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

Deployment descriptors


The flexibility and extensibility of Axis2 is focused on its deployment descriptors as well. Rather than working with one configuration file, Axis2 has different configuration files for different levels of configuration. For example, let's say that you want to have different types of configuration for different levels; then, having multiple configuration files for different levels solves the problem for you. There are three types of descriptors or configuration files in Axis2, namely:

  • Global descriptor (axis2.xml)

  • Service descriptor (services.xml)

  • Module descriptor (module.xml)

Global descriptor or axis2.xml

As mentioned earlier, the configuration in Axis2 can be specified using XML descriptors. This gives you much more flexibility for extending and changing Axis2. No need to go and change the code to have a different configuration. Even for core functionality, it's the same. If you consider Axis2's global configuration file—axis2.xml—it has all the minimal configurations...