Book Image

Apache Axis2 Web Services, 2nd Edition

By : Deepal Jayasinghe, Afkham Azeez
Book Image

Apache Axis2 Web Services, 2nd Edition

By: Deepal Jayasinghe, Afkham Azeez

Overview of this book

<p>Web services are gaining popularity and have become one of the major techniques for application integration. Due to the flexibility and advantages of using web services, you want to enable Web service support to your applications. This book is your gateway to learning all you need to know about the Apache Axis2 web service framework and its hands on implementation. <br /><br />Apache Axis2 Web Services, 2nd Edition is your comprehensive guide to implementing this incredibly powerful framework in practice. It gives you precisely what you need to know to develop a detailed practical understanding of this popular, modular and reliable web service framework.<br /><br />This book starts with a short and relevant introduction about the Axis2 1.5 framework and then plunges you straight into its architectural model.</p> <p>Learn to use and develop your own modules. Write a services.xml file so efficiently that you'll be creating more complex applications (rather than just POJOs) in no time.</p> <p>Learn how straightforward it really is to turn a Java class into a web service in Axis2. Experiment with different types of sessions in Axis2. Learn different patterns of Enterprise deployment. Ensure reliability in your web service - a major concern in most enterprise applications - with minimum impact on performance.<br /><br />This book will journey you through all this and more, giving you exactly what you need to learn Axis2 1.5 in the easiest way possible and create secure, reliable, and easy-to-use web services efficiently and systematically.</p>
Table of Contents (22 chapters)
Apache Axis2 Web Services
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
15
Building a Secure Reliable Web Service
Index

Contract first approach – starting from the WSDL


The easiest and a more suitable way of creating a web service is to start from the WSDL document. This is the method most followed when it comes to most of the enterprise level applications. As enterprise level applications usually have well defined business scenarios and corresponding business contracts, which can be presented in the form of a WSDL document, it makes sense to start from there. The point to note here is that once the client and the producer (service) have the WSDL document, it acts as a contract according to which the development should take place.

Axis2 has inbuilt support for the generation of service and client code, once you have the WSDL document. So in this case, as a service author, you only need to do the following:

  1. Generate the service code (service skeleton).

  2. Fill in the service skeleton according to the business logic.

  3. Run the generated Ant build file.

  4. Deploy the service archive file created by Ant into your application...