身份证验证

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身份证验证

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原网上摘录的验证不正确，故在此更正并做了15位与18位身份证兼容。关键验证了字符、出生日期与尾数。

javascript版本：

    function isIdCard(arrIdCard){
        //支持15/18位身份证验证
        var IdCard=arrIdCard.toString().toUpperCase();
        if(!/^\d{17}(\d|X)$/i.test(IdCard)&&!/^\d{15}$/i.test(IdCard)){
            return false;
        }
        var birth;
        if(IdCard.length==18){
            var sigma = 0;
            var a = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 );
            var w = new Array("1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2");
            for (var i = 0; i < 17; i++) {
                sigma += parseInt(IdCard.substring(i, i + 1)) * a[i];
            }
            if (IdCard.substring(17) != w[sigma % 11]) {
                return  false;
            }
            birth=IdCard.substring(6, 10)+"/"+IdCard.substring(10, 12)+"/"+IdCard.substring(12, 14);
        }else{
            birth="19"+IdCard.substring(6, 8)+"/"+IdCard.substring(8, 10)+"/"+IdCard.substring(10, 12);
        }
        var date=new Date(birth);
        var getDate=date.getFullYear()+"/"+("0"+(date.getMonth()+1)).slice(-2)+"/"+("0"+date.getDate()).slice(-2);
        return getDate==birth;
    }

推荐另一种方法：

    var checkCardId = function (card) {
        card=card+"";//比toString()好使;
        if(!/^((1[1-5]|2[1-3]|3[1-7]|4[1-6]|5[0-4]|6[1-5])[0-9]{4})(([1|2][0-9]{3}[0|1][0-9][0-3][0-9][0-9]{3}[X0-9])|([0-9]{2}[0|1][0-9][0-3][0-9][0-9]{3}))$/i.test(card)){
            return false;
        }
        var j = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
        var k = ['1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'];
        var n= 0,i;
        if (15==card.length){ //15位自动转18位
            card = card.substring(0, 6) + '19' + card.substring(6);
            for (i = 0; i < 17; i++) {
                n += j[i]*card.substring(i, i+1);
            }
            card += k[n % 11];
        }
        var b=card.substring(6, 10)+"/"+card.substring(10, 12)+"/"+card.substring(12, 14);
        var t=new Date(b);
        var d=t.getFullYear()+"/"+("0"+(t.getMonth()+1)).slice(-2)+"/"+("0"+t.getDate()).slice(-2);
        n=0;
        for (i = 0; i < 17; i++) {
            n += j[i] * card.substring(i,i+1);
        }
        var l=isNaN(card.slice(-1))?"X":card.slice(-1);
        return l==k[n % 11]&&d==b;
    };

java版本：

public static boolean isIdCard1(String arrIdCard){
        //支持15/18位身份证验证
        String idCard= arrIdCard.toUpperCase();
        String test1 = "[0-9]{17}([0-9]|X)";
        String test2 = "[0-9]{15}";
        Pattern pattern1 = Pattern.compile(test1);
        Pattern pattern2 = Pattern.compile(test2);
        Matcher isNum1 = pattern1.matcher(idCard);
        Matcher isNum2 = pattern2.matcher(idCard);
        if(!isNum1.matches() && !isNum2.matches()){
            return false;
        }
        String birth;
        if(idCard.length() == 18){
            int sigma = 0;
            Integer[] a = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 };
            String[] w = { "1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2" };
            for (int i = 0; i < 17; i++) {
                int ai = Integer.parseInt(idCard.substring(i, i + 1));
                int wi = a[i];
                sigma += ai * wi;
            }
            int number = sigma % 11;
            String check_number = w[number];
            if (!idCard.substring(17).equals(check_number)) {
                return false;
            }
            birth = idCard.substring(6, 10)+"-"+idCard.substring(10, 12)+"-"+idCard.substring(12, 14);
         }else{
            birth="19"+idCard.substring(6, 8)+"-"+idCard.substring(8, 10)+"-"+idCard.substring(10, 12);
        }
        Date birDate = Utils.convert(birth);
        String birStr2 = (birDate.getYear()+1900)+"-"+(birDate.getMonth()+1)+"-"+birDate.getDate();
        if(!birth.equals(birStr2)){
            return false;
        }else {
            return true;
        }
    }

======================== 18位身份证检测

function checkCardId(card) {
    card = card.toString().toUpperCase();
    var arr = card.match(/^\d{6}(\d{4})(\d{2})(\d{2})\d{3}([X0-9])$/);
    if(!arr) return false;
    var j = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
    var k = ['1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'];
    var t = new Date(arr[1] +"/"+ arr[2] +"/"+ arr[3]);
    t = t.getMonth() + 1 == arr[2] && t.getDate() == arr[3];
    for (var i = 0,n = 0; i < 17; i++) {
        n += j[i] * card.substring(i,i+1);
    }
    return t && arr[4] == k[n % 11];
}