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Showing posts from May, 2014

Externalising Spring Configuration

Enterprise applications typically contain a number of  properties and  runtime resources that must be configured before the application is deployed. Property and resource values can either be baked into the artefact at build time using something like Maven Profiles or derived at runtime using Spring Profiles. My preferred approach is to externalise all configuration so that the artefact taken from the build server is environment agnostic and can be deployed onto any environment . For example, we could take a WAR file from our build server and  deploy it to our development, UAT or production environments without changing any configuration in the WAR file itself.

Spring Property Configuration Spring applications use the PropertyPlaceholderConfigurer to load application properties. Property files are typically loaded from the class path but the example below uses a slightly different approach, loading the properties file from a directory outside of the application itself. This allows the…