app.post(APIpath + "file",function(req,res){
    var storage = multer.diskStorage({
        destination: function (req, file, cb) {
            cb(null, absoluteServePath+ "/" + config.filePath)
        },
        filename: function (req, file, cb) {
            crypto.pseudoRandomBytes(16, function (err, raw) {
                cb(null, raw.toString('hex') + Date.now() + '.' + mime.lookup(file.mimetype));
            });
        }
    });
    var upload = multer({ storage : storage}).single('userFile');

filename: function (req, file, cb) {
    cb(null, file.originalname);
}