From bf979f253446f41e29869f7b36c129d3e63759b9 Mon Sep 17 00:00:00 2001
From: Looly <loolly@aliyun.com>
Date: Sun, 4 Jan 2026 18:15:36 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D`DateUnit`=E6=AF=AB=E7=A7=92?=
 =?UTF-8?q?=E8=BD=AC=E6=8D=A2=E9=97=AE=E9=A2=98=EF=BC=88issue#4209@Github?=
 =?UTF-8?q?=EF=BC=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 CHANGELOG.md                                                | 1 +
 hutool-core/src/main/java/cn/hutool/core/date/DateUnit.java | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index e7e5eae6a9..52472dafa3 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,6 +35,7 @@
 * 【core       】  修复`Calculator.conversion`方法计算包含%连接一元运算符的计算表达式的结果时逻辑缺陷（pr#4191@Github）
 * 【db         】  修复`SqlUtil.PATTERN_IN_CLAUSE`逻辑缺陷导致in语句参数不正确的问题（pr#4203@Github）
 * 【json       】  修复`ObjectMapper`过滤器对Bean复制无效的问题（pr#1431@Gitee）
+* 【core       】  修复`DateUnit`毫秒转换问题（issue#4209@Github）
 
 -------------------------------------------------------------------------------------------------------------
 # 5.8.42(2025-11-28)
diff --git a/hutool-core/src/main/java/cn/hutool/core/date/DateUnit.java b/hutool-core/src/main/java/cn/hutool/core/date/DateUnit.java
index 17388cb909..81850e03a4 100644
--- a/hutool-core/src/main/java/cn/hutool/core/date/DateUnit.java
+++ b/hutool-core/src/main/java/cn/hutool/core/date/DateUnit.java
@@ -65,7 +65,7 @@ public enum DateUnit {
 	 */
 	public static DateUnit of(ChronoUnit unit) {
 		switch (unit) {
-			case MICROS:
+			case MILLIS:
 				return DateUnit.MS;
 			case SECONDS:
 				return DateUnit.SECOND;
@@ -91,7 +91,7 @@ public enum DateUnit {
 	public static ChronoUnit toChronoUnit(DateUnit unit) {
 		switch (unit) {
 			case MS:
-				return ChronoUnit.MICROS;
+				return ChronoUnit.MILLIS;
 			case SECOND:
 				return ChronoUnit.SECONDS;
 			case MINUTE: