package com.ruoyi.system.utils.util;
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import java.time.LocalDate;
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import java.time.Period;
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import java.time.format.DateTimeFormatter;
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public class IDCardAgeCalculator {
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public static int calculateAge(String idCard) {
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// 检查身份证号码是否为18位
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if (idCard == null || idCard.length() != 18) {
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throw new IllegalArgumentException("身份证号码必须为18位");
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}
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// 解析出生日期
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String birthDateStr = idCard.substring(6, 14); // 获取出生日期部分
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LocalDate birthDate = LocalDate.parse(birthDateStr, DateTimeFormatter.ofPattern("yyyyMMdd"));
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// 获取当前日期
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LocalDate currentDate = LocalDate.now();
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// 计算年龄
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Period period = Period.between(birthDate, currentDate);
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int age = period.getYears(); // 直接获取年份差即为年龄
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return age;
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}
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public static void main(String[] args) {
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String idCard = "110105194912311234"; // 示例身份证号码
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try {
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int age = calculateAge(idCard);
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System.out.println("年龄: " + age);
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} catch (Exception e) {
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System.out.println(e.getMessage());
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}
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}
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}
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