java实现身份证号码验证的示例代码

import java.io.*;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.function.Consumer;
import java.util.regex.Pattern;
public class IdCardCheckUtils {
    public static final Integer[] idCardWeight = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2};//身份证前17位数字依次乘以对应的权重因子
    public static final String[] CONSTELLATION_ARR = {"水瓶座", "双鱼座", "白羊座", "金牛座", "双子座", "巨蟹座", "狮子座", "处女座", "天秤座", "天蝎座", "射手座", "魔羯座"};//星座数组
    public static final int[] CONSTELLATION_EDGE_DAY = {20, 19, 21, 21, 21, 22, 23, 23, 23, 23, 22, 22};//星座对应的边缘日期
    public static final String[] ZODIAC_ARR = {"猴", "鸡", "狗", "猪", "鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊"};//生肖
    public static Map<Integer, String> idCardMap = new HashMap<>();//组装根据余数，对应一个指定的校验码
    private static Map<Integer, String> nativePlaceCode = new HashMap<>(4096, 1);//内存籍贯编号,记录身份证编号对应的地址
    public static void main(String[] args) throws Exception {
        String path = "C:\\Users\\Administrator\\Desktop\\code.txt";//编号文件
        init(path);//初始化身份证校验参数
        String idCard = "512926164805034455";//测试的身份证号码
        checkIdCard(idCard);//校验身份证是否输入正常
        //基本信息
        System.out.println("出生日期:" + idCard.substring(6, 10) + "." + idCard.substring(10, 12) + "." + idCard.substring(12, 14));
        System.out.println("性别：" +getSex(idCard));
        System.out.println("年龄：" + getAge(idCard));
        System.out.println("您的星座：" + getConstellation(idCard));
        System.out.println("您的生肖：" + getAnimalSign(idCard));
        //籍贯信息
        int nativePlaceCode = Integer.parseInt(idCard.substring(0, 6));//籍贯组合编码
        int provinceCode = nativePlaceCode / 10000;//省编码
        int cityCode = nativePlaceCode / 100;//市编码
        int countyCode = nativePlaceCode;//县编码
        System.out.println(IdCardCheckUtils.nativePlaceCode.get(provinceCode));
        System.out.println(IdCardCheckUtils.nativePlaceCode.get(cityCode));
        System.out.println(IdCardCheckUtils.nativePlaceCode.get(countyCode));
    }
    /**
     * 初始化地区编码文件与校验码
     *
     * @param path
     * @throws IOException
     */
    private static void init(String path) throws IOException {
        synchronized (String.class) {
            if (!idCardMap.isEmpty()) return;
            Consumer<String> function = line -> {
                String[] split = line.split(":");
                nativePlaceCode.put(Integer.valueOf(split[0]), split[1]);
            };
            read(path, function);//将文件内容加载到map内存中
            final String[] idCardCheck = {"1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2"};//身份证最后一位对应的校验码
            for (int i = 0; i < 10; i++) {
                idCardMap.put(i, idCardCheck[i]);//校验码记录
            }
        }
    }
    /**
     * 验证身份证号码是否正常
     *
     * @param idCardNo
     * @return
     */
    public static void checkIdCard(String idCardNo) throws Exception {
        String idCard = idCardNo.toUpperCase();//将其转成大写有的身份证最后一位是字母
        if (idCardNo.length() == 15) {//15位身份证转成18位
            if (!(idCardNo.matches("[0-9]{17}[0-9|x]|[0-9]{15}"))) throw new Exception("身份证号码输入错误,请输入正确格式的15位身份证号码");
            String s2 = idCardNo.substring(0, 6);//15位转换为18位
            String s3 = idCardNo.substring(6, 15);
            String changed = s2.concat("19").concat(s3);
            idCard = changed.toUpperCase();
        }
        if (!Pattern.matches("^\\d{17}", idCard.substring(0, 17))) throw new Exception("身份证号码输入错误,前17位必须是数字");//验证身份证前17位是否为数字
        char[] idCardCharNumber = idCard.toCharArray();
        Integer resultSum = 0;
        for (int i = 0; i < idCardCharNumber.length - 1; i++) resultSum += Character.getNumericValue(idCardCharNumber[i]) * idCardWeight[i];
        Integer lastResult = resultSum % 11;//将相加的前17位数字依次乘以对应的权重因子相加，相加的结果除以11，得到余数
        //根据余数，对应一个指定的校验码。最终得到的校验码就是身份证号码的最后一位数字。通过这个校验码，可以验证前面17位数字是否正确，从而提高身份证号码的准确性
        if (!(idCardMap.containsKey(lastResult)) || !(idCardMap.get(lastResult).equals(idCard.substring(idCard.length() - 1)))) throw new Exception("身份证号码校验异常,输入错误");
    }
    /**
     * 根据日期获取当前年龄
     *
     * @return
     */
    public static int getAge(String idCard) {
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
        String dateString = dateFormat.format(new Date());
        int currentDate = Integer.parseInt(dateString);
        int idCardDate = Integer.parseInt(idCard.substring(6, 10) + idCard.substring(10, 12) + idCard.substring(12, 14));
        int age = (currentDate - idCardDate) / 10000;
        return age;
    }
    /**
     * 根据身份证id获取当前年龄
     *
     * @return
     */
    public static String getSex(String idCard) {
        String sex = Integer.parseInt(idCard.substring(16, 17)) % 2 == 0 ? "女" : "男";
        return sex;
    }
    /**
     * 根据身份证号判断用户星座
     *
     * @param cardNo
     * @return
     */
    public static String getConstellation(String cardNo) {
        String birthday = cardNo.substring(6, 14);// 获取出生日期
        Date birthdate = null;
        try {
            birthdate = new SimpleDateFormat("yyyyMMdd").parse(birthday);
            if (birthdate == null) return "";
            Calendar cal = Calendar.getInstance();
            cal.setTime(birthdate);
            int month = cal.get(Calendar.MONTH);
            int day = cal.get(Calendar.DAY_OF_MONTH);
            if (day < CONSTELLATION_EDGE_DAY[month]) month = month - 1;
            if (month >= 0) return CONSTELLATION_ARR[month];
            return CONSTELLATION_ARR[11];// default to return 魔羯
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return null;
    }
    /**
     * 根据身份证号判断用户生肖
     *
     * @param cardNo
     * @return
     */
    public static String getAnimalSign(String cardNo) {
        String birthday = cardNo.substring(6, 14);// 获取出生日期
        Date birthdate;
        try {
            birthdate = new SimpleDateFormat("yyyyMMdd").parse(birthday);
            Calendar cal = Calendar.getInstance();
            cal.setTime(birthdate);
            return ZODIAC_ARR[cal.get(Calendar.YEAR) % 12];
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return null;
    }
    public static void read(String path, Consumer<String> func) throws IOException {
        File file = new File(path);
        FileInputStream fileInputStream = null;
        InputStreamReader read = null;//考虑到编码格式
        BufferedReader bufferedReader = null;
        try {
            fileInputStream = new FileInputStream(file);
            read = new InputStreamReader(fileInputStream, "UTF-8");
            bufferedReader = new BufferedReader(read);
            String lineTxt;
            while ((lineTxt = bufferedReader.readLine()) != null) func.accept(lineTxt);//读取一行
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            bufferedReader.close();
            read.close();
            fileInputStream.close();
        }
    }
}