From 8b469710ce097accbefb7ff5e4951ffab4cc0424 Mon Sep 17 00:00:00 2001
From: hewencai <2357300448@qq.com>
Date: Mon, 29 Dec 2025 09:53:00 +0800
Subject: [PATCH] =?UTF-8?q?fix=EF=BC=9A=E4=BF=AE=E5=A4=8Dseata2.4=E7=89=88?=
 =?UTF-8?q?=E6=9C=AC=E4=B8=8B=E8=BE=BE=E6=A2=A6=E6=95=B0=E6=8D=AE=E5=BA=93?=
 =?UTF-8?q?=E5=9B=9E=E6=BB=9A=E5=BC=82=E5=B8=B8=E9=97=AE=E9=A2=98=EF=BC=8C?=
 =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E8=B0=83=E8=AF=95=E6=97=A5=E5=BF=97?=
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---
 .../seata/rm/datasource/DataCompareUtils.java  | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/zt-framework/zt-spring-boot-starter-seata-dm/src/main/java/org/apache/seata/rm/datasource/DataCompareUtils.java b/zt-framework/zt-spring-boot-starter-seata-dm/src/main/java/org/apache/seata/rm/datasource/DataCompareUtils.java
index 2d596096..1b91c4ab 100644
--- a/zt-framework/zt-spring-boot-starter-seata-dm/src/main/java/org/apache/seata/rm/datasource/DataCompareUtils.java
+++ b/zt-framework/zt-spring-boot-starter-seata-dm/src/main/java/org/apache/seata/rm/datasource/DataCompareUtils.java
@@ -26,6 +26,8 @@ import org.apache.seata.rm.datasource.undo.AbstractUndoLogManager;
 import org.apache.seata.rm.datasource.undo.parser.FastjsonUndoLogParser;
 import org.apache.seata.rm.datasource.undo.parser.JacksonUndoLogParser;
 import org.apache.seata.sqlparser.struct.TableMeta;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.lang.reflect.Method;
 import java.math.BigDecimal;
@@ -66,6 +68,18 @@ import java.util.stream.Collectors;
  */
 public class DataCompareUtils {
 
+    private static final Logger LOGGER = LoggerFactory.getLogger(DataCompareUtils.class);
+
+    /**
+     * 标识补丁类是否已加载
+     */
+    private static final boolean PATCHED;
+
+    static {
+        PATCHED = true;
+        LOGGER.info("[zt-spring-boot-starter-seata-dm] DataCompareUtils 补丁类已加载，用于解决达梦数据库 DmdbTimestamp 时区问题");
+    }
+
     private DataCompareUtils() {}
 
     /**
@@ -102,6 +116,10 @@ public class DataCompareUtils {
                                     Instant i0 = toInstant(v0);
                                     Instant i1 = toInstant(v1);
                                     boolean equals = Objects.equals(i0, i1);
+                                    if (LOGGER.isDebugEnabled()) {
+                                        LOGGER.debug("[zt-seata-dm-patch] DmdbTimestamp 比较: field={}, i0={}, i1={}, equals={}",
+                                                f0.getName(), i0, i1, equals);
+                                    }
                                     return equals
                                             ? Result.ok()
                                             : Result.buildWithParams(