Unable to deserialize Vector when using JDK 7 --------------------------------------------- Key: JBSER-128 URL: https://issues.jboss.org/browse/JBSER-128 Project: JBoss Serialization Issue Type: Bug Affects Versions: 1.0.5.FINAL Environment: JBoss EAP 5.2 on JDK 7 Reporter: Brad Maxwell Assignee: Brad Maxwell JDK 7 changed the writeObject of Vector, ObjectOutputStreamProxy.writeFields is being called, which write the fields out not as a FinalContainer , writeMyself checks the type and for non FinalContainer it just writes the object in metho FieldsContainer.writeField as: out.writeByte(DataContainerConstants.OBJECTREF); out.writeObject(value); When reading, RegularObjectPersister is expecting all FinalContainer. So it looks like either FinalContainer.writeField may need to wrap the objects in a FinalContainer or on the reading side it needs to read the non wrapped fields before reading the wrapped fields. public void writeFields() throws IOException { if (currentContainer!=null) { currentContainer.writeMyself(this); currentContainer=null; } JDK 6 -------------------------------------------------------------------------- public class Vector<E> extends AbstractList<E> private synchronized void writeObject(java.io.ObjectOutputStream s) throws java.io.IOException { s.defaultWriteObject(); } JDK 7 -------------------------------------------------------------------------- private void writeObject(java.io.ObjectOutputStream s) throws java.io.IOException { final java.io.ObjectOutputStream.PutField fields = s.putFields(); final Object[] data; synchronized (this) { fields.put("capacityIncrement", capacityIncrement); fields.put("elementCount", elementCount); data = elementData.clone(); } fields.put("elementData", data); s.writeFields(); } org.jboss.serial.exception.SerializationException: Excepted to be int at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readInt(DataContainer.java:1050) at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:333) at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:290) at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:258) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:412) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:82) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:847) at test.Serial.main(Serial.java:28) Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to org.jboss.serial.finalcontainers.IntegerContainer at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readInt(DataContainer.java:1046) ... 7 more java.io.EOFException at java.io.DataInputStream.readFully(DataInputStream.java:197) at org.jboss.serial.util.StringUtil.pullDataToBuffer(StringUtil.java:191) at org.jboss.serial.util.StringUtil.readString(StringUtil.java:238) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectInput.readUTF(DataContainer.java:757) at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:322) at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:290) at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:258) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:412) at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:82) at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectInput.readObject(DataContainer.java:643) at org.jboss.serial.io.JBossObjectInputStream.readObjectOverride(JBossObjectInputStream.java:163) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:363) at test.Serial.main(Serial.java:48)