小编给大家分享一下Java如何实现身份证号码验证,相信大部分人都还不怎么了解,因此分享这篇文章给大家参考一下,希望大家阅读完这篇文章后大有收获,下面让我们一起去了解一下吧!具体如下:package xxx;import
小编给大家分享一下Java如何实现身份证号码验证,相信大部分人都还不怎么了解,因此分享这篇文章给大家参考一下,希望大家阅读完这篇文章后大有收获,下面让我们一起去了解一下吧!
具体如下:
package xxx;import java.text.ParseException;import java.text.SimpleDateFORMat;import java.util.Calendar;import java.util.Date;import java.util.Random;public class IDCardUtil{ final static String CITY_CODE[] = {"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"}; final static char[] PARITYBIT = {'1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'}; final static int[] POWER = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2}; public final static boolean isValid(String id) { if (id == null) return false; int len = id.length(); if (len != 15 && len != 18) return false; //校验区位码 if (!validCityCode(id.substring(0, 2))) return false; //校验生日 if (!validDate(id)) return false; if (len == 15) return true; //校验位数 return validParityBit(id); } private static boolean validParityBit(String id) { char[] cs = id.toUpperCase().toCharArray(); int power = 0; for (int i = 0; i < cs.length; i++) { //最后一位可以是X if (i == cs.length - 1 && cs[i] == 'X') break; // 非数字 if (cs[i] < '0' || cs[i] > '9') return false; // 加权求和 if (i < cs.length - 1) { power += (cs[i] - '0') * POWER[i]; } } return PARITYBIT[power % 11] == cs[cs.length - 1]; } private static boolean validDate(String id) { try { String birth = id.length() == 15 ? "19" + id.substring(6, 12) : id.substring(6, 14); SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd"); Date birthDate = sdf.parse(birth); if (!birth.equals(sdf.format(birthDate))) return false; } catch (ParseException e) { return false; } return true; } private static boolean validCityCode(String cityCode) { for (String code : CITY_CODE) { if (code.equals(cityCode)) return true; } return false; } final public static String id15To18(String id) { if (id == null || id.length() != 15) return null; if (!isValid(id)) return null; String id17 = id.substring(0, 6) + "19" + id.substring(6); int power = 0; char[] cs = id17.toCharArray(); for (int i = 0; i < cs.length; i++) { power += (cs[i] - '0') * POWER[i]; } // 将前17位与第18位校验码拼接 return id17 + String.valueOf(PARITYBIT[power % 11]); } public static int rand(int min, int max) { Random random = new Random(); return random.nextInt(max + 1) % (max - min + 1) + min; } public final static String generateID() { // 地址码 String body = CITY_CODE[rand(0, CITY_CODE.length - 1)] + "0101"; // 出生年 String y = String.valueOf(rand(1950, Calendar.getInstance().get(Calendar.YEAR))); String m = String.valueOf(rand(1, 12)); if (m.length() == 1) m = "0" + m; String d = String.valueOf(rand(1, 28)); if (d.length() == 1) d = "0" + d; String idx = String.valueOf(rand(1, 999)); if (idx.length() == 1) idx = "00" + idx; else if (idx.length() == 2) idx = "0" + idx; body += y + m + d + idx; // 累加body部分与位置加权的积 int power = 0; char[] cs = body.toCharArray(); for (int i = 0; i < cs.length; i++) { power += (cs[i] - '0') * POWER[i]; } // 得出校验码 return body + String.valueOf(PARITYBIT[power % 11]); }}
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