From 7e2b74fb9d6c5f37380e25d3ce75a25621c287cc Mon Sep 17 00:00:00 2001
From: t8y2 <1156263951@qq.com>
Date: Sun, 27 Sep 2026 07:59:24 +0000
Subject: [PATCH] fix(sqlserver): handle traditional chinese legacy fallback

Closes #8798
---
 .../sqlserverlegacy/SqlServerLegacyAgent.java | 12 ++++++----
 .../SqlServerLegacyAgentTest.java             | 24 +++++++++++++++++++
 2 files changed, 32 insertions(+), 4 deletions(-)

diff --git a/agents/drivers/sqlserver-legacy/src/main/java/com/dbx/agent/sqlserverlegacy/SqlServerLegacyAgent.java b/agents/drivers/sqlserver-legacy/src/main/java/com/dbx/agent/sqlserverlegacy/SqlServerLegacyAgent.java
index 79c03bbc3b..bd8c9348f3 100644
--- a/agents/drivers/sqlserver-legacy/src/main/java/com/dbx/agent/sqlserverlegacy/SqlServerLegacyAgent.java
+++ b/agents/drivers/sqlserver-legacy/src/main/java/com/dbx/agent/sqlserverlegacy/SqlServerLegacyAgent.java
@@ -211,10 +211,14 @@ public final class SqlServerLegacyAgent extends ConfiguredJdbcAgent {
                 String normalized = message.toLowerCase(Locale.ROOT);
                 // mssql-jdbc rejects SQL Server 2000 (major version 8) during
                 // prelogin with "SQL Server version 8 is not supported by
-                // this driver." — the version word breaks a plain
-                // "sql server 8" substring match, so accept both shapes.
-                boolean version8Rejection = (normalized.contains("sql server 8") || normalized.contains("sql server version 8"))
-                    && (normalized.contains("not support") || normalized.contains("不支持"));
+                // this driver." Localized messages can translate the version
+                // and unsupported phrases, so accept those equivalent shapes.
+                boolean version8Rejection = (normalized.contains("sql server 8")
+                    || normalized.contains("sql server version 8")
+                    || normalized.contains("sql server 版本 8"))
+                    && (normalized.contains("not support")
+                        || normalized.contains("不支持")
+                        || normalized.contains("不支援"));
                 // Other driver wordings name the supported floor instead. The
                 // localized mssql-jdbc resource keeps "SQL Server 2005" in
                 // English while translating the "or later" suffix.
diff --git a/agents/drivers/sqlserver-legacy/src/test/java/com/dbx/agent/sqlserverlegacy/SqlServerLegacyAgentTest.java b/agents/drivers/sqlserver-legacy/src/test/java/com/dbx/agent/sqlserverlegacy/SqlServerLegacyAgentTest.java
index 6f70c164bb..f80564e7c2 100644
--- a/agents/drivers/sqlserver-legacy/src/test/java/com/dbx/agent/sqlserverlegacy/SqlServerLegacyAgentTest.java
+++ b/agents/drivers/sqlserver-legacy/src/test/java/com/dbx/agent/sqlserverlegacy/SqlServerLegacyAgentTest.java
@@ -61,6 +61,30 @@ class SqlServerLegacyAgentTest {
         ));
     }
 
+    @Test
+    void traditionalChineseSqlServer8RejectionsTriggerTheOldDriverFallback() {
+        Assertions.assertTrue(SqlServerLegacyAgent.shouldFallbackToJtds(
+            new SQLException("此驅動程式不支援 SQL Server 版本 8。")
+        ));
+        Assertions.assertTrue(SqlServerLegacyAgent.shouldFallbackToJtds(
+            new SQLException("此驅動程式不支援 SQL Server 8 版。")
+        ));
+        Assertions.assertTrue(SqlServerLegacyAgent.shouldFallbackToJtds(
+            new SQLException("此驅動程式不支援 SQL Server 版本 8.0。")
+        ));
+
+        SQLException chained = new SQLException("連線失敗");
+        chained.setNextException(new SQLException("此驅動程式不支援 SQL Server 版本 8。"));
+        Assertions.assertTrue(SqlServerLegacyAgent.shouldFallbackToJtds(chained));
+
+        Assertions.assertFalse(SqlServerLegacyAgent.shouldFallbackToJtds(
+            new SQLException("登入失敗：SQL Server 版本 8 的使用者 'sa' 無法登入。")
+        ));
+        Assertions.assertFalse(SqlServerLegacyAgent.shouldFallbackToJtds(
+            new SQLException("TLS 交握失敗：此驅動程式不支援 TLSv1。")
+        ));
+    }
+
     @Test
     void jtdsUrlUsesLegacySqlServerSyntax() {
         ConnectParams params = new ConnectParams(