Showing posts from January, 2013

Axis2 Web Service Client Tutorial

Axis2 is a Java framework that provides comprehensive support for exposing and consuming web services. This short post will look at its SOAP client support and how it can be used to get a simple web service client up and running.
For convenience I'm going to be calling a web service that I recently built as part of another blog post.  If you don't already have a web service to call you can grab the full source code for my sample service from github. Simply run a Maven build and deploy the WAR to your Servlet container.

What is a Web Service Client
This post doesn't attempt to explain the detailed inner workings of a web service client, but its still pretty useful to have an idea of what's going on under the hood. Most web service clients provide the following
A client side proxy for the remote service we want to call, that allows our application to invoke a SOAP service using a simple method call. The proxy insulates our application from the intricacies of s…

Spring Web Services Tutorial

I've recently written a more up to date version of this post which describes how to build a contract first web service using Apache CXF. Check it out here.

Modern enterprise applications are rarely stand alone and often rely on data and services provided by external systems. In order for different types of systems to communicate there must be a  communication protocol of some sort, a standard way of sending and receiving messages in a format that is recognised and supported by all major platforms. SOAP (Simple Object Application Protocol) is such a protocol, and allows applications to communicate by exchanging messages in a standard XML format.
SOAP Web Services provide a platform agnostic integration mechanism that allows disparate systems to exchange data regardless of the platform they are running on. For example, SOAP web services are commonly used to integrate .NET applications with applications running on the Java platform. Almost all modern platforms and …