June 2014
Beginner to intermediate
304 pages
7h 25m
English
Content preview from Spring MVC Beginner'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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Chapter 7. Validate Your Products with a Validator
The most common expected behavior of any web application is that it should validate user data. Every time a user submits data into our web application, it needs to be validated. This is to prevent security attacks, wrong data, or simple user mistake errors. We don't have control over what users may type when submitting data into our web application. For example, they may type some text instead of a date, they may forget to fill mandatory fields, or suppose we used a length of 12 characters for a field in the database and the user entered data the length of 15 characters, then the data cannot be saved in the database. Similarly, there are lots of ways that a user can feed incorrect data into our ...
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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.