followup of c31ef9ad934688469826b39f35b709f712e56c75, use readObject(json, Object.class)
diff --git a/dubbo-serialization/dubbo-serialization-gson/src/main/java/org/apache/dubbo/common/serialize/gson/GsonJsonObjectInput.java b/dubbo-serialization/dubbo-serialization-gson/src/main/java/org/apache/dubbo/common/serialize/gson/GsonJsonObjectInput.java
index 9bac747..f6bbd13 100644
--- a/dubbo-serialization/dubbo-serialization-gson/src/main/java/org/apache/dubbo/common/serialize/gson/GsonJsonObjectInput.java
+++ b/dubbo-serialization/dubbo-serialization-gson/src/main/java/org/apache/dubbo/common/serialize/gson/GsonJsonObjectInput.java
@@ -91,7 +91,7 @@
     @Override
     public Object readObject() throws IOException, ClassNotFoundException {
         String json = readLine();
-        return gson.fromJson(json, String.class);
+        return gson.fromJson(json, Object.class);
     }
 
     @Override