February 2005
Intermediate to advanced
528 pages
12h 53m
English
Content preview from Jakarta Struts CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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1.8. Generating Struts Configuration Files Using XDoclet
Problem
When you make changes to or create a new
Action
or ActionForm, you have to make the corresponding
changes to Struts configuration files.
Solution
Use the XDoclet tool, in conjunction with Ant, to process annotations in your Java code for automatic generation of the struts-config.xml file.
Discussion
Modern software applications are commonly composed of executable code as well as text configuration files. This approach makes it easier to port your application between environments and reduces the amount of code you have to change for different deployments. However, it adds an additional burden: keeping the code and the configuration files consistent with each other.
The XDoclet tool, originally developed for use in Enterprise JavaBean development, addresses this problem. With XDoclet, the developer places annotations, similar to JavaDoc tags, in the code that describes configuration attributes related to the code. At build time, you employ custom Ant tasks that use XDoclet to process these tags and generate the corresponding XML configuration files.
For Struts, XDoclet can generate the following elements for the struts-config.xml file:
actionelementsform-beanelements
In addition, XDoclet can
create the
field-level Struts Validator configuration, typically found in the
validation.xml file. Finally, if you are mapping
properties of EJB Entity Beans to Struts
ActionForms, XDoclet can generate the
ActionForm Java source ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.