switched from readResolve to readObject

org.springframework.beans/src/main/java/org/springframework/beans/factory/support/DefaultListableBeanFactory.java

@@ -16,7 +16,9 @@
 
 package org.springframework.beans.factory.support;
 
+import java.io.IOException;
 import java.io.NotSerializableException;
+import java.io.ObjectInputStream;
 import java.io.ObjectStreamException;
 import java.io.Serializable;
 import java.lang.annotation.Annotation;
@@ -944,7 +946,7 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 	// Serialization support
 	//---------------------------------------------------------------------
 
-	protected Object readResolve() throws ObjectStreamException {
+	private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
 		throw new NotSerializableException("DefaultListableBeanFactory itself is not deserializable - " +
 				"just a SerializedBeanFactoryReference is");
 	}