Book Image

Apache CXF Web Service Development

By : Naveen Balani, Rajeev Hathi
Book Image

Apache CXF Web Service Development

By: Naveen Balani, Rajeev Hathi

Overview of this book

<p>Apache CXF framework helps you to develop a standards-based programming model and also provides a flexible deployment model for deploying web services. Developing SOAP and RESTful applications can be made easy by using Apache CXF framework. However, getting started with developing web services using the Apache CXF framework is not easy.<br /><br />This is the first book that gives details on how to use the Apache CXF framework for developing SOAP and REST web services. It is a hands-on practical guide that simplifies working with CXF framework as it covers all major aspects with real-world examples. The chapters cover the various CXF features in detail and each has systematic steps with practical, simple examples to implement these features on your web services. <br /><br />The book introduces the Apache CXF framework and its features such as Frontend API, Data Bindings, Transports, Spring-based configuration, and CXF tools. It also has chapters on SOAP and RESTful services. It will help you create RESTful services that support XML as well as the widely accepted Java Script Object Notation (JSON) format. It explains the components of CXF architecture that help developers customize the Apache CXF framework to suit the target application. The book covers both code-first and contract-first approaches for service deployment. You will see how to develop services in a flexible deployment model offered by CXF, unit test them in a stand-alone environment, and finally promote them in an application server environment.<br /><br />The instructions in this book will help developers to build their application according their requirements by using any of the frontends supported by Apache CXF framework. The various CXF frontend APIs covered in this book provide a wide variety of options in developing and deploying your application.<br /><br />The book introduces some advanced concepts such as Interceptors and features that will add extra capability to your service component. It will help you take advantage of different transport features offered by the CXF runtime such as HTTP, HTTP(S), and JMS protocols.<br />Finally, the book mentions various tools that help developers creating web services as well as creating Java and JavaScript-based web services clients which invoke a real-world .NET web service. These tools are standard batch files that can be easily executed from the Windows command shell by following the instructions in the book.</p>
Table of Contents (16 chapters)
Apache CXF Web Service Development
Credits
About the Authors
About the Reviewer
Preface
Index

Developing custom invoker


We will take the same use case of authentication security check discussed in the earlier Developing custom interceptor section. The users of the Order Process web service will be authenticated. Again, as part of assumption, we will have the user credentials already defined in the SOAP header. The components to be developed will remain the same. There will be changes to only two components, OrderProcessUserCredentialInterceptor.java and OrderProcessServerStart.java. We will call our class file OrderProcessUserCredentialInterceptor.java as AuthenticationInvoker.java. You will now see how we can use invoker to perform authentication before the processOrder method is called on the OrderProcess service.

The following code illustrates the AuthenticationInvoker class:

import java.util.List;

import javax.xml.namespace.QName;

import org.apache.cxf.binding.soap.SoapHeader;
import org.apache.cxf.common.util.ClassHelper;
import org.apache.cxf.headers.Header;
import org.apache...