This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
NotSerializableException indicates that some object that's send over the line is not Serializable. Check if your return object implements the java.io.Serializable interface. If not do so, and make sure all its attributes are Serializable as well.
Hope this helps.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com