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Posted to users@tomcat.apache.org by Vernon _ <vw...@hotmail.com> on 2006/11/06 22:10:23 UTC
Application Path
I have another new application deployed in a non-root directory. I need to
have absolute paths for CSS and Javascript in order to import them properly
with differenct level structure of JSP files. I can deploy it as the root
application or add the application name in the absolute path. Neither
solutions are very good. Any good practise to solve this issue?
Thanks,
Vernon
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Re: Application Path
Posted by Harry <ha...@mantheakis.freeserve.co.uk>.
Using the BASE tag means that you only need to change that one single value
- all the other URLs in your pages would stay fixed, because they are
relative to the BASE tag.
So, for example, you could have a common tag library that sets the BASE tag
value dynamically for all your pages - IOW, one tag library services all
your pages.
As for altering the code between development and deployment, the solutions
to that are trivial: if you are rebuilding between development and
deployment, then use a different build property to set a runtime property
that your tag library references.
If you're using the same build, then have a runtime variable that you can
set, which you tag library references.
I've used this method, and I recommend it. It's simple, and portable.
Harry Mantheakis
> Thanks for all your information.
>
> I was thinking of a application configuration solution so that I don't need
> to alter the code between development and deployment. I have several
> applications in various development phases in my box. I try to figure to
> handle them together.
>
>
> Vernon
> __________________________________________________________
> http://www.vicina.info
>
>
> ----Original Message Follows----
> From: Harry <ha...@mantheakis.freeserve.co.uk>
> Reply-To: "Tomcat Users List" <us...@tomcat.apache.org>
> To: Tomcat Users List <us...@tomcat.apache.org>
> Subject: Re: Application Path
> Date: Tue, 07 Nov 2006 09:31:27 +0000
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>
> Alternatively, you can set a BASE reference within the HEAD element of each
> page, and then use relative-paths in all your URLs:
>
>
> <head>
> ...
> <base href="http://www.webadorable.com/your-app-context-name-here/"/>
> ...
> </head>
>
> ...
>
> <img src="relpath/to/image.jpg"/>
>
>
> The BASE value can (should!) be set dynamically, of course - with a tag
> library, or whatever.
>
> Notice that the BASE reference has a trailing slash, whilst your relative
> paths must start without a leading slash.
>
> Harry Mantheakis
>
>
>> Is there any reason you can't just have the paths composed dynamically?:
>>
>> <img src="${pageContext.request.contextPath}/webapp/relpath/to/image.jpg"
> />
>>
>> For the ROOT webapp, the expression will return an empty path, so it's
>> always correct.
>>
>> --David
>>
>> Vernon _ wrote:
>>>
>>> I have another new application deployed in a non-root directory. I
>>> need to have absolute paths for CSS and Javascript in order to import
>>> them properly with differenct level structure of JSP files. I can
>>> deploy it as the root application or add the application name in the
>>> absolute path. Neither solutions are very good. Any good practise to
>>> solve this issue?
>>>
>>> Thanks,
>>>
>>> Vernon
>>>
>>> _________________________________________________________________
>>> Find a local pizza place, music store, museum and morethen map the
>>> best route! http://local.live.com?FORM=MGA001
>>>
>>>
>>> ---------------------------------------------------------------------
>>> To start a new topic, e-mail: users@tomcat.apache.org
>>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>>> For additional commands, e-mail: users-help@tomcat.apache.org
>>>
>>
>>
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>>
>
>
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Re: Application Path
Posted by Vernon _ <vw...@hotmail.com>.
Thanks for all your information.
I was thinking of a application configuration solution so that I don't need
to alter the code between development and deployment. I have several
applications in various development phases in my box. I try to figure to
handle them together.
Vernon
__________________________________________________________
http://www.vicina.info
----Original Message Follows----
From: Harry <ha...@mantheakis.freeserve.co.uk>
Reply-To: "Tomcat Users List" <us...@tomcat.apache.org>
To: Tomcat Users List <us...@tomcat.apache.org>
Subject: Re: Application Path
Date: Tue, 07 Nov 2006 09:31:27 +0000
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Alternatively, you can set a BASE reference within the HEAD element of each
page, and then use relative-paths in all your URLs:
<head>
...
<base href="http://www.webadorable.com/your-app-context-name-here/"/>
...
</head>
...
<img src="relpath/to/image.jpg"/>
The BASE value can (should!) be set dynamically, of course - with a tag
library, or whatever.
Notice that the BASE reference has a trailing slash, whilst your relative
paths must start without a leading slash.
Harry Mantheakis
> Is there any reason you can't just have the paths composed dynamically?:
>
> <img src="${pageContext.request.contextPath}/webapp/relpath/to/image.jpg"
/>
>
> For the ROOT webapp, the expression will return an empty path, so it's
> always correct.
>
> --David
>
> Vernon _ wrote:
>>
>> I have another new application deployed in a non-root directory. I
>> need to have absolute paths for CSS and Javascript in order to import
>> them properly with differenct level structure of JSP files. I can
>> deploy it as the root application or add the application name in the
>> absolute path. Neither solutions are very good. Any good practise to
>> solve this issue?
>>
>> Thanks,
>>
>> Vernon
>>
>> _________________________________________________________________
>> Find a local pizza place, music store, museum and morethen map the
>> best route! http://local.live.com?FORM=MGA001
>>
>>
>> ---------------------------------------------------------------------
>> To start a new topic, e-mail: users@tomcat.apache.org
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>>
>
>
> ---------------------------------------------------------------------
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> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>
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Re: Application Path
Posted by Harry <ha...@mantheakis.freeserve.co.uk>.
Alternatively, you can set a BASE reference within the HEAD element of each
page, and then use relative-paths in all your URLs:
<head>
...
<base href="http://www.webadorable.com/your-app-context-name-here/"/>
...
</head>
...
<img src="relpath/to/image.jpg"/>
The BASE value can (should!) be set dynamically, of course - with a tag
library, or whatever.
Notice that the BASE reference has a trailing slash, whilst your relative
paths must start without a leading slash.
Harry Mantheakis
> Is there any reason you can't just have the paths composed dynamically?:
>
> <img src="${pageContext.request.contextPath}/webapp/relpath/to/image.jpg" />
>
> For the ROOT webapp, the expression will return an empty path, so it's
> always correct.
>
> --David
>
> Vernon _ wrote:
>>
>> I have another new application deployed in a non-root directory. I
>> need to have absolute paths for CSS and Javascript in order to import
>> them properly with differenct level structure of JSP files. I can
>> deploy it as the root application or add the application name in the
>> absolute path. Neither solutions are very good. Any good practise to
>> solve this issue?
>>
>> Thanks,
>>
>> Vernon
>>
>> _________________________________________________________________
>> Find a local pizza place, music store, museum and morethen map the
>> best route! http://local.live.com?FORM=MGA001
>>
>>
>> ---------------------------------------------------------------------
>> To start a new topic, e-mail: users@tomcat.apache.org
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>>
>
>
> ---------------------------------------------------------------------
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Re: Application Path
Posted by Christopher Schultz <ch...@christopherschultz.net>.
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Vernon,
> That can solve the problem. However, is it little silly to prefix
> ${pageContext.request.contextPath} into every single URLs in the JSP files?
It's not silly if that's what you want.
Some frameworks provide either JSP taglibs or some other mechanism for
essentially allowing the framework to do that work for you. For
instance, I use struts and velocity as my framework and content
generation tools. The velocity-tools project includes "tools" that allow
me to get velocity to work very well with both the servlet container and
struts. For instance, many of my links look like this:
<a href="$link.setRelative('/relative/path/foo.do')">blah blah</a>
The "link" tool knows that it should always put the context path of the
currently executing webapp before the relative URI that I gave it. Of
course, it has all kinds of other nice things that interact with struts,
too, like being able to use named URIs instead of explicit ones, so I
can change them in a single place and not have to go changing every file
that references it.
That was a long way out of the way, but I figured it was worth
mentioning. I'm not saying that you should switch to struts or anything
like that. I'm just saying that this is the way the servlet world works,
and that many frameworks provide tools for getting around the
"silliness" you describe.
- -chris
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Re: Application Path
Posted by Vernon _ <vw...@hotmail.com>.
That can solve the problem. However, is it little silly to prefix
${pageContext.request.contextPath} into every single URLs in the JSP files?
Vernon
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http://www.vicina.info
>Is there any reason you can't just have the paths composed dynamically?:
><img src="${pageContext.request.contextPath}/webapp/relpath/to/image.jpg"
>/>
>For the ROOT webapp, the expression will return an empty path, so it's
>always correct.
>--David
Vernon _ wrote:
>
>I have another new application deployed in a non-root directory. I need to
>have absolute paths for CSS and Javascript in order to import them properly
>with differenct level structure of JSP files. I can deploy it as the root
>application or add the application name in the absolute path. Neither
>solutions are very good. Any good practise to solve this issue?
>
>Thanks,
>
>Vernon
>
>_________________________________________________________________
>Find a local pizza place, music store, museum and more
then map the best
>route! http://local.live.com?FORM=MGA001
>
>
>---------------------------------------------------------------------
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Re: Application Path
Posted by David Smith <dn...@cornell.edu>.
Is there any reason you can't just have the paths composed dynamically?:
<img src="${pageContext.request.contextPath}/webapp/relpath/to/image.jpg" />
For the ROOT webapp, the expression will return an empty path, so it's
always correct.
--David
Vernon _ wrote:
>
> I have another new application deployed in a non-root directory. I
> need to have absolute paths for CSS and Javascript in order to import
> them properly with differenct level structure of JSP files. I can
> deploy it as the root application or add the application name in the
> absolute path. Neither solutions are very good. Any good practise to
> solve this issue?
>
> Thanks,
>
> Vernon
>
> _________________________________________________________________
> Find a local pizza place, music store, museum and more…then map the
> best route! http://local.live.com?FORM=MGA001
>
>
> ---------------------------------------------------------------------
> To start a new topic, e-mail: users@tomcat.apache.org
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
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