From 85bad816bc63978523cc68cb5dc527d24bb43d68 Mon Sep 17 00:00:00 2001
From: Chaiyong Ragkhitwetsagul <cragkhit@gmail.com>
Date: Wed, 19 Mar 2025 05:40:16 +0700
Subject: [PATCH] Update HexFormatUtil.java

Added a null check.
---
 src/main/java/io/mycat/util/HexFormatUtil.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/main/java/io/mycat/util/HexFormatUtil.java b/src/main/java/io/mycat/util/HexFormatUtil.java
index cda02d3b1..1f0e18cfc 100644
--- a/src/main/java/io/mycat/util/HexFormatUtil.java
+++ b/src/main/java/io/mycat/util/HexFormatUtil.java
@@ -31,6 +31,9 @@ public final class HexFormatUtil {
 	private final static char[] hexArray = "0123456789ABCDEF".toCharArray();
 	
 	public static String bytesToHexString(byte[] bytes) {
+	    if (bytes == null) {
+                return null;
+            }
 	    char[] hexChars = new char[bytes.length * 2];
 	    for ( int j = 0; j < bytes.length; j++ ) {
 	        int v = bytes[j] & 0xFF;
@@ -93,4 +96,4 @@ public static long fromHex8B(String src) {
         return l;
     }
 
-}
\ No newline at end of file
+}