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You might have a set of properties that is used on the developer machine, which varies from developer to developer, another set for a staging environment, and yet another for the production environment.
In a Spring application you may also have beans that you want to load in a local environment but not in a production environment, and vice versa.
How do you handle this? Do you use separate files, ant/maven resource filtering or other approaches?
I just put the various properties in JNDI. This way each of the servers can be configured and I can have ONE war file. If the list of properties is large, then I’ll host the properties (or XML) files on another server. I’ll use JNDI to specify the URL of the file to use.
If you are creating different app files (war/ear) for each environment, then you aren’t deploying the same war/ear that you are testing.
In one of my apps, we use several REST services. I just put the root url in JNDI. Then in each environment, the server can be configured to communicate with the proper REST service for that environment.