Whitespace Galore!

[Rick Ross <rr...@stupendousman.com>]

Hi all,

I've been running into two little oddities that I thought might be worth
some discussion.

1.  I was not able to redirect a page based on a JSTL condition tag (c:if,
c:choose, etc.) because the tags themselves would invariably pump some
\r\n's into the page.   This of course, caused a commit on the output stream
which disallowed any redirect actions.  So basically something like

<c:if test="${true}">
    <c:redirect url="otherplace.html" />
</c:if>

Will never redirect.

Now, remember that the code above is actually the same as :

<c:if test="${true}">[crlf][space][space][space]<c:redirect
url="otherplace.html" />[crlf]
</c:if>[crlf]

Even so, if leave you out the extra whitespace, like so:

<c:if test="${true}"><c:redirect url="otherplace.html" /></c:if>

It will still fail. taking a look at the _jsp.java file shows the culprit.
Very early on, a \r\n combo gets written to the output stream.  Naturally, I
have buffering set and autoFlush off.

Of course there are a dozen ways around this, so it's no big deal, but I
doubt that it is intentional and extra whitespace is my second point.

2.  There is a ton of whitespace all over my output.  Many many newlines ...
so many, that it is hard to examine the source of the output.   I think that
most of it is in the bodies of conditionals...   anyone else having
problems?


Rick Ross

         "Any sufficiently complex technology is indistinguishable from
garbage"


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Re: Whitespace Galore!

[Neil Zanella <nz...@cs.mun.ca>]

On Mon, 30 Jun 2003, Rick Ross wrote:

> 2.  There is a ton of whitespace all over my output.  Many many newlines ...
> so many, that it is hard to examine the source of the output.   I think that
> most of it is in the bodies of conditionals...   anyone else having
> problems?

Yes!!! This is the one feature I miss the very most about PHP tags, which, 
are such that an entire line enclosed within <?php /* ... */ ?> will be
stripped off together with the newline character that follows it for
pretty output! I really cannot understand why JSP doesn't do this
and hope that this will change in the future:

Q: How can you tell a page is written with JSP?
A: If when you view page source in your web browser you see that there are 
a lot of runs of consecutive blank lines! It looks sloppy!!! ... and is 
unfriendly and makes the output hard to debug and read!

There must be a way around it; there must, otherwise JSP sucks.

So how can it be achieved?

Regards,

Neil


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