Cookies的使用

public String toString(){    SimpleDateFormat formatter = new SimpleDateFormat("MMddHHmmssSSS");    String time = formatter.format( new Date());       serial++;       if(serial>999)          serial = 0;       int random=(int)(Math.random()*10000);       return time+ formatSting(serial+ "", 3, '0')+              formatString(random+ "", 4, '0');}

数据库中的一条记录

id sitename sid ip qstring user createtime back host
1880963 youxi 0325151720458269638 218.206.252.66 p=youxi null 2011-03-25 15:19:16 null wap