December 2009
Intermediate to advanced
416 pages
10h
English
Content preview from Tomcat 6 Developer's GuideBecome 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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Request processing
As we saw in the last chapter, the context's basic valve first notifies any ServletRequestListener instances by invoking their requestInitialized() method, and then calls invoke() on the servlet wrapper's pipeline.
A wrapper's pipeline, by default, only has a single valve, the StandardWrapperValve. It calls its wrapper's allocate() method to obtain an instance of its wrapped servlet to process the incoming request.
If this is a normal servlet (that is, it does not implement the deprecated SingleThreadModel interface), then there will always be only one instance of a given servlet per wrapper, and it is this instance that is returned to service every incoming request for this servlet.
While servlets that are marked to be loaded ...
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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.