适用于java的信用卡验证器

Question

我需要进行信用卡号码验证.

当我用Google搜索时,我找到了org.apache.commons.validator.CreditCardValidator.但似乎它无法正常工作.当我传递一个非数字字符时,它也是真实的.

Apache CreditCardValidator的代码:

String ccNumber = "378282246310005";
CreditCardValidator creditCardValidator = new CreditCardValidator();
if(!creditCardValidator.isValid(ccNumber)) throw new Exception("Credit Card Number is not a valid one!");

然后,我根据卡片类型和卡号(使用luhn算法)编写了以下方法来验证信用卡号码.

CardType验证器(如果卡类型无效,则为null)

public String getCCType(String ccNumber){

        String visaRegex        = "^4[0-9]{12}(?:[0-9]{3})?$";
        String masterRegex      = "^5[1-5][0-9]{14}$";
        String amexRegex        = "^3[47][0-9]{13}$";
        String dinersClubrRegex = "^3(?:0[0-5]|[68][0-9])[0-9]{11}$";
        String discoverRegex    = "^6(?:011|5[0-9]{2})[0-9]{12}$";
        String jcbRegex         = "^(?:2131|1800|35\\d{3})\\d{11}$";
        String commonRegex      = "^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\\d{3})\\d{11})$";

        try {
            ccNumber = ccNumber.replaceAll("\\D", "");
            return (ccNumber.matches(visaRegex) ? "VISA" : ccNumber.matches(masterRegex) ? "MASTER" :ccNumber.matches(amexRegex) ? "AMEX" :ccNumber.matches(dinersClubrRegex) ? "DINER" :ccNumber.matches(discoverRegex) ? "DISCOVER"  :ccNumber.matches(jcbRegex) ? "JCB":null);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

使用Luhn's algorithem的CardNumber验证器.

public boolean isValidCardNumber(String ccNumber){

        try {
            ccNumber = ccNumber.replaceAll("\\D", "");
            char[]      ccNumberArry    = ccNumber.toCharArray();

            int         checkSum        = 0;
            for(int i = ccNumberArry.length - 1; i >= 0; i--){

                char            ccDigit     = ccNumberArry[i];

                if((ccNumberArry.length - i) % 2 == 0){
                    int doubleddDigit = Character.getNumericValue(ccDigit) * 2;
                    checkSum    += (doubleddDigit % 9 == 0 && doubleddDigit != 0) ? 9 : doubleddDigit % 9;

                }else{
                    checkSum    += Character.getNumericValue(ccDigit);
                }

            }

            return (checkSum != 0 && checkSum % 10 == 0);

        } catch (Exception e) {

            e.printStackTrace();

        }

        return false;
    }

我想知道,

1. 除了org.apache之外,是否还有其他第三方来验证信用卡？
2. 我的代码有什么问题吗？(我测试了好几次.到目前为止一直都很好.我只是想知道你是否能发现我没有发现过的东西.)

参考: 如何根据号码检测信用卡类型？

Answer 1

您可以在这里找到信用卡验证器的自定义植入，它既进行信用卡号验证又进行信用卡类型检测，

http://www.esupu.com/credit-card-validator-java/