From 1aa309700fb7e12d85f98bed22a45bdac448ec1c Mon Sep 17 00:00:00 2001
From: liujie <liujie>
Date: 星期六, 16 九月 2023 11:18:46 +0800
Subject: [PATCH] app 2.0
---
cloud-server-course/src/main/java/com/dsh/course/util/DateTimeHelper.java | 31 +++++++++++++++++++++++++++++++
1 files changed, 31 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 97688c4..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
@@ -1438,6 +1438,24 @@
return weekDays[w];
}
+
+ /**
+ * 获取当前日期是星期几<br>
+ * Obtain the day of the week for the current date.
+ * @param dt
+ * @return 当前日期是星期几
+ */
+ public static int getWeekNumOfDate(Date dt) {
+ Integer[] weekDays = {7, 1, 2, 3, 4, 5, 6}; // 将周一的数值设为2，依次递增表示周二到周日
+ Calendar cal = Calendar.getInstance();
+ cal.setTime(dt);
+ int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
+ if (w < 0) {
+ w = 6; // 如果为负数，将其设为6，表示周日
+ }
+ return weekDays[w];
+ }
+
/**
* 获取今天时间 2017-11-20 00:00:00
*/
@@ -1771,5 +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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