Re: JSP Web-Development [newbie]

From:
=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>
Newsgroups:
comp.lang.java.programmer
Date:
Wed, 28 Jul 2010 20:25:00 -0400
Message-ID:
<4c50ca57$0$272$14726298@news.sunsite.dk>
On 28-07-2010 14:37, Chris Riesbeck wrote:

On 7/28/2010 12:31 PM, pmz wrote:

Dear Group,

1. At the beginning I'd like to apologize you for any mistakes or
misunderstood's, which might occur in message below, but I'm a quite
beginner in JSP so maybe some of my problems aren't really problems ;)
My Java knowledge is intermediate, but the structures of JSP or JSF or
any other frameworks is pretty bad, but I do not have any idea how to
start.


Personally, I prefer JSTL over straight JSP, to reduce jumping back and
forth between HTML and Java syntax. So iteration over a collection is

<ul>
<c:forEach var="item" items="${myObj.thingies}">
<li><c:out value="${item}" /></li>
</c:forEach>
</ul>

instead of

<ul>
<% for (Object item : myObj.getThingies()) { %>
<li><%= item %></li>
<% } <%>
</ul>


Very good advice.

With newer versions:

<li><c:out value="${item}" /></li>

can even be written as:

<li>${item}</li>

2. I'm trying to build bit complex website based on JSP (which I've
done a lot in PHP, so the main idea of website engineering is quite
common for me), but I a bit confused about the architecture/structure
of a JSP webpage building. The problem is, I'm not able to imagine in
my mind, how the architecture (directory structure) should be found,
how do I divide the template files, the engine core, etc.


You can do almost anything, but don't put pages and other user-viewable
items under WEB-INF. WEB-INF is for libraries, class files, and XML
configuration files. So you could have

webapp/
pages/
jsp files
styles/
css files
images/
...
WEB-INF/
classes/
...
...

and other flatter or more nested structures as you choose.


JSP pages in WEB-INF are not directly accessible, but they can
be used from servlet / action classes.

Some even consider that good practice.

I don't agree, but ...

Arne

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