上传文件自命名规则

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 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());

}
public String addZero(String str,int len){
StringBuffer s = new StringBuffer();
s.append(str);
while(s.length() s.insert(0, "0");
}
return s.toString();
}
public static void main(String [] args){
System.out.println(new IPTimeStamp("192.168.1.1").getIPTimeRand());





}
}