multer-ali-oss's Introduction

multer-ali-oss

Streaming multer storage engine for Aliyun OSS.

Installation

npm install --save multer-ali-oss

Usage

var multer  = require('multer');
var aliOssStorage = require('multer-ali-oss');

var upload = multer( {
  storage: aliOssStorage({
    config: {
      region: '<region>',
      accessKeyId: '<accessKeyId>',
      accessKeySecret: '<accessKeySecret>',
      bucket: '<bucket>',
    },
    filename: function (req, file, cb) {
      cb(null, file.fieldname + '-' + Date.now())
    }
  })
}).single('upload');

router.post('/', function(req, res, next) {
  upload(req, res, function (err) {
    if (err) {
      // handle error
    }

    var result = {
      "uploaded": 1,
      'name': req.file.name,
      "url": req.file.url
    };

    res.render('result', {});
  });
});

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.

var aliOssStorage = require('multer-ali-oss');
var storage = aliOssStorage({
  config: {
    region: '<region>',
    accessKeyId: '<accessKeyId>',
    accessKeySecret: '<accessKeySecret>',
    bucket: '<bucket>',
  },
  filename: function (req, file, cb) {
    cb(null, file.fieldname + '-' + Date.now())
  }
})

var 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.

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