| package com.ruoyi.common.utils; | 
|   | 
| public class IDCardUtils { | 
|   | 
|     public static void main(String[] args) { | 
|         String idCardNumber = "110101199001011234"; | 
|         String birthday = getBirthdayFromIdCard(idCardNumber); | 
|         System.out.println("出生日期为:" + birthday); | 
|     } | 
|   | 
|     public static String getBirthdayFromIdCard(String idCardNumber) { | 
|         String birthday = idCardNumber.substring(6, 14); | 
|         String year = birthday.substring(0, 4); | 
|         String month = birthday.substring(4, 6); | 
|         String day = birthday.substring(6, 8); | 
|         return year + "-" + month + "-" + day; | 
|     } | 
| } |