Re: accessing an image outside my webapp

[Michael McGrady]

This is not quite right.  The only thing you have to do is to give the 
server whatever it needs to retrieve the data.  This can be a relative or 
absolute url or a protocol you develop on your own.  The idea is that you 
have to tell the server what to do.  That will depend on your set up.  My 
site uses src='RESOURCE.MICHAELMcGRADY?file_type=[some mime or defined 
type, e.g. gif, jpeg, css]&file_name=[name of the file, not fully 
qualified]' to return resources, including Flash in the <object> tag.

The general solution is to create or obey some protocol which tells the 
server to return the appropriate output stream to the response object.  My 
basic class, without the utility/helper classes is:

public final class ActionResource
    extends Action {
  public ActionForward execute(ActionMapping mapping,
                               ActionForm form,
                               HttpServletRequest request,
                               HttpServletResponse response)
      throws IOException,
             ServletException {
    new Facade().handle(request, response);
    return null;
  }
}
The Facade class is as follows:
public class Facade
    implements FacadeIF {
  public Facade() {
    super();
  }
  public void handle(HttpServletRequest request,
                     HttpServletResponse response) {
    new WriteResponse().write(new InitResponse().init(request, response), 
response);
    return;
  }
}
The key is that you use the response object to get the output stream and 
return a null after writing the object in the response.  This is set up on 
my system so that the GUI people just have to indicate the type and the 
name of their resource.  They need know nothing else and all the "crap" 
about how to locate and to return images, which is always arising, is 
completely avoided.  Cool, eh?

At 07:34 AM 1/15/2004, you wrote:
that makes a bit more sense now, so my original suggestion wasn't just the 
crack talking then :)

On 15 Jan 2004, at 15:25, Robert Nocera wrote:

I don't think Tomcat does, but your local browser will.  You are sending
your browser a link that tells it to load a file on your file system.
It
will work fine if you are only running locally, but it won't work if you try
to access that link from a browser on another machine unless that machine
also has the same file locally.
-Rob

-----Original Message-----
From: Mark Lowe [mailto:[EMAIL PROTECTED]
Sent: Thursday, January 15, 2004 10:14 AM
To: Struts Users Mailing List
Subject: Re: accessing an image outside my webapp
by jingo. it only works!!

just src rather than href

<html:img src="file:///test.jpg" />

I thought tomcat wouldn't have access to anything outside the webapp.

On 15 Jan 2004, at 15:03, Richard Hightower wrote:

seems like an odd request... but here goes...

<html:img href="file://c:/photo directory/foo.gif"/>

html:img supports three attributes for specifyin the location of an
image
forward (referes to a global forward), page (relative to the current
web
context), and href (any valid URL).
Rick Hightower
Developer
Struts/J2EE training -- http://www.arc-mind.com/strutsCourse.htm

Struts/J2EE consulting --
http://www.arc-mind.com/consulting.htm#StrutsMentoring
-----Original Message-----
From: Alain Van Vyve [mailto:[EMAIL PROTECTED]
Sent: Thursday, January 15, 2004 7:35 AM
To: [EMAIL PROTECTED]
Subject: accessing an image outside my webapp


I have a JSP where I would like to show an image located outside my
webapp
(e.g. in a c:\photo directory)  ...
How to do that with the <html:img> Struts tag ??

Thanks

Alain

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