Question

I currently have to store a Java object of a class that is not implementing Serializable but is surely SOAP-serialized because was generated from a WSDL and is the input of a web service.

Standard Java serialization, in fact, throws exception. I have no control over the classes, and the guys who created the classes are not willing to mark them Serializable by hand, because proxies were automatically generated from the WSDL (wsdl2java? They haven’t told me…).

So I need to transform that object into something else by not possibly cycling over each field.

The .class files show the XML serialization attributes, so I suppose they are definitely XML-serializable.

How to perform manual XML serialization of a Java object? I can do that in C# but not in Java.

Thank you

Answer 1

You can do

 private byte[] encode(YourObject obj)
    {
        byte[] bytes = null;
        try
        {
            YourObject vsNew = new YourObject(obj)
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
                GZIPOutputStream out = new GZIPOutputStream(baos);
                XMLEncoder encoder = new XMLEncoder(out);
                encoder.writeObject(vsNew);
                encoder.close();
                bytes = baos.toByteArray();
        }
        catch (Exception e)
        {
            _log.error("Exception caught while encoding/zipping ", e);
        }
        return bytes;
    }


    /*
     * Decode the report definition blob back to the
     * ScheduledReport object.
     */
    private YourObject decode(byte[] bytes)
    {
        ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
        YourObject vSNew = null;
        try
        {
            GZIPInputStream in = new GZIPInputStream(bais);
            XMLDecoder decoder = new XMLDecoder(in);
            vSNew = (YourObject)decoder.readObject();
            decoder.close();
        }
        catch (Exception e)
        {
            _log.error("IOException caught while decoding/unzipping ", e);
        }
        return vSNew ;
    }