欢迎使用CSDN-markdown编辑器

    public static String getOrderNo(final String prefix) {        DateFormat df = new SimpleDateFormat("yyMMddHHmm");        String MI = "";        String last = "";        Date date = null;        synchronized (df) {            date = new Date();            Calendar CD = Calendar.getInstance();            MI = CD.get(Calendar.MILLISECOND) + "";            if (MI.length() < 3) {                Random random = new Random();                MI = (random.nextInt(999 - 100 + 1) + 100) + "";            }            Random random = new Random();            last = (random.nextInt(999 - 100 + 1) + 100) + "";        }        return prefix + df.format(date) + MI + last;    }