February 2005
Intermediate to advanced
360 pages
7h 17m
English
Content preview from Apache Jakarta Commons: Reusable Java™ ComponentsBecome 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 2. FileUpload
The first Jakarta Commons component we will examine is FileUpload, an aptly named library that makes it easy to add file upload capability to your web application. By using this library, a user can send a file to a web server by simply selecting a file in a web form and clicking “upload.” Anyone who has used a popular web-based email client to send a file attachment has seen file upload functionality in action (for example, Yahoo! or Hotmail).
In this chapter, we’ll look at how this library works and show how to use the key classes.
Web and User Interfaces
When working with a JSP or servlet, you may be accustomed to retrieving data from a javax.servlet.ServletRequest using the getParameter() and getParameterNames() methods. ...
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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.