Question

目前我有这个：

  var multipart = require('connect-multiparty');
var multipartMiddleware = multipart();

router.post('/registo',upload.single('file'), function (req, res) {

但是传递的文件的文件扩展名没有保存，并且multer给它一个随机名称，所以我看到这样的东西来纠正这个问题：

var storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, './uploads/')
  },
  filename: function (req, file, cb) {
    crypto.pseudoRandomBytes(16, function (err, raw) {
      cb(null, raw.toString('hex') + Date.now() + '.' + mime.extension(file.mimetype));
    });
  }
});

var upload = multer({ storage: storage });



router.post('/registo',upload, function (req, res) {

但是我得到了一个错误：连接被拒绝，我不知道为什么会发生这种情况

Answer 1

我如何使用multer上传文件。节点代码

var multer = require('multer');
var fs = require('fs');
var Grid = require('gridfs-stream');
var router = express.Router();
var upload = multer({dest: 'uploads/'});


mongoose.createConnection('mongodb://127.0.0.1/obi');
router.post('/upload', upload.any(), function (req, res) {
    var conn = mongoose.connection;
    var Grid = require('gridfs-stream');
    Grid.mongo = mongoose.mongo;
    var path = req.files[0].path
    var path_name = req.files[0].originalname
    var gfs = Grid(conn.db);
    var writestream = gfs.createWriteStream({
        filename: path_name
    });
    fs.createReadStream(path).pipe(writestream);
    writestream.on('close', function (file) {
        res.json(file.filename + 'Written To DB');
        fs.unlink(req.files[0].path, function () {
            res.json({id: file._id, message: "success"});
        });
    });
})

希望这适合你。

没有扩展名的multer文件

1 个答案: