package com.shopping.test;import java.util.List;import java.util.Stack;import java.util.Vector;/** * 随机生成仿信用卡的会员号 * 20190819 */public class RandomCreditCardNumberGenerator { 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; } /** * 生成卡号 * @param prefix 前缀 * @param length 卡号长度 13或者16位 */ static String completed_number(String prefix, int length) { String ccnumber = prefix; while (ccnumber.length() < (length - 1)) { ccnumber += new Double(Math.floor(Math.random() * 10)).intValue(); } 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)))); } 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; } int checkdigit = new Double( ((Math.floor(sum / 10) + 1) * 10 - sum) % 10).intValue(); ccnumber += checkdigit; return ccnumber; } /** * 信用卡号码 * @param prefixList 前缀的数无辜的蜻蜓 @param length 长度 * @param howMany 数量 * @return */ 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()]); } /** * 生成一个卡号的数无辜的蜻蜓 @param howMany 卡号的数量 * @return String[] 数无辜的蜻蜓/ 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 = 500; String[] creditcardnumbers = generateMasterCardNumbers(howMany); for (int i = 0; i < creditcardnumbers.length; i++) { System.out.println(creditcardnumbers[i]); } }}