随机生成信用卡卡号代码,Java代码库,德仔网

代码语言
代码分类
【Java】随机生成信用卡卡号
作者:Hugh / 发布于2014/1/28/ 539
import java.util.List;
import java.util.Stack;
import java.util.Vector;

/**
* See the license below. Obviously, this is not a Javascript credit card number
* generator. However, The following class is a port of a Javascript credit card
* number generator.
*
* @author robweber
*
*/
public class RandomCreditCardNumberGenerator {
  /*
  * Javascript credit card number generator Copyright (C) 2006-2012 Graham King
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
  * Free Software Foundation; either version 2 of the License, or (at your
  * option) any later version.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
  * Public License for more details.
  *
  * You should have received a copy of the GNU General Public License along
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  *
  * www.darkcoding.net
  */

  public static final String[] VISA_PREFIX_LIST = new String[] { "4539",
      "4556", "4916", "4532", "4929", "40240071", "4485", "4716", "4" };

  public static final String[] MASTERCARD_PREFIX_LIST = new String[] { "51",
      "52", "53", "54", "55" };

  public static final String[] AMEX_PREFIX_LIST = new String[] { "34", "37" };

  public static final String[] DISCOVER_PREFIX_LIST = new String[] { "6011" };

  public static final String[] DINERS_PREFIX_LIST = new String[] { "300",
      "301", "302", "303", "36", "38" };

  public static final String[] ENROUTE_PREFIX_LIST = new String[] { "2014",
      "2149" };

  public static final String[] JCB_PREFIX_LIST = new String[] { "35" };

  public static final String[] VOYAGER_PREFIX_LIST = new String[] { "8699" };

  static String strrev(String str) {
    if (str == null)
      return "";
    String revstr = "";
    for (int i = str.length() - 1; i >= 0; i--) {
      revstr += str.charAt(i);
    }

    return revstr;
  }

  /*
  * 'prefix' is the start of the CC number as a string, any number of digits.
  * 'length' is the length of the CC number to generate. Typically 13 or 16
  */
  static String completed_number(String prefix, int length) {

    String ccnumber = prefix;

    // generate digits

    while (ccnumber.length() < (length - 1)) {
      ccnumber += new Double(Math.floor(Math.random() * 10)).intValue();
    }

    // reverse number and convert to int

    String reversedCCnumberString = strrev(ccnumber);

    List<Integer> reversedCCnumberList = new Vector<Integer>();
    for (int i = 0; i < reversedCCnumberString.length(); i++) {
      reversedCCnumberList.add(new Integer(String
          .valueOf(reversedCCnumberString.charAt(i))));
    }

    // calculate sum

    int sum = 0;
    int pos = 0;

    Integer[] reversedCCnumber = reversedCCnumberList
        .toArray(new Integer[reversedCCnumberList.size()]);
    while (pos < length - 1) {

      int odd = reversedCCnumber[pos] * 2;
      if (odd > 9) {
        odd -= 9;
      }

      sum += odd;

      if (pos != (length - 2)) {
        sum += reversedCCnumber[pos + 1];
      }
      pos += 2;
    }

    // calculate check digit

    int checkdigit = new Double(
        ((Math.floor(sum / 10) + 1) * 10 - sum) % 10).intValue();
    ccnumber += checkdigit;

    return ccnumber;

  }

  public static String[] credit_card_number(String[] prefixList, int length,
      int howMany) {

    Stack<String> result = new Stack<String>();
    for (int i = 0; i < howMany; i++) {
      int randomArrayIndex = (int) Math.floor(Math.random()
          * prefixList.length);
      String ccnumber = prefixList[randomArrayIndex];
      result.push(completed_number(ccnumber, length));
    }

    return result.toArray(new String[result.size()]);
  }

  public static String[] generateMasterCardNumbers(int howMany) {
    return credit_card_number(MASTERCARD_PREFIX_LIST, 16, howMany);
  }

  public static String generateMasterCardNumber() {
    return credit_card_number(MASTERCARD_PREFIX_LIST, 16, 1)[0];
  }

  public static boolean isValidCreditCardNumber(String creditCardNumber) {
    boolean isValid = false;

    try {
      String reversedNumber = new StringBuffer(creditCardNumber)
          .reverse().toString();
      int mod10Count = 0;
      for (int i = 0; i < reversedNumber.length(); i++) {
        int augend = Integer.parseInt(String.valueOf(reversedNumber
            .charAt(i)));
        if (((i + 1) % 2) == 0) {
          String productString = String.valueOf(augend * 2);
          augend = 0;
          for (int j = 0; j < productString.length(); j++) {
            augend += Integer.parseInt(String.valueOf(productString
                .charAt(j)));
          }
        }

        mod10Count += augend;
      }

      if ((mod10Count % 10) == 0) {
        isValid = true;
      }
    } catch (NumberFormatException e) {
    }

    return isValid;
  }

  public static void main(String[] args) {
    int howMany = 0;
    try {
      howMany = Integer.parseInt(args[0]);
    } catch (Exception e) {
      System.err
          .println("Usage error. You need to supply a numeric argument (ex: 500000)");
    }
    String[] creditcardnumbers = generateMasterCardNumbers(howMany);
    for (int i = 0; i < creditcardnumbers.length; i++) {
      System.out.println(creditcardnumbers[i]
          + ":"
          + (isValidCreditCardNumber(creditcardnumbers[i]) ? "valid"
              : "invalid"));
    }
  }
}
试试其它关键字
　信用卡卡号　
同语言下
可能有用的
Hugh贡献的其它代码(4)