Read properties file outside war in Spring application

bean.xml

<!-- Add this bean in spring-beans.xml -->
	<bean id="propConfig" class="com.godiva.util.GodivaPropertiesConfugurer" />

PropertiesConfugurer.java

@Configuration
public class PropertiesConfugurer implements WebApplicationInitializer, ApplicationContextAware, 
													ApplicationContextInitializer<ConfigurableApplicationContext> {
	
	private static final Logger logger = Logger.getLogger(XmlFormatter.class);
	
	private static ApplicationContext context;
	private static String relativePath;
		
	@Override
	public void onStartup(ServletContext servletContext)
			throws ServletException {
		
		File realPath = new File(servletContext.getRealPath("."));
		relativePath = realPath.getParentFile().getParentFile().getParentFile().getPath();					
	}
	
	@Bean
	public static PropertyPlaceholderConfigurer ppc() throws IOException {
		
		System.out.println("############################################");
		
		System.out.println(relativePath);
		logger.info("************ Application relative path ***********");
		logger.info(relativePath);
		
		System.out.println("############################################");

		PropertyPlaceholderConfigurer ppc = new PropertyPlaceholderConfigurer();
		Resource[] resources = new FileSystemResource[ ] {new FileSystemResource(relativePath + "/config.properties")};
		ppc.setLocations( resources );
		ppc.setIgnoreUnresolvablePlaceholders( true );
		
		return ppc;
	}

	@Override
	public void setApplicationContext(ApplicationContext ctx)
			throws BeansException {		
		this.context = ctx;
	}

	@Override
	public void initialize(ConfigurableApplicationContext applicationContext) {
		
		/*System.out.println("############# initialize #####################");
		
		System.out.println(relativePath);
		
		System.out.println("############################################");
		
		ConfigurableEnvironment environment = applicationContext.getEnvironment();
        try {
            environment.getPropertySources().addFirst(new ResourcePropertySource(relativePath + "/config.properties"));
        } catch (IOException e) {
        }*/
	}
}

Improved code:

@configuration
public class GdiPropertiesConfigurer implements WebApplicationInitializer {

private static final Logger logger = Logger.getLogger(XmlFormatter.class);

private static String rootDirectory;
	
/*** This method is called at the time of applications startup ***/	
@Override
public void onStartup(ServletContext servletContext)
		throws ServletException {
	
	Path path = Paths.get(servletContext.getRealPath("."));
	path.getRoot();
	
	/*** Setting root directory where Jetty resides ***/
	rootDirectory = (path.getRoot() != null) ? path.getRoot().toString() : StringUtils.EMPTY;					
}

/*** Initializing PropertyPlaceholderConfigurer bean to read config.properties from 
     application relative path ROOT/gdi_som/gdi_som_config/config.properties ***/
@Bean
public static PropertyPlaceholderConfigurer ppc() throws IOException {
	
	logger.info("************ Application relative path ***********");
	logger.info(rootDirectory);

	PropertyPlaceholderConfigurer ppc = new PropertyPlaceholderConfigurer();
	Resource[] resources;
	if(StringUtils.isNotEmpty(rootDirectory))
	{
		resources = new FileSystemResource[ ] {new FileSystemResource(rootDirectory + "/gdi_som/gdi_som_config/config.properties")};
	}
	else
	{
		resources = new FileSystemResource[ ] {new FileSystemResource("/gdi_som/gdi_som_config/config.properties")};
	}
	ppc.setLocations( resources );
	ppc.setIgnoreUnresolvablePlaceholders( true );
	
	return ppc;
}

}