Spring Profile specific properties files, similar to Spring Boot (or Grails) properties. This registers application-*.properties for all Active (or Default) spring profiles.

ProfilePropertiesInitializer.java

/**
 * Register this with the DispatcherServlet in a ServletInitializer class like:
 *     dispatcherServlet.setContextInitializers(new PropertiesInitializer());
 */
public class PropertiesInitializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
    private static final Logger log = LoggerFactory.getLogger(PropertiesInitializer.class);

    /**
     * Runs as appInitializer so properties are wired before spring beans
     */
    @Override
    public void initialize(ConfigurableApplicationContext applicationContext) {
        ConfigurableEnvironment env = applicationContext.getEnvironment();

        String[] activeProfiles = getActiveProfiles(env);

        for (String profileName : activeProfiles) {
            log.info("Loading properties for Spring Active Profile: {}", profileName);
            try {
                ResourcePropertySource propertySource = new ResourcePropertySource(profileName + "EnvProperties", "classpath:application-" + profileName + ".properties");

                env.getPropertySources().addLast(propertySource);
            } catch (IOException e) {
                log.error("ERROR during environment properties setup - TRYING TO LOAD: " + profileName, e);

                //Okay to silently fail here, as we might have profiles that do not have properties files (like dev1, dev2, etc)
            }
        }
    }

    /**
     * Returns either the ActiveProfiles, or if empty, then the DefaultProfiles from Spring
     */
    protected String[] getActiveProfiles(ConfigurableEnvironment env) {
        String[] activeProfiles = env.getActiveProfiles();
        if (activeProfiles.length > 0) {
            log.debug("Using registered Spring Active Profiles: {}", StringUtils.join(activeProfiles, ", "));
            return activeProfiles;
        }
        
        String[] defaultProfiles = env.getDefaultProfiles();
        log.debug("No Active Profiles found, using Spring Default Profiles: {}", StringUtils.join(defaultProfiles, ", "));
        return defaultProfiles;
    }

}