package com.lyms.etl.util;

import java.util.Calendar;
import java.util.Date;

public class DateUtil {
    public static Integer getAge(Date birth) {
        if(null==birth){
            return null;
        }
        Calendar   calendar= Calendar.getInstance();
        Date date=new Date();
        calendar.setTime(date);

        Calendar c1 = Calendar.getInstance();
        Calendar c2 = Calendar.getInstance();
        c1.setTime(date);
        c2.setTime(birth);
        int year1 = c1.get(Calendar.YEAR);
        int year2 = c2.get(Calendar.YEAR);

        int mouth1 = c1.get(Calendar.MONTH);//0当前
        int mouth2 = c2.get(Calendar.MONTH);//4
        int i=0;
     /*   if(mouth2-mouth1>=0){
            int days1 = c1.get(Calendar.DAY_OF_MONTH);//当前10
            int days2 = c2.get(Calendar.DAY_OF_MONTH);//1
            if(days1<days2){
                i=i-1;
            }else if(days1>days2){
            }
        }else if(mouth1-mouth2<0){
            i=i-1;
        }*/

        if(mouth2==mouth1){
            int days1 = c1.get(Calendar.DAY_OF_MONTH);//当前10
            int days2 = c2.get(Calendar.DAY_OF_MONTH);//1
            if(days1<days2){
                i=i-1;
            }else if(days1>days2){
//                i=i-1;
            }
        }else if(mouth2>mouth1){
            i=i-1;
        }


//        if (birth == null) {
//            return null;
//        }
//        Date now = new Date();
//        long m = now.getTime() - birth.getTime();
//        Long age = m / 31536000000L;
//        return age.intValue();
        return (Math.abs(year1 - year2)+i);
    }
}