importjava.util.HashSet;importjava.util.Random;importjava.util.Set;public classGenSerial {private static final String Base32Alphabet = "ABCDEFGHJKLMNPQRSTUVWXYZ23456789";/*** 生成新的序列号

*

生成规则：45位的数 (二进制)

* 标识位 + 数据位 + 校验位

* 然后将55位的数映射到用 ABCDEFGHJKLMNPQRSTUVWXYZ23456789 表示的序列号，要映射到32个字符中就是每5位代表一个字符(2^5=32)，

* 所有生成的序列号是 45/5=9位。

*

*@paramcodeLen code长度

*@paramflag 标识

*@paramflagBitLen 标识长度

*@paramcheckBitLen 校验位长度

*@return

*/

public static String generateNewCode(int codeLen, int flag, int flagBitLen, intcheckBitLen) {

Long ret= 0L; //长整形ID

Random random = newRandom();int checkModData = 1< 0){

flag= flag & ((1<

ret += (long)flag << (totalBitLen - flagBitLen); //高位标志位

}

ret+= randData << checkBitLen; //中位数据位

long checkNum = (ret >> checkBitLen) % checkModData; //低位校验位

ret += checkNum; //1 - 7位 校验位

returnconvertToBase32SerialCode(ret, codeLen);

}public static String generateNewCode(int flag, intflagBitLen) {return generateNewCode(9, flag, flagBitLen, 7); //生成码9位，活动id 16位

}public static String generateNewCode(intflag) {int flagBitLen = 0;if(flag == 0){

flagBitLen= 0;

}else{

flagBitLen=Integer.toBinaryString(flag).length();

}return generateNewCode(9, flag, flagBitLen, 7); //生成码9位

}public staticString generateNewCode() {return generateNewCode(9, 0, 0, 7); //生成码9位

}/***

*@paramhistoryCodeSet 历史生成的序列号 集合

*@paramnumber

*@paramcodeLen

*@paramflag

*@paramflagBitLen

*@paramcheckBitLen

*@return

*/

public static Set generateCodes(Set historyCodeSet, int number, int codeLen, int flag, int flagBitLen, intcheckBitLen){

Set generatedCodes = new HashSet(number*4/3+1);if(historyCodeSet == null){

historyCodeSet= new HashSet(0);

}while(generatedCodes.size()

String code=generateNewCode(codeLen, flag, flagBitLen, checkBitLen);if(!historyCodeSet.contains(code)){

generatedCodes.add(code);

}

System.out.println(code);

}returngeneratedCodes;

}/***

*@paramhistoryCodeSet

*@paramnumber

*@return

*/

public static Set generateCodes(Set historyCodeSet, int number, intcodeLen){return generateCodes(historyCodeSet, number, codeLen, 0, 0, 7);

}/***

*@paramhistoryCodeSet

*@paramnumber

*@return

*/

public static Set generateCodes(Set historyCodeSet, intnumber){return generateCodes(historyCodeSet, number, 9, 0, 0, 7);

}/*** 将随机数转换成BASE32编码 序列码

*

*@return

*/

private static String convertToBase32SerialCode(long longRandValue, intcodeLen) {

StringBuffer codeSerial= new StringBuffer(16);long tmpRandValue =longRandValue;for (int i = 0; i < codeLen; i++) {int code = (int) (tmpRandValue & 0x1F);char convertCode =Base32Alphabet.charAt(code);

codeSerial.append(convertCode);

tmpRandValue= tmpRandValue >> 5;

}returncodeSerial.reverse().toString();

}/*** 将兑换码序列字符转化成数字。

*

*@return

*/

private static int convertBase32CharToNum(charch) {int index =Base32Alphabet.indexOf(ch);returnindex;

}/*** 将序列号转成长整数

*

*@return

*/

public static longconvertBase32CharToNum(String serialCode) {long id = 0;for (int i = 0; i < serialCode.length(); i++) {int originNum =convertBase32CharToNum(serialCode.charAt(i));if(originNum == -1){return 0;

}

id= id << 5;

id+=originNum;

}returnid;

}/*** 校验序列号是否合法

*

*@paramcode

*@return

*/

public static boolean checkCodeValid(String code, intcheckBitLen) {long id = 0;int checkModData = 1<= 32)return false; //字符非法

id = id<<5;

id+=originNum;

}long data = id >>checkBitLen;long checkNum = id & (checkModData-1); //最后7位是校验码

if (data % checkModData ==checkNum)return true;return false;

}public static booleancheckCodeValid(String code) {if(code == null || code.length() == 0){return false;

}return checkCodeValid(code, 7);

}/*** 从序列号提取标识

*

*@paramcode 序列号

*@paramflagBitLen 标识位长度

*@return

*/

public static Long getFlagFromCode(String code, intflagBitLen){long id =convertBase32CharToNum(code);return id >> (code.length()*5-flagBitLen);

}public static voidmain(String[] args) {

System.out.println(checkCodeValid("ARXX2BWTE"));long sTime =System.currentTimeMillis();long eTime = 0L;

Set codes = generateCodes(null, 1, 10, 3, 2, 7);

eTime=System.currentTimeMillis();

System.out.println("耗时 " + (eTime-sTime)/1000 + "秒");

sTime=eTime;

Set codes2 = generateCodes(codes, 2, 10, 0, 0, 7);

codes2.size();

eTime=System.currentTimeMillis();

System.out.println("耗时 " + (eTime-sTime)/1000 + "秒");

String code= generateNewCode(1,10);

System.out.println("序列号: "+code);boolean checkRs =checkCodeValid(code);

System.out.println("序列号" + code + "是否合法：" +checkRs);long acId = getFlagFromCode(code,10);long acId1=getFlagFromCode("5DJX9MXCJU",2);

System.out.println("标识: " +acId);

System.out.println("标识: " +acId1);long numCode =convertBase32CharToNum(code);

System.out.println("数字序列号 " +numCode);

}

}