Thanks Hans. This is what I thought. I don't remember what the problem was
but I did something like this and ran into problems before. When only a
single app is deployed, or a Servlet 2.1 or earlier, it is perfectly ok to
use /images/path/image.gif, or /path/page.jsp. But when working with
web-apps in Servlet 2.2, its necessary to properly map via relative paths.
So, I take it a link in the SAME root dir of any given web-app would not be
<a href="/file.jsp"></a> but <a href="file.jsp"></a> so that it is
"relative" to the location of the page that has the link in it?
Thanks.
> -----Original Message-----
> From: A mailing list about Java Server Pages specification and reference
> [mailto:[EMAIL PROTECTED]]On Behalf Of Hans Bergsten
> Sent: Tuesday, July 24, 2001 10:30 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Questoin about multiple web-apps deployed,and using paths
> to acc ess the different web-apps.
>
>
> "Duffey, Kevin" wrote:
> >
> > Hi,
> >
> > This has been asked before, but I have yet to see a reply that
> answers what
> > I am after. In my case, we have two (or more) web-apps deployed
> (as Servlet
> > 2.2 web-apps, either expanded or using .war files). In each
> web-app, I have
> > various JSP pages that have href links, form actions, and img
> src links. My
> > question is, can I use the following:
> >
> > <img src="/images/image.gif">
> >
> > or
> >
> > <a href="/path/page.jsp"></a>
> >
> > I recall seeing a problem with this when I deployed two web
> apps in the same
> > container. For some reason, I had to do ./path/page.jsp in
> order to get to
> > the page in the existing web-app. The main problem seems to lie in the
> > "root" web application and those that are accessed via a path.
> For example,
> > the root web application, which is our MAIN site, is ofcourse,
> the / root.
> > Therefore www.mycompany.com goes to this web application. It has /images
> > folder, /WEB-INF/classes, etc. Then, I have another web-app
> that starts from
> > the /admin path. So, in the admin web-app, if images use the <img
> > src="/images/path/image.gif"> format, is it infact looking for
> that image
> > from the ROOT web-app because of the / at the start?
> >
> > I guess the question is, when you might possibly be deploying any given
> > web-app into a container with other web-apps, is there a
> specific way to get
> > to paths via the web-app the path is being used in, and NOT access some
> > other web-apps?
> >
> > Worse case...you have web-app A deployed as root (/), then
> web-app B which
> > is at /B. They both have folders called /images in them. If
> web-app B uses
> > the "/images/" it is infact accessing the web-app A images
> folder... is this
> > right? So I would want all links/images/actions to be relative to the
> > web-app its deployed on. Can someone explain how to guarantee that?
>
> To allow the application to be deployed using any context path, you must
> either use relative paths for things like images and HTML links (e.g.
> "../images/image.gif") or add the context path to the elements
> dynamically:
>
> <img src="<%= request.getContextPath() %>/images/image.gif">
>
> The reason is that the HTML elements are sent as-is to the browser (it's
> "template text" using JSP terminology) and it's the browser that
> interprets
> the references. The browser interprets an absolute path like
> /images/image.gif
> as an absolute path for the server that sent the page, so it will try to
> get exactly /images/image.gif from the same server, i.e. without adding
> the context path.
>
> I have a whole section describing all the intricate details about how URI
> references in HTML and JSP elements are interpreted in my JSP book in case
> you need more info:
>
> <http://TheJSPBook.com/>
>
> Hans
> --
> Hans Bergsten [EMAIL PROTECTED]
> Gefion Software http://www.gefionsoftware.com
> Author of JavaServer Pages (O'Reilly), http://TheJSPBook.com
>
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>
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Some relevant FAQs on JSP/Servlets can be found at:
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