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| Re: Where exactly does a jsp page get deployed when run via Eclipse? [message #1181481 is a reply to message #1179897] |
Mon, 11 November 2013 16:27   |
 Larry Isaacs
Messages: 1354
Registered: July 2009 |
Senior Member |
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On 11/10/2013 11:30 AM, nav k wrote:
> I was told to ask in this forum, so... :
> http://www.eclipse.org/forums/index.php/t/590241/
>
> I created a new default web application project which had an index.jsp.
> I had already pointed Eclipse to the place I had extracted Tomcat
> (C:\apache-tomcat-7.0.42).
>
> I ran the program, the browser opened and the index.jsp file was displayed.
>
> What I don't understand is, that the index.jsp file was not
> automatically copied to the Tomcat folder and it still worked. I thought
> that for a file to work, it had to be copied to the
> C:\apache-tomcat-7.0.42\webapps\ROOT\WEB-INF folder.
>
> How does Eclipse manage to execute the index.jsp file without copying it
> to the Tomcat folder?
> When I run the program in Eclipse, it shows that it is starting the
> Tomcat server. Is it starting the same server in C:\apache-tomcat-7.0.42
> or is it creating a separate 'virtual' kind of an instance of the server
> and running it in the Eclipse workspace?
>
> My catalina base folder points to C:\apache-tomcat-7.0.42 but when I
> created my servlet project, the NameHandler.class file got created in
> F:\Programming\Java\HelloWeb\build\web\WEB-INF\classes\org\mypackage\hello.
> I searched the tomcat directory, and the .class file wasn't there. Nor
> was any trace of my HelloWeb project. So my question persists, as to how
> the program works even if the .class file does not actually get deployed
> in the tomcat directory?
See the Tomcat FAQ [1]. It will explain how this is working. The quick
answer is that by default a separate instance of Tomcat is created under
the ".metadata" folder of your workspace. This avoids complications
that can occur trying to use your installed Tomcat directly.
Cheers,
Larry
[1] http://wiki.eclipse.org/WTP_Tomcat_FAQ
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