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

Core modules


The term core means to categorize key components of Axis2. The set of core modules consists of the minimal number of modules that need to set up an Axis2 system. In other words, once you have all the core modules (.jar files) and other dependency libraries, you can use Axis2 to deploy a service and to invoke a remote service. The following is the list of core modules in Axis2:

  • XML processing model: One of the key components of any messaging system is the message processing and manipulating system. System usability and performance wholly depends on the efficiency of the message processing component. As mentioned earlier, Axis2 was built as a SOAP processing framework and SOAP is a specialized version of XML. Hence, any XML processing framework can be employed to process SOAP messages. Axis1 uses DOM as its message representation mechanism. However, Axis2 introduced a fresh, XML InfoSet-based representation for SOAP messages. It is known as AXIs Object Model (AXIOM). AXIOM encapsulates...