1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
| package com.sinata.appointment.util;
|
| import java.util.Locale;
|
| /** 中国大陆身份证号基础校验（18 位） */
| public final class IdCardUtil {
|
| private static final int[] WEIGHTS = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2};
| private static final char[] CHECK_CODES = {'1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'};
|
| private IdCardUtil() {}
|
| public static boolean isValidMainland18(String idCard) {
| if (idCard == null) {
| return false;
| }
| String s = idCard.trim().toUpperCase(Locale.ROOT);
| if (!s.matches("^[0-9]{17}[0-9X]$")) {
| return false;
| }
| int sum = 0;
| for (int i = 0; i < 17; i++) {
| sum += (s.charAt(i) - '0') * WEIGHTS[i];
| }
| int idx = sum % 11;
| return CHECK_CODES[idx] == s.charAt(17);
| }
| }
|
|
