Moose is a framework for getting XML into and out of Java software. It integrates easily with Spring, Spring Web Services, or plain Java applications. It will generate an XML schema which describes your mapping configuration. Spring Web Services can wrap Moose's schema generator, creating a nice stack for simple, rapid development of SOAP Web services in Java.
XRDL is a language and tools for automatic client generation for XML-RPC services. It provides a way to create simple service definitions for XML-RPC services. It is inspired by WSDL, but aims for ease of use in the spirit of XML-RPC. It supports exporting complex (recursive) types, as well as methods. It includes a number of tools, allowing automatic XRDL generation for servers and clients written in PHP or C++/Qt.