java驗證身份證號碼
阿新 • • 發佈:2019-01-29
import java.util.Calendar; import java.util.GregorianCalendar; import java.util.HashMap; import java.util.Map; public class IDCardUtil { final static Map<Integer, String> zoneNum = new HashMap<Integer, String>(); static { zoneNum.put(11, "北京"); zoneNum.put(12, "天津"); zoneNum.put(13, "河北"); zoneNum.put(14, "山西"); zoneNum.put(15, "內蒙古"); zoneNum.put(21, "遼寧"); zoneNum.put(22, "吉林"); zoneNum.put(23, "黑龍江"); zoneNum.put(31, "上海"); zoneNum.put(32, "江蘇"); zoneNum.put(33, "浙江"); zoneNum.put(34, "安徽"); zoneNum.put(35, "福建"); zoneNum.put(36, "江西"); zoneNum.put(37, "山東"); zoneNum.put(41, "河南"); zoneNum.put(42, "湖北"); zoneNum.put(43, "湖南"); zoneNum.put(44, "廣東"); zoneNum.put(45, "廣西"); zoneNum.put(46, "海南"); zoneNum.put(50, "重慶"); zoneNum.put(51, "四川"); zoneNum.put(52, "貴州"); zoneNum.put(53, "雲南"); zoneNum.put(54, "西藏"); zoneNum.put(61, "陝西"); zoneNum.put(62, "甘肅"); zoneNum.put(63, "青海"); zoneNum.put(64, "新疆"); zoneNum.put(71, "臺灣"); zoneNum.put(81, "香港"); zoneNum.put(82, "澳門"); zoneNum.put(91, "外國"); } final static int[] PARITYBIT = {'1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'}; final static int[] POWER_LIST = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2}; /** * 身份證驗證 *@param s 號碼內容 *@return 是否有效 null和"" 都是false */ public static boolean isIDCard(String certNo){ if(certNo == null || (certNo.length() != 15 && certNo.length() != 18)) return false; final char[] cs = certNo.toUpperCase().toCharArray(); //校驗位數 int power = 0; for(int i=0; i<cs.length; i++){ if(i==cs.length-1 && cs[i] == 'X') break;//最後一位可以 是X或x if(cs[i]<'0' || cs[i]>'9') return false; if(i < cs.length -1){ power += (cs[i] - '0') * POWER_LIST[i]; } } //校驗區位碼 if(!zoneNum.containsKey(Integer.valueOf(certNo.substring(0,2)))){ return false; } //校驗年份 String year = certNo.length() == 15 ? getIdcardCalendar() + certNo.substring(6,8) :certNo.substring(6, 10); final int iyear = Integer.parseInt(year); if(iyear < 1900 || iyear > Calendar.getInstance().get(Calendar.YEAR)) return false;//1900年的PASS,超過今年的PASS //校驗月份 String month = certNo.length() == 15 ? certNo.substring(8, 10) : certNo.substring(10,12); final int imonth = Integer.parseInt(month); if(imonth <1 || imonth >12){ return false; } //校驗天數 String day = certNo.length() ==15 ? certNo.substring(10, 12) : certNo.substring(12, 14); final int iday = Integer.parseInt(day); if(iday < 1 || iday > 31) return false; //校驗"校驗碼" if(certNo.length() == 15) return true; return cs[cs.length -1 ] == PARITYBIT[power % 11]; } private static int getIdcardCalendar() { GregorianCalendar curDay = new GregorianCalendar(); int curYear = curDay.get(Calendar.YEAR); int year2bit = Integer.parseInt(String.valueOf(curYear).substring(2)); return year2bit; } public static void main(String[] args) { boolean mark = isIDCard("450981198802261753"); System.out.println(mark); } }