Java令牌生成器

java

 1 package Token;

2 import java.security.MessageDigest;

3 import java.security.NoSuchAlgorithmException;

4 import java.text.SimpleDateFormat;

5 import java.util.Date;

6 import java.util.Random;

7 import Decoder.BASE64Encoder;

8

9 //令牌生产器

10 public class TokenProcessor {

11 private TokenProcessor(){}

12 private static TokenProcessor instance = new TokenProcessor();

13 public static TokenProcessor getInstance(){

14 return instance;

15 }

16 public String generateTokeCode(){

17 String value = System.currentTimeMillis()+new Random().nextInt()+"";

18 System.out.println(value);

19

20

21 long currentTime = System.currentTimeMillis();

22 SimpleDateFormat formatter = new SimpleDateFormat("yyyy年-MM月dd日-HH时mm分ss秒");

23 Date date = new Date(currentTime);

24 System.out.println(formatter.format(date));

25

26

27 //获取数据指纹,指纹是唯一的

28 try {

29 MessageDigest md = MessageDigest.getInstance("md5");

30 byte[] b = md.digest(value.getBytes());//产生数据的指纹

31 //Base64编码

32 BASE64Encoder be = new BASE64Encoder();

33 be.encode(b);

34 System.out.println(be.encode(b));

35 return be.encode(b);//制定一个编码

36 } catch (NoSuchAlgorithmException e){

37 e.printStackTrace();

38 }

39 return null;

40 }

41 public static void main(String[] args) {

42 TokenProcessor processor=new TokenProcessor();

43 processor.generateTokeCode();

44 }

45 }

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