From 98118c2bf5343dde3dbf48c20bc8a0fd69cfedbd Mon Sep 17 00:00:00 2001
From: E1ED922C1E9526DD63272D7EC5C6CB77 <E1ED922C1E9526DD63272D7EC5C6CB77@i-search.com.cn>
Date: 星期一, 14 十二月 2020 10:12:42 +0800
Subject: [PATCH] Merge branch 'master' of https://gitee.com/huoxiong/hx_common

---
 src/main/java/com/hx/util/DateUtil.java |   49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 49 insertions(+), 0 deletions(-)

diff --git a/src/main/java/com/hx/util/DateUtil.java b/src/main/java/com/hx/util/DateUtil.java
index f387926..a2484b8 100644
--- a/src/main/java/com/hx/util/DateUtil.java
+++ b/src/main/java/com/hx/util/DateUtil.java
@@ -295,6 +295,19 @@
         return c.getTime();
     }
 
+    /**鏃堕棿涓婂勾鏁板彔鍔�
+     * @Author: ChenJiaHe
+     * @param dateTime 鏃堕棿
+     * @param dayNum 澶╂暟
+     * @return
+     */
+    public static Date addYear(Date dateTime,int dayNum){
+        Calendar c = Calendar.getInstance();
+        c.setTime(dateTime);
+        c.add(Calendar.YEAR, dayNum);
+        return c.getTime();
+    }
+
     /**
      * 杞崲鎴愬瓧绗︿覆鍒版寚瀹氱殑鏃ユ湡
      *
@@ -354,6 +367,42 @@
         return weekDays[w];
     }
 
+    /**
+     * endTime姣攕tartTime澶氱殑澶╂暟
+     * @param startTime 鏈�灏忔椂闂�
+     * @param endTime 鏈�澶ф椂闂�
+     * @return
+     */
+    public static Integer differDay(Date startTime,Date endTime){
+        Calendar cal1 = Calendar.getInstance();
+        cal1.setTime(startTime);
+
+        Calendar cal2 = Calendar.getInstance();
+        cal2.setTime(endTime);
+        int day1= cal1.get(Calendar.DAY_OF_YEAR);
+        int day2 = cal2.get(Calendar.DAY_OF_YEAR);
+
+        int year1 = cal1.get(Calendar.YEAR);
+        int year2 = cal2.get(Calendar.YEAR);
+        if(year1 != year2) { //鍚屼竴骞�
+            int timeDistance = 0 ;
+            for(int i = year1 ; i < year2 ; i ++) {
+                if(i%4==0 && i%100!=0 || i%400==0) {//闂板勾
+                    timeDistance += 366;
+                }
+                else {//涓嶆槸闂板勾
+                    timeDistance += 365;
+                }
+            }
+
+            return timeDistance + (day2-day1) ;
+        }
+        else { //涓嶅悓骞�
+            System.out.println("鍒ゆ柇day2 - day1 : " + (day2-day1));
+            return day2-day1;
+        }
+    }
+
     /**鍒ゆ柇涓や釜鏃堕棿鏄笉鏄悓涓�澶�*/
     public static boolean timeEqual(Date startTime,Date endTime){
        if(startTime == null || endTime==null){

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