I've used this method before to load configfiles and jar files from an
external directory with the main application packaged into a war, whilst
it is messy, it does work.
From within a struts plugin...
ClassLoader loader = servlet.getClass().getClassLoader();
try {
URL configPathUrl = new URL( "file:" + basePath + File.separator +
"config/" );
log.debug( "Adding Repository to search path '" + configPathUrl +
"'" );
Method addRespositoryMethod = loader.getClass().getMethod(
"addRepository" , new Class[]{ String.class } );
addRespositoryMethod.invoke( loader , new Object[] {
configPathUrl.toString() } );
// need to add each individual jar file to this search path
File directory = new File( configPathUrl.getFile() );
File[] jarFiles = directory.listFiles( new FileFilter() {
public boolean accept( File input ) {
return input.getName().endsWith( ".jar" );
}
});
for ( int i=0; i< jarFiles.length; i++ ) {
log.debug( "Adding Repository to search path '" + jarFiles[i] +
"'" );
Method addRespositoryMethodForJar =
loader.getClass().getMethod( "addRepository" , new Class[]{ String.class
} );
addRespositoryMethodForJar.invoke( loader , new Object[] {
jarFiles[i].toURL().toString() } );
}
//log.debug( "Loader - " + loader );
}
catch ( Exception exp ) {
log.error( "Unable to add repository path" , exp );
}
The reason for invoking the methods via reflection is that I didn't want
to make the tomcat libs a dependency for building the project.
Gareth
David Delbecq wrote:
It's rather not possible in general, The .war is supposed to be a
'complete' application, config included. If you load the ressources
using the classloader, you can still use 'tricks' that depend on
container specific behaviour, but that is not recommanded.
The best way if you want your user not to have to play thmeself with
.war content is to provide a ant script that will take a config/
directory and inject it in the .war, so the user easily regenerate the
war avec config change.
Pankaj Gupta wrote:
---------- Forwarded message ----------
From: Pankaj Gupta <[EMAIL PROTECTED]>
Date: Jun 28, 2006 11:03 AM
Subject: [OT] How to specify classpath for an application
To: user@struts.apache.org
Hi All,
I want to specify a config folder in my classpath which will not be
part of
my war file. Can you please suggest how can I do that? I want to place my
config files outside the war file for anyone to modify it.
regards,
Pankaj
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