In my previous post I showed how to create RESTful services using Spring Framework. For representation of resources in XML I used JAXB and I followed the bottom-up approach (I wrote the Java classes and I let to generate XML/XSD from Java classes). In this post I will demonstrate how you can generate the same Java classes (
UserList) from XML Schema (XSD) during Maven build, therefore using a top-down approach. For generation of Java classes from XML Schema during Maven build I will use Java.net Maven 2 JAXB 2 Plugin.
Along with the default generation of Java classes from XML Schema using
xjc tool, I will add the following customizations:
- Making all the generated classes to implement
Serializable(useful when you want to use classes with some remote services: RMI, EJB, etc).
javax.xml.datatype.XMLGregorianCalendarfor fields generated from elements of type
- Generated classes should also have a generated
- Classes have to be annotated with
XmlRootElement(required by Spring Framework when classes are used to represent state in RESTful services).
- You can further enhance and customize the generation of Java classes using various plugins.
Project sources are available for download. So let’s start, step by step: