From 8444084e6aa11efa23287e7f82474ac22378a5c4 Mon Sep 17 00:00:00 2001
From: Pu Zhibing <393733352@qq.com>
Date: 星期二, 01 四月 2025 16:03:19 +0800
Subject: [PATCH] Merge remote-tracking branch 'origin/master'

---
 ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/DateUtils.java |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/DateUtils.java b/ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/DateUtils.java
index 65c71f5..71ea2c8 100644
--- a/ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/DateUtils.java
+++ b/ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/DateUtils.java
@@ -6,6 +6,7 @@
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.time.*;
+import java.util.Calendar;
 import java.util.Date;
 
 /**
@@ -167,6 +168,20 @@
         return day + "天" + hour + "小时" + min + "分钟";
     }
 
+    public static long diffTime(Date startTime, Date endTime){
+        // 获取Calendar实例
+        Calendar cal1 = Calendar.getInstance();
+        Calendar cal2 = Calendar.getInstance();
+        // 设置Calendar对象的时间
+        cal1.setTime(startTime);
+        cal2.setTime(endTime);
+        // 获取时间差
+        long milliseconds1 = cal1.getTimeInMillis();
+        long milliseconds2 = cal2.getTimeInMillis();
+        long diff = milliseconds2 - milliseconds1;
+        return diff;
+    }
+
     /**
      * 增加 LocalDateTime ==> Date
      */
@@ -207,4 +222,15 @@
         }
         return sb.toString();
     }
+
+    public static Date getTodayStartTime() {
+        // 获取今天的日期
+        LocalDate today = LocalDate.now();
+
+        // 获取当天的开始时间(00:00:00)
+        LocalDateTime startOfDay = today.atStartOfDay();
+
+        // 转换为 Date 类型
+        return Date.from(startOfDay.atZone(ZoneId.systemDefault()).toInstant());
+    }
 }

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