Java8使用LocalDate 获取日期间隔年、月、日，生日

迈不过友情╰ 2023-06-30 01:31 8阅读 0赞

1、代码

package com.myfutech.insure.service.api.util;
    
    
    import org.apache.commons.lang3.time.DateUtils;
    
    import java.time.LocalDate;
    import java.time.ZoneId;
    import java.time.temporal.ChronoUnit;
    import java.util.Date;
    
    /**
     * @author liuxd
     * 生日计算公式
     * 周岁 = 现年份-出生年份（今年的生日已经过了）
     * 或者：周岁 = 现年份-出生年份-1（今年的生日还没过）
     * @version 1.0
     * @date 2020-01-13 14:23
     */
    public class AgeUtil {
    
        
        public static int getYearsAge(Date birthDay) {
            LocalDate to = LocalDate.now();
            LocalDate from = date2LocalDate(birthDay);
            int age = (int) ChronoUnit.YEARS.between(from, to);
            return age;
        }
    
        public static int getMothsAge(Date birthDay) {
            LocalDate to = LocalDate.now();
            LocalDate from = date2LocalDate(birthDay);
            int age = (int) ChronoUnit.MONTHS.between(from, to);
            return age;
        }
    
        public static int getDaysAge(Date birthDay) {
            LocalDate to = LocalDate.now();
            LocalDate from = date2LocalDate(birthDay);
            int age = (int) ChronoUnit.DAYS.between(from, to);
            return age;
        }
    
    
        /**
         * Date转LocalDate
         *
         * @param date
         */
        public static LocalDate date2LocalDate(Date date) {
            if (null == date) {
                return null;
            }
            return date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
        }
    
    
        public static void main(String[] args) throws Exception {
            Date date = DateUtils.parseDate("2019-01-14", "yyyy-MM-dd");
            int yearsAge = getYearsAge(date);
            int monthsAge = getMothsAge(date);
            int daysAge = getDaysAge(date);
    
            System.out.println(yearsAge);
            System.out.println(monthsAge);
            System.out.println(daysAge);
    
        }
    
    }