From 0e3374eb8ac33baa29ac77a65065a9e405e49379 Mon Sep 17 00:00:00 2001
From: lisy <linlangsur163@163.com>
Date: 星期四, 13 七月 2023 18:31:23 +0800
Subject: [PATCH] 使用福利:本周福利的限时折扣+赠送课时的列表查询

---
 cloud-server-course/src/main/java/com/dsh/course/util/LocalDateTimeUtils.java |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/cloud-server-course/src/main/java/com/dsh/course/util/LocalDateTimeUtils.java b/cloud-server-course/src/main/java/com/dsh/course/util/LocalDateTimeUtils.java
index 1a83e4d..b706602 100644
--- a/cloud-server-course/src/main/java/com/dsh/course/util/LocalDateTimeUtils.java
+++ b/cloud-server-course/src/main/java/com/dsh/course/util/LocalDateTimeUtils.java
@@ -5,6 +5,8 @@
 import java.time.Duration;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.util.Calendar;
+import java.util.Date;
 
 /**
  * LocalDateTimeUtils
@@ -89,5 +91,26 @@
         return dayOfWeek.getValue();
     }
 
+    /**
+     * 根据输入本周的周几,获取当天的时间
+     * @param dayOfWeekInput 周几
+     * @return
+     */
+    public static Date getDateOfWeekNum(int dayOfWeekInput){
+        // 获取当前日期
+        Calendar calendar = Calendar.getInstance();
+        calendar.setTime(new Date());
+
+        // 设置为本周的第一天(星期一)
+        calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
+
+        // 根据输入的星期几数值,计算出相应的偏移量
+        int dayOfWeekIndex = (dayOfWeekInput + 6) % 7;
+        calendar.add(Calendar.DAY_OF_WEEK, dayOfWeekIndex);
+
+        // 获取计算后的日期
+        return calendar.getTime();
+    }
+
 
 }

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