From 8408660721d66ba85cf2225f7b1476e79fbe191f Mon Sep 17 00:00:00 2001
From: shad0wm00n <yangshuo.seu@gmail.com>
Date: Thu, 25 Dec 2025 00:59:03 +0800
Subject: [PATCH] =?UTF-8?q?fix=20issue=20IDFNH0=EF=BC=8C=E5=9C=A8=E6=96=B9?=
 =?UTF-8?q?=E6=B3=95=E4=B8=80=E5=BC=80=E5=A7=8B=E8=BF=9B=E8=A1=8C=E7=A9=BA?=
 =?UTF-8?q?=E5=88=A4=E6=96=AD=E3=80=82?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 hutool-core/src/main/java/cn/hutool/core/util/HexUtil.java  | 3 +++
 .../src/test/java/cn/hutool/core/util/HexUtilTest.java      | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/hutool-core/src/main/java/cn/hutool/core/util/HexUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/HexUtil.java
index 1083e2897e..cb1c135a67 100755
--- a/hutool-core/src/main/java/cn/hutool/core/util/HexUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/HexUtil.java
@@ -27,6 +27,9 @@ public class HexUtil {
 	 * @return 是否为16进制
 	 */
 	public static boolean isHexNumber(String value) {
+		if (StrUtil.isEmpty(value)) {
+			return false;
+		}
 		if (StrUtil.startWith(value, '-')) {
 			// issue#2875
 			return false;
diff --git a/hutool-core/src/test/java/cn/hutool/core/util/HexUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/util/HexUtilTest.java
index f8e7a07454..84b1ec8688 100755
--- a/hutool-core/src/test/java/cn/hutool/core/util/HexUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/util/HexUtilTest.java
@@ -59,6 +59,12 @@ public class HexUtilTest {
 		assertFalse(HexUtil.isHexNumber(a));
 	}
 
+	@Test
+	public void isHexNumberTest2() {
+		assertFalse(HexUtil.isHexNumber(""));
+		assertFalse(HexUtil.isHexNumber(null));
+	}
+
 	@Test
 	public void decodeTest(){
 		final String str = "e8c670380cb220095268f40221fc748fa6ac39d6e930e63c30da68bad97f885d";