blog-spring-servlet-2

public class WebAppInitializer implements WebApplicationInitializer {

    private static final Logger logger = LoggerFactory.getLogger(WebAppInitializer.class);
    public static final String PROFILE_CONFIG_FILE = "/config/profile.config";

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        try {
            // Access profile config file for active profile
            Properties properties = new Properties();
            properties.load(this.getClass().getResourceAsStream(PROFILE_CONFIG_FILE));
            // Activating profile obtained from profile config file
            String profile = properties.getProperty("spring.profiles.active");
            servletContext.setInitParameter("spring.profiles.active", profile);
            // Creating spring application context with AppConfig class
            AnnotationConfigWebApplicationContext applicationContext = new AnnotationConfigWebApplicationContext();
            applicationContext.register(AppConfig.class);
            servletContext.addListener(new ContextLoaderListener(applicationContext));

        } catch (IOException e) {
            logger.error("Profile activator config file not found: {}", PROFILE_CONFIG_FILE);
        }
    }
}