
15  })
16}).single('upload');
17
18router.post('/', function(req, res, next) {
19  upload(req, res, function (err) {
20    if (err) {
21      // handle error
22    }
23
24    var result = {
25      "uploaded": 1,
26      'name': req.file.name,
27      "url": req.file.url
28    };
29
30    res.render('result', {});
31  });
32});

File information

Each file contains the following information:

Key	Description	Note
fieldname	Field name specified in the form
originalname	Name of the file on the user's computer
encoding	Encoding type of the file
mimetype	Mime type of the file
size	Size of the file in bytes
name	Name of the file	AliOssStorage
url	Url of the file on OSS	AliOssStorage

Notice

As the ali-oss, one of the dependencies, using the ES6 features. The app depends on this package should start with --harmony.

AliOssStorage

You need to specify the region, accessKeyId, accessKeySecret, bucket.

1var aliOssStorage = require('multer-ali-oss');
2var storage = aliOssStorage({
3  config: {
4    region: '<region>',
5    accessKeyId: '<accessKeyId>',
6    accessKeySecret: '<accessKeySecret>',
7    bucket: '<bucket>',
8  },
9  filename: function (req, file, cb) {
10    cb(null, file.fieldname + '-' + Date.now())
11  }
12})
13
14var upload = multer({ storage: storage })

There is one option available, filename. It is a function that determine where the file should be stored.

filename is used to determine what the file should be named. If no filename is given, each file will be given a random name that doesn't include any file extension.