Java实现身份证校验（包括校验码 地区 时间）

public class IdCardUtils {

    //身份证前1位每位加权因子
    private static int[] power = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2};
    //身份证第18位校检码
    private static String[] refNumber ={"1", "0", "X", "9", "8", "7", "6", "5", "4", "3"};
    //省(直辖市)代码表
    private static String provinceCode[] = { "11", "12", "13", "14", "15", "21", "22",
            "23", "31", "32", "33", "34", "35", "36", "37", "41", "42", "43",
            "44", "45", "46", "50", "51", "52", "53", "54", "61", "62", "63",
            "64", "65", "71", "81", "82", "91" };



    public static boolean checkIdCard(String idCard) {
     return checkCardIdLastNum(idCard) && (isValidDate(idCard.substring(6, 14))
             && (checkProvinceId(idCard.substring(0, 2)) && isCardId(idCard)));
    }



    public static boolean isCardId(String cardid){
        return Pattern.matches("^[1-9]\\d{5}[1-9]\\d{3}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])\\d{3}([\\d|x|X]{1})$", cardid);
    }
    /**
     * 检查身份证的省份信息是否正确（使用与18/15位身份证）
     * @param provinceId
     * @return
     */
    public static boolean checkProvinceId(String provinceId){
        for (String id : provinceCode) {
            if (id.equals(provinceId)) {
                return true;
            }
        }
        return false;
    }

    /**
     * 校验身份证第18位是否正确(只适合18位身份证)
     * @param cardId
     * @return
     */
    public static boolean checkCardIdLastNum(String cardId){
        if(cardId.length() != 18){
            return false;
        }
        char[] tmp = cardId.toCharArray();
        int[] cardidArray = new int[tmp.length-1];
        int i=0;
        for(i=0;i<tmp.length-1;i++){
            cardidArray[i] = Integer.parseInt(tmp[i]+"");
        }
        String checkCode = sumPower(cardidArray);
        String lastNum = tmp[tmp.length-1] + "";
        if(lastNum.equals("x")){
            lastNum = lastNum.toUpperCase();
        }
        if(!checkCode.equals(lastNum)){
            return false;
        }
        return true;
    }
    /**
     * 计算身份证的第十八位校验码
     * @param cardIdArray
     * @return
     */
    public static String sumPower(int[] cardIdArray){
        int result = 0;
        for(int i=0;i<power.length;i++){
            result += power[i] * cardIdArray[i];
        }
        return refNumber[(result%11)];
    }
    /**
     * 判断日期是否有效
     * @param inDate
     * @return
     */
    public static boolean isValidDate(String inDate) {
        if (inDate == null){
            return false;
        }
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
        if (inDate.trim().length() != dateFormat.toPattern().length()){
            return false;
        }
        dateFormat.setLenient(false);//严格的日期匹配
        try {
            dateFormat.parse(inDate.trim());
        } catch (ParseException e) {
            return false;
        }
        return true;
    }

}

如果使用spring框架可以 配合注解使用 详情请移步我的另一篇博文，自定义校验注解 https://www.cnblogs.com/purely/p/15987422.html