Java 2EE and XML Development

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Building the controller servlet 215 Building the ApplicationMenu component 217Building the ComponentLocator 218 Building the BugAccessorBean 221 Building the XSLTFilter 223

6.7    Structuring application data 224

6.8    The Amaya web service 225

6.9    Running the application 229

Installation 229 Viewing the main menu 230 Viewing common system problems 231 Viewing and updating the Amaya problem list 231 Inspecting the web services SOAP messages 232

6.10 Summary 233

appendix A Design patterns for J2EE and XML 235 appendix B Distributed application security 243 appendix C The Ant build tool 249 resources 265 index 269

Enterprise Java development and XML are two of the hottest topics in technology today. Both riddled with acronyms and buzzwords, they are also two of the most poorly understood and abused technologies around. The potential to build platform-neutral, vendor-independent systems has created a flurry of development and a host of new standards. It seems the list of APIs and specifications grows longer and more complex every day.

In early 2000, we decided the time was right to write a book about using XML technology in enterprise Java applications. It occurred to us that many books had been written on either XML or J2EE, but none of them really addressed the subjects together. We also recognized a failing in the content of existing books, which focus heavily on API details and “Hello, world! ” examples while skirting the more complex issues of architecture, design tradeoffs, and effective techniques for developing distributed systems.

This book is intended to fill the gap between books on J2EE and those on XML. It demystifies the buzzwords, contains frank discussions on the capabilities and appropriate use of various enterprise Java and XML tools, and provides a logical context for deciding how to structure your XML-enabled J2EE applications. We hope you enjoy it.

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