中国居民身份证号码校验算法

  /**
     * 中国居民身份证校验码算法
     * @param IDNumber 身份证号码
     * @return 校验成功返回true，否则返回false
     */
    public static boolean IDNumberCheck(String IDNumber) {
        boolean results = false;
        //前17位对应的系数
        int[] verifyCode = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2};
        //第18位校验码
        String[] checksum = {"1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2"};
        if (IDNumber.length() != 18) {
            return results;
        }
        //计算前17位数字
        int aSum = 0;
        for (int i = 0; i < IDNumber.length() - 1; i++) {
            aSum += (Integer.parseInt(IDNumber.substring(i, i + 1)) * verifyCode[i]);
        }
        //校验最后一位校验码
        if (IDNumber.substring(IDNumber.length() - 1).equals(checksum[aSum % 11])) {
            return true;
        }
        return results;
    }

测试代码：

String ID = "";
System.out.println(IDNumberCheck(ID));