Question

classpath priority

Asked by: ank9

I am using Tomcat 6.
I have a .properties file in a jar file which is placed in <tomcat_home>/<app_name>/WEB-INF/lib.

This same properties file I have placed in <tomcat_home>/<app_name>/config.

In tomcat/bin, setclasspath.bat, I have set the classpath to <tomcat_home>/<app_name>/config. But when I run the application, still the properties file in lib is getting used. It seems that properties file in lib has a higher priority to properties file in "config" (which is also set in classpath).

Is there a way that I can set the priority to "config" to be higher than "lib"

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Asked On
2009-10-05 at 21:18:08ID24787743
Topics

Java Programming Language

,

J2EE

,

Apache Tomcat Application Server

Participating Experts
2
Points
500
Comments
8

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Answers

 

by: objectsPosted on 2009-10-05 at 21:20:42ID: 25501865

I would suggest against messing around with tomcats classpath and instead put your config file in <app_name>/WEB-INF/classes

 

by: ank9Posted on 2009-10-05 at 21:28:39ID: 25501889

thanks for replying.
Is there a way that this can be done without putting it in classes?

 

by: objectsPosted on 2009-10-05 at 21:30:28ID: 25501902

> Is there a way that this can be done without putting it in classes?

don't use the classloader to load it.

though whats the problem with putting it in classes?

what exactly is it you are trying to achieve?

 

by: ank9Posted on 2009-10-05 at 21:36:46ID: 25501929

>>though whats the problem with putting it in classes?

We create the war once and then it is moved to various environments like SIT, UAT and Production. The war itself is never expanded and no changes are ever made to it. So exactly the same version of WAR is there in all the environments with no changes whatsoever.
Now there may be some properties which we may need to configure based on the environment. So we keep these properties in a folder called config which is placed outside the WAR. We set the classpath to this folder so that these properties are accessible to the application.

 

by: objectsPosted on 2009-10-05 at 21:41:15ID: 25501945

don't use the classloader and load the files directly (using path)

 

by: ank9Posted on 2009-10-05 at 21:43:07ID: 25501948

Thanks for replying.

Does that mean, in the code, instead of doing

ResourceBundle rb = ResourceBundle.getBundle("dmsProp");

I should be doing something like

ResourceBundle rb = ResourceBundle.getBundle("c:\config\dmsProp");

 

by: objectsPosted on 2009-10-05 at 21:46:02ID: 25501958

is it actually a resource bindle, or just a properties file?

if the latter then use Properties class to load it

 

by: CEHJPosted on 2009-10-06 at 00:32:36ID: 25502545

If you're using the latest version of Java, ResourceBundle has been expanded to allow much greater control of bundle loading. See Javadoc

20120131-EE-VQP-002

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