身份证校验(java)

判断是第几代身份证(第一代15位, 第二代18位)

 if (cardId.length() == 15 || cardId.length() == 18) {
     if (!this.cardCodeVerifySimple(cardId)) {
         error.put("cardId", "15位或18位身份证号码不正确");
     } else {
         if (cardId.length() == 18 && !this.cardCodeVerify(cardId)) {
             error.put("cardId", "18位身份证号码不符合国家规范");
         }
     }
 } else {
     error.put("cardId", "身份证号码长度必须等于15或18位");
 }

正则校验身份证是否符合第一代第二代标准

 private boolean cardCodeVerifySimple(String cardcode) {
     //第一代身份证正则表达式(15位)
     String isIDCard1 = "^[1-9]\\d{7}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])\\d{3}$";
     //第二代身份证正则表达式(18位)
     String isIDCard2 ="^[1-9]\\d{5}[1-9]\\d{3}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])((\\d{4})|\\d{3}[A-Z])$";

     //验证身份证
     if (cardcode.matches(isIDCard1) || cardcode.matches(isIDCard2)) {
         return true;
     }
     return false;
 }

验证第二代身份证是否符合国家规范

 private boolean cardCodeVerify(String cardcode) {
     int i = 0;
     String r = "error";
     String lastnumber = "";

     i += Integer.parseInt(cardcode.substring(0, 1)) * 7;
     i += Integer.parseInt(cardcode.substring(1, 2)) * 9;
     i += Integer.parseInt(cardcode.substring(2, 3)) * 10;
     i += Integer.parseInt(cardcode.substring(3, 4)) * 5;
     i += Integer.parseInt(cardcode.substring(4, 5)) * 8;
     i += Integer.parseInt(cardcode.substring(5, 6)) * 4;
     i += Integer.parseInt(cardcode.substring(6, 7)) * 2;
     i += Integer.parseInt(cardcode.substring(7, 8)) * 1;
     i += Integer.parseInt(cardcode.substring(8, 9)) * 6;
     i += Integer.parseInt(cardcode.substring(9, 10)) * 3;
     i += Integer.parseInt(cardcode.substring(10,11)) * 7;
     i += Integer.parseInt(cardcode.substring(11,12)) * 9;
     i += Integer.parseInt(cardcode.substring(12,13)) * 10;
     i += Integer.parseInt(cardcode.substring(13,14)) * 5;
     i += Integer.parseInt(cardcode.substring(14,15)) * 8;
     i += Integer.parseInt(cardcode.substring(15,16)) * 4;
     i += Integer.parseInt(cardcode.substring(16,17)) * 2;
     i = i % 11;
     lastnumber =cardcode.substring(17,18);
     if (i == 0) {
         r = "1";
     }
     if (i == 1) {
         r = "0";
     }
     if (i == 2) {
         r = "x";
     }
     if (i == 3) {
         r = "9";
     }
     if (i == 4) {
         r = "8";
     }
     if (i == 5) {
         r = "7";
     }
     if (i == 6) {
         r = "6";
     }
     if (i == 7) {
         r = "5";
     }
     if (i == 8) {
         r = "4";
     }
     if (i == 9) {
         r = "3";
     }
     if (i == 10) {
         r = "2";
     }
     if (r.equals(lastnumber.toLowerCase())) {
         return true;
     }
     return false;
 }