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Posted to users@tomcat.apache.org by je...@abbott.com on 2002/03/12 18:19:52 UTC
Re: Large pages not completely displayed with IE 5.x and Tomcat 4 .0.x
I ran into what I think is this problem before too, and here's what I ended up
finding...
I noticed the same thing as you, that the HTML was incomplete. My HTML was
stopped right in the middle of a big list of SELECT OPTION's. I thought there
was something wrong with the particular option that it died on, but then I
added some more options to the database before that option. The HTML then
stopped on a different option. I noticed that the HTML source for the page
with the problem was always 16k. I checked my JSP page buffer size, thinking
that it was 16k and there was something causing it to not flush subsequent
buffers, but I found that my buffer was set to the default of 8k, so I was
getting 2 buffers' worth of output. I checked the logs and found that I had
gotten a run-time exception in the execution of my JSP page towards the end of
it. So, what it looked like was that, if it got a run-time exception but had
already sent back a full buffer, it was not sending the usual exception stack
trace in the resulting page. I was thinking that this might be a Catalina bug
(was using 4.0.1), but I didn't investigate this further after I fixed the
cause of the run-time error.
Hope this helps.
-Jeff
"Robin Lee"
<tech_support To: "Tomcat Users List" <to...@jakarta.apache.org>, "Michael
@uls.com> Gerdau" <mg...@technosis.de>
cc:
03/12/02 Subject: Re: Large pages not completely displayed with IE 5.x and
11:05 AM Tomcat 4 .0.x
Please
respond to
"Tomcat Users
List"
Hi,
I had the same problem as you did... One of my pages would not completely
load...
Using: Tomcat 4.02, j2sdk1.4. Windows 2K/NT, doesn't matter.. happens on
both.
At first I thought that it was because it was large. But it wasn't the
problem. The page in question returned about 150K of html code. Another
page returned 600K and that ALWAYS displayed in its entirety. So, after
some checking and testing, i discovered it is because i had too many objects
open. (Instantiated objects galore).
One thing i did to make it work is to make sure that each object that i
instantiate is opened ONCE... (I use a java mapping strategy to get data
from the database).
Once i did that, the rest of the data would show up with no problem...
That is one thing i would check and see if there are too many objects being
instantiated (same ones all the time). That's my suggestion.
Good luck,
If that's not it, then i'm not sure what else it could be. :)
...Robin
----- Original Message -----
From: "Michael Gerdau" <mg...@technosis.de>
To: "Tomcat Users List" <to...@jakarta.apache.org>
Sent: Tuesday, March 12, 2002 7:08 AM
Subject: RE: Large pages not completely displayed with IE 5.x and Tomcat 4
.0.x
> > I think an obvious first couple of questions:
> > 1. Is the page competing execution or is it throwing an exception
> >or perhaps hanging up due to deadlock?
>
> Not that I'm aware of. I get the effect by simply logging onto the
> webapp from a different machine immediately after starting tomcat.
> No concurrent users on Tomcat.
>
> This happens both with HTTP/1.1 on port 8080 and HTTP/1.0 on 8082
> (both using the default configuration as of server.xml)
>
> > 2. Are you ever clicking the stop button in IE (perhaps causing the
> >browser to give up before the connection is completed?)
>
> No.
>
> >> Hi !
> >>
> >> I have the following problem:
> >> I'm running Tomcat 4.0.x (x == 1, 2 or 3) standalone on a Win2000
> >> machine. I have a WebApp (written with Struts) that accesses a RDBMS
> >> and creates pages which occasionally are 100+ kB in size. This takes
> >> some time (between 20-50 seconds).
> >>
> >> When I run Internet Explorer 5.0 or 5.5 on the machine running
> >> Tomcat (e.g. my development environment) everything works
> >> fine. When I'm
> >> trying to access those pages from another machine within the
> >> local network
> >> (e.g. the production environment) some of these pages don't display
> >> completely. Examining the HTML inside the browser reveals
> >> they are indeed
> >> incomplete.
> >>
> >> What could cause this ?
> >> What additional info would be needed to debug this ?
> >>
> >> Any help appreciated, thank you,
> >> Michael
>
> --
> Vote against SPAM - see http://www.politik-digital.de/spam/
> Michael Gerdau email: mgd@technosis.de
> You mean you think Windows XP **ISN'T** a joke?!
> PGP-keys available on request or at public keyserver
>
>
>
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Re: Large pages not completely displayed with IE 5.x and Tomcat 4 .0.x
Posted by Michael Gerdau <mg...@technosis.de>.
Thanks to all who responded !
Once I knew what to look for I finally solved my problem:
indeed it turned out to be an exception raised on the server close
to the very end of producing the HTML which didn't appear on the
Tomcat screen but only in one of the logfiles in the log dir.
After fixing that exception everything works fine.
This definitely made my day !
Thank you again, best,
Michael
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