[fix](auditlog) fix AuditLoaderPlugin occasional occurrence garbled Chinese characters in audit logs (#61902)

LuGuangming · web-flow · commit dded5cd2898e · 2026-04-09T14:40:05.000+08:00
diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/AuditLogHelper.java b/fe/fe-core/src/main/java/org/apache/doris/qe/AuditLogHelper.java
@@ -185,7 +185,7 @@ public static String truncateByBytes(String str, int maxLen, String suffix) {
         }
         Charset utf8Charset = Charset.forName("UTF-8");
         CharsetDecoder decoder = utf8Charset.newDecoder();
-        byte[] sb = str.getBytes();
+        byte[] sb = str.getBytes(utf8Charset);
         ByteBuffer buffer = ByteBuffer.wrap(sb, 0, maxLen);
         CharBuffer charBuffer = CharBuffer.allocate(maxLen);
         decoder.onMalformedInput(CodingErrorAction.IGNORE);
diff --git a/fe_plugins/auditloader/src/main/java/org/apache/doris/plugin/audit/custom/AuditLoaderPlugin.java b/fe_plugins/auditloader/src/main/java/org/apache/doris/plugin/audit/custom/AuditLoaderPlugin.java
@@ -199,7 +199,7 @@ private String truncateByBytes(String str) {
         }
         Charset utf8Charset = Charset.forName("UTF-8");
         CharsetDecoder decoder = utf8Charset.newDecoder();
-        byte[] sb = str.getBytes();
+        byte[] sb = str.getBytes(utf8Charset);
         ByteBuffer buffer = ByteBuffer.wrap(sb, 0, maxLen);
         CharBuffer charBuffer = CharBuffer.allocate(maxLen);
         decoder.onMalformedInput(CodingErrorAction.IGNORE);

Original file line number	Diff line number	Diff line change
`@@ -185,7 +185,7 @@ public static String truncateByBytes(String str, int maxLen, String suffix) {`
`185`	`185`	`}`
`186`	`186`	`Charset utf8Charset = Charset.forName("UTF-8");`
`187`	`187`	`CharsetDecoder decoder = utf8Charset.newDecoder();`
`188`		`- byte[] sb = str.getBytes();`
	`188`	`+ byte[] sb = str.getBytes(utf8Charset);`
`189`	`189`	`ByteBuffer buffer = ByteBuffer.wrap(sb, 0, maxLen);`
`190`	`190`	`CharBuffer charBuffer = CharBuffer.allocate(maxLen);`
`191`	`191`	`decoder.onMalformedInput(CodingErrorAction.IGNORE);`
Original file line number	Diff line number	Diff line change
`@@ -199,7 +199,7 @@ private String truncateByBytes(String str) {`
`199`	`199`	`}`
`200`	`200`	`Charset utf8Charset = Charset.forName("UTF-8");`
`201`	`201`	`CharsetDecoder decoder = utf8Charset.newDecoder();`
`202`		`- byte[] sb = str.getBytes();`
	`202`	`+ byte[] sb = str.getBytes(utf8Charset);`
`203`	`203`	`ByteBuffer buffer = ByteBuffer.wrap(sb, 0, maxLen);`
`204`	`204`	`CharBuffer charBuffer = CharBuffer.allocate(maxLen);`
`205`	`205`	`decoder.onMalformedInput(CodingErrorAction.IGNORE);`