Hello World! Application
Requirements
|
This article provides a rapid
introduction to Struts by building a complete—although
basic—application from scratch. The goal of this article
is to enable a competent developer to quickly grasp all
the basics of how to build Struts applications.
The article continues the longstanding
tradition of developing a first program in a new language
that simply prints Hello World!. This enables
developers to quickly grasp the fundamentals of how the
program works without forcing them to think too much
about the application requirements. To demonstrate some
of the important features of Struts, however, the
application built here will have a few additional
features. |
The requirements of this application are
very basic. They are as follows:
-
Enable the user to enter a name to say
Hello! to and output the string Hello<
name>!.
-
Don't let the user submit the entry form
without entering a name. If he does, provide an error
message to help him fill the form out correctly.
-
To add more Controller functionality (and
have a bit more fun), the application should not allow the
user to say hello to people they're "not allowed" to talk
to.
-
To demonstrate Model components, the
application should use a Model component to save the name
entered for later.
This basic application provides a little
bit of functionality in all three of the Model, View, and
Controller components. |
