From d09828cdec78a160f4530a8ab245216ed8671c27 Mon Sep 17 00:00:00 2001
From: liujie <liujie>
Date: 星期三, 20 九月 2023 18:43:48 +0800
Subject: [PATCH] Merge remote-tracking branch 'origin/master'

---
 cloud-server-course/src/main/java/com/dsh/course/util/DateTimeHelper.java |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/cloud-server-course/src/main/java/com/dsh/course/util/DateTimeHelper.java b/cloud-server-course/src/main/java/com/dsh/course/util/DateTimeHelper.java
index 017f6ac..a06b0d6 100644
--- a/cloud-server-course/src/main/java/com/dsh/course/util/DateTimeHelper.java
+++ b/cloud-server-course/src/main/java/com/dsh/course/util/DateTimeHelper.java
@@ -1789,5 +1789,18 @@
         return Date.from(endOfDay.atZone(ZoneId.systemDefault()).toInstant());
     }
 
+    /**
+     * 获取有效期数的结束时间
+     * @param startTime 开始时间
+     * @param validPeriod 有效期数
+     * @return 结束时间
+     */
+    public static Date getExpirationDate(Date startTime, int validPeriod){
+        Calendar calendar = Calendar.getInstance();
+        calendar.setTime(startTime);
+        calendar.add(Calendar.DAY_OF_MONTH, validPeriod);
+        return calendar.getTime();
+    }
+
 
 }

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