生成时间id

public static void main(String[] args) {

    Date d = new Date();
    String s;

    java.text.DateFormat format2 = new java.text.SimpleDateFormat("yyyyMMdd");
    s = format2.format(new Date());
    long time = new Date().getTime();
    System.out.println("格式化时间："+time);
    String random = RandomStringUtils.randomNumeric(6);
    System.out.println("6为随机说："+random);
    System.out.println("id为："+s+time+random);


}