Fix inconsistent writeEvent and readEvent in default serialization (#15740)

NaraSky · web-flow · commit aed93d5abe21 · 2025-10-27T20:19:50.000+08:00
The default implementation of ObjectOutput.writeEvent calls writeObject(data), while ObjectInput.readEvent uses readUTF(). This causes IndexOutOfBoundsException in components like dubbo-serialization-fury. Change writeEvent to writeUTF(String) to match readEvent. Fixes #15737
diff --git a/dubbo-serialization/dubbo-serialization-api/src/main/java/org/apache/dubbo/common/serialize/ObjectOutput.java b/dubbo-serialization/dubbo-serialization-api/src/main/java/org/apache/dubbo/common/serialize/ObjectOutput.java
@@ -50,7 +50,7 @@ default void writeThrowable(Throwable obj) throws IOException {
     }
 
     default void writeEvent(String data) throws IOException {
-        writeObject(data);
+        writeUTF(data);
     }
 
     default void writeAttachments(Map<String, Object> attachments) throws IOException {

Original file line number	Diff line number	Diff line change
`@@ -50,7 +50,7 @@ default void writeThrowable(Throwable obj) throws IOException {`
`50`	`50`	`}`
`51`	`51`
`52`	`52`	`default void writeEvent(String data) throws IOException {`
`53`		`- writeObject(data);`
	`53`	`+ writeUTF(data);`
`54`	`54`	`}`
`55`	`55`
`56`	`56`	`default void writeAttachments(Map<String, Object> attachments) throws IOException {`