1 package info.haowei.util; 2  3 import java.text.SimpleDateFormat; 4 import java.util.Date; 5 import java.util.Random; 6  7 public class IPTimeStamp { 8  9     10     private SimpleDateFormat sdf = null;11     private String ip = null;12     13     14     public IPTimeStamp(String ip) {15         super();16     17         this.ip = ip;18     }19 20 21     public IPTimeStamp() {22         super();23     }24     25     26     public String getIPTimeRand(){27         StringBuffer buf = new StringBuffer();28         if(this.ip != null){29             String s[] = this.ip.split("\\.");//根据ip以点分割将IP中的数字提取30             for(int i = 0 ; i < s.length; i++){31                 buf.append(this.addZero(s[i], 3));//不够三位数的补零32             }33         }34         buf.append(this.getTimeStamp());35         Random r = new Random();//再在结尾加上三个随机数36         for(int i = 0 ; i < 3 ; i++ ){37             buf.append(r.nextInt(10));38         }39         return buf.toString();40     }41     42     private String addZero(String str, int len){43         44         StringBuffer s = new StringBuffer();45         s.append(str);46         while(s.length()<len){47             s.insert(0, 0);48         }49         50         return s.toString();51     }52     53     54     private String getTimeStamp(){//获取时间戳55         this.sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");56         return this.sdf.format(new Date());57     }58     59     public String getDate(){60         this.sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");61         return this.sdf.format(new Date());62     }63 }