This post is based on one I wrote a few years ago about building contract first web services with Apache CXF and Spring. The previous post didn't use Spring Boot and most of the Spring and CXF configuration was via XML. This post moves things forward a bit by using the latest version of CXF and Spring Boot.
Sample App
We're going to build a simple Spring Boot app that exposes SOAP web service using Apache CXF. The service will have a single operation that takes an account number and returns bank account details. If you're impatient and want to jump ahead you can grab the full source code from GitHub.