nodejs使用formidable上传多个文件

var form = new formidable.IncomingForm();
    form.uploadDir = configs.productPath;
    form.keepExtensions = true;
    var files = [];

    form.on(‘file‘, function (filed, file) {
        files.push([filed, file]);
    });//whenever a file is received, this will add the file info to the array

    form.parse(req, function (err, fields) {
        assert.equal(err, null);
//traverse the files here
        }
    });