Java令牌產生器

標籤：val   uri   digest   sage   roc   ken   資料   hal   void   

原文：http://www.cnblogs.com/visec479/p/4013854.html

 

package Token;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Random;import Decoder.BASE64Encoder;//令牌生產器public class TokenProcessor {    private TokenProcessor(){}    private static TokenProcessor instance = new TokenProcessor();    public static TokenProcessor getInstance(){        return instance;    }    public String generateTokeCode(){        String value = System.currentTimeMillis()+new Random().nextInt()+"";        System.out.println(value);                         long currentTime = System.currentTimeMillis();        SimpleDateFormat formatter = new SimpleDateFormat("yyyy年-MM月dd日-HH時mm分ss秒");        Date date = new Date(currentTime);        System.out.println(formatter.format(date));                //擷取資料指紋，指紋是唯一的        try {            MessageDigest md = MessageDigest.getInstance("md5");            byte[] b = md.digest(value.getBytes());//產生資料的指紋            //Base64編碼            BASE64Encoder be = new BASE64Encoder();            be.encode(b);            System.out.println(be.encode(b));             return be.encode(b);//制定一個編碼        } catch (NoSuchAlgorithmException e){            e.printStackTrace();        }        return null;    }    public static void main(String[] args) {        TokenProcessor processor=new TokenProcessor();        processor.generateTokeCode();    }}

 

Java令牌產生器