September 2003
Intermediate to advanced
784 pages
18h 4m
English
Content preview from Servlets and JavaServer Pages™: The J2EE™ Technology Web TierBecome 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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Chapter 8. Filters
While Servlets and JSPs are extremely powerful and useful, they are not the best method of fulfilling every need of a Web Application developer. Often an application requires that some code is executed whenever a request is sent to any resource within an application, or maybe to a subset of resources. Security is a classic example of this. If an application requires a user to log on, then typically every resource within the application (except the logon page!) would need a security check to run before the resource was executed. Services such as these are often required by an application and most Web servers have a way of providing these. For example, Tomcat has “valves” and Microsoft Internet Information Server has IS API filters. ...
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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.