November 2002
Intermediate to advanced
464 pages
14h 34m
English
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Appendix A. Changes Since Struts 1.0
There have been many changes to the Struts framework between Versions 1.0 and 1.1. Although the changes were discussed throughout this book, this appendix consolidates the changes and highlights the most important of the new features.
ActionServlet and RequestProcessor
A new class called
RequestProcessor
was added to the framework in
Struts 1.1. This class takes over much of the work that the
ActionServlet class performed in previous
versions. With 1.1, you can still configure the class name of the
ActionServlet that you want to use for an
application in the web.xml file,
but the RequestProcessor now carries out much of
the real request-processing work.
By default, applications use the
org.apache.struts.action.RequestProcessor class to
handle all incoming requests. You are not required to do anything if
the default behavior suits your requirements. You can, however,
choose to override the default implementation with one of your own.
You can switch implementations by configuring the
controller element in the Struts configuration
file. See Chapter 4 for more details on
configuring the controller element.
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