IP 地址 + 时间 = 生成文件名
package com.zhanggaosong.utils;
import java.text.SimpleDateFormat ;
import java.util.Date ;
import java.util.Random ;
public class IPTimeStamp {
private SimpleDateFormat sdf = null ;
private String ip = null ;
public IPTimeStamp(){
}
public IPTimeStamp(String ip){
this.ip = ip ;
}
public String getIPTimeRand(){
StringBuffer buf = new StringBuffer() ;
if(this.ip != null){
String s[] = this.ip.split("\.") ;
for(int i=0;i<s.length;i++){
buf.append(this.addZero(s[i],3)) ;
}
}
buf.append(this.getTimeStamp()) ;
Random r = new Random() ;
for(int i=0;i<3;i++){
buf.append(r.nextInt(10)) ;
}
return buf.toString() ;
}
public String getDate(){
this.sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS") ;
return this.sdf.format(new Date()) ;
}
public String getTimeStamp(){
this.sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS") ;
return this.sdf.format(new Date()) ;
}
private String addZero(String str,int len){
StringBuffer s = new StringBuffer() ;
s.append(str) ;
while(s.length() < len){
s.insert(0,"0") ;
}
return s.toString() ;
}
public static void main(String args[]){
String ip = "192.168.1.1";
System.out.println(new IPTimeStamp(ip).getIPTimeRand()) ;
}
}