/**

     * 根据身份证计算年龄

     *

     * @param idcard

     * @return

     */

    public static Integer idCardToAge(String idcard) {

        Integer selectYear = Integer.valueOf(idcard.substring(6, 10));         //出生的年份

        Integer selectMonth = Integer.valueOf(idcard.substring(10, 12));       //出生的月份

        Integer selectDay = Integer.valueOf(idcard.substring(12, 14));         //出生的日期

        Calendar cal = Calendar.getInstance();

        Integer yearMinus = cal.get(Calendar.YEAR) - selectYear;

        Integer monthMinus = cal.get(Calendar.MONTH) + 1 - selectMonth;

        Integer dayMinus = cal.get(Calendar.DATE) - selectDay;

        Integer age = yearMinus;

        if (yearMinus < 0) {

            age = 0;

        } else if (yearMinus == 0) {

            age = 0;

        } else if (yearMinus > 0) {

            if (monthMinus == 0) {

                if (dayMinus < 0) {

                    age = age - 1;

                }

            } else if (monthMinus > 0) {

                age = age + 1;

            }

        }

        return age;

    }