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Date: Mon, 08 Dec 2014 16:17:58 -0500
From: David kerber <dckerber@verizon.net>
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To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: My problem: I cannot successfully get or set a session attribute
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On 12/8/2014 4:04 PM, Jim Anderson wrote:
>
> David,
>
> I have to question your response. In the past, I have made errors in the
> serverside JSP file and the console has identified errors for me to the
> point were I have become dependent this feedback.
>
> I understand the separation of the client side vs the server side,
> (and I must confess that sometimes in the middle of debugging, I forget
> that it is there),
> but my assumption has been that when the JSP code is compiled by the
> tomcat environment, it gets sent errors back through the Firefox API
> that allows the errors to  be displayed in the console.
>
> I don't know the Firefox API, but I can believe it has hooks in the
> brower code that allows an application such as Tomcat to post
> information into the console. If fact, I would expect the browser
> console to have that kind of hook.

Hmm, I've never seen anything like that.  The only time I see server 
errors in the browser is when the server sends them as part of its HTTP 
response.  If the error output is swallowed on the server end and never 
makes it to the browser, the browser does not display anything.

I could certainly be missing something here, though...


>
> Jim
>
>
> On 12/08/2014 03:54 PM, David kerber wrote:
>> On 12/8/2014 3:49 PM, Jim Anderson wrote:
>>>
>>> Resolved!
>>>
>>> I apologize to everyone for taking a while to respond. It was a busy
>>> weekend and I was not at
>>> the computer. Thank you all for the responses.
>>>
>>> I read your emails about a half hour ago and ran my application to get
>>> fresh log files and to
>>> check them all. Sure enough in the log file, 'localhost.2014-12-08.log',
>>> I found an error message
>>> about the java code in my 's.jsp' file. I fixed the error and all is
>>> well now. I thought that I looked
>>> at this file the other day before sending in my question to the mailing
>>> list and I did not see the error messages then. I am going to guess that
>>> I am in error and the I did not actually look at the file, although I
>>> know I looked at most of the log files in the tomcat/logs directory.
>>>
>>> I was curious why the error did not show up in my firefox browser
>>> console, so I removed my fix and re-ran my application with the error in
>>> it. Sure enough, the error did not show up on the console.
>>
>> The reason it doesn't show up in your browser is that it's happening
>> on the server, not the client.  So the browser never knows that there
>> is an error.
>>
>>
>>
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