I just read this thread and didn't quite understand
it. If it means what it seems to mean on the surface,
I'm doing everything wrong.
I belong to the camp that thinks Java code in JSPs is evil. I happen to
think that tag libraries are wonderful.
JSPs are HTML documents that are empowered to
Debugging code in JSPs is very painful. Debugging tag libraries is the same
as debugging any ordinary Java object.
I pretty much agree with everything Harry says and I do so in spades
as they say. You can, as a tip, make debugging JSP easier by putting
the whole page in a try/catch exception
I just read this thread and didn't quite understand
it. If it means what it seems to mean on the surface,
I'm doing everything wrong.
Schematically, my typical JSP page looks like the
following (basically 100% code). Is this what Craig is
advising against?
%@ page errorPage=ErrorPage.jsp
I certainly wouldn't presume to speak for Craig, so this is just my own
answer...
Scriplets, that is, code in JSPs inside % %, is generally considered a
Bad Thing(tm) because it's too easy for business logic to sneak into the
presentation.
Now, there is I think room for debate about how far
The intent of JSP is that it is primarily HTML with just enough Java to
make things work. Ideally, you can hand a JSP to a web designer who is
not a programmer and they can make a pretty web page that works. In
some shops this works. As a productivity booster, this works in some
shops. But in
David Johnson wrote:
Using taglibs instead of code adds a level of obfuscation that, IMHO,
makes it difficult to get work done. I always end up taking the servlet
that was generated from the JSP and rewriting it so it works correctly,
performs adequately, and generates no side effects.
This has
Essentially you have written a servlet but packaged it as a JSP. Anytime it
becomes a trivial effort to hand transform a JSP into a servlet usually means
some refactoring is in order.
Personally I do not mind java code in JSP's but only if its structured. I try
not to rely on in-line java code
That's a good point Tim... I have to admit I've only used methods a
couple of times in JSPs, generally preferring all the code be inline
(except where there would be a lot of duplication, then I tend to make
utility classes). You make a good point though, I may start getting
into that habit
Don't ask to see my code. All I know is it works most of the time.
Really, I think it is a matter of circumstance. Each case is different and
allows for sway from one extreme to the other.
One word of caution to people just learning, is that as you move from
company to company expect to
There are lots of reasons why this is not the way to code JSPs, Dola.
Let's start with one: REUSABILITY.
If I can read between the lines in your code, you are essentially
using these classes to write HTML in sort of a Tiles way. This is
clearly a good thing and your ideas might be really
Thank you for the useful responses.
I agree with the person (sorry, tough to both type and
look up names...) who said that I wrote enough code
for it to be a servlet. In fact, I would rather write
a servlet! This is because I prefer to work with
JBuilder and JBuilder does an OK job aligning and
On the subject of your hope that this engenders a
long can the English be fixed in the subject before
this is archived? It's embarrassing.
--- Dakota Jack [EMAIL PROTECTED] wrote:
There are lots of reasons why this is not the way to
code JSPs, Dola.
Let's start with one: REUSABILITY.
If I
I'm quite late to this thread, so I'll stick to answering the one
technical question:
On Sun, Jan 23, 2005 at 12:03:36PM -0800, Dola Woolfe wrote:
: the code changes, the app needs to be restarted. The
: project I work with takes 2 min to start up so this is
: prohibitive
There's a reloadable
I work in a shop similar to the one you describe where individuals are
forced to fill multiple roles. I'm called upon to implement everything
from domain models to navigation menus. However, I find that keeping
the Java code that appears in JSP to a minimum helps in this situation
as well.
provides. Some logic does belong in JSP. However, the logic that
appears within pages should be limited to display logic. I've found
that Struts and JSTL are a great combination to accomplish such
separation.
IMHO this is basically the essence of Java code does no belong in well
designed JSP
snip
On Sun, 23 Jan 2005 12:09:39 -0800 (PST), Dola Woolfe
[EMAIL PROTECTED] wrote:
On the subject of your hope that this engenders a
long can the English be fixed in the subject before
this is archived? It's embarrassing.
/snip
Too late. Don't worry about it. What we type in here rarely has
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