private static final String[] CLASSPATH_RESOURCE_LOCATIONS = { 
			"classpath:/META-INF/resources/", "classpath:/resources/", 
			"classpath:/static/", "classpath:/public/" }; 
	 
	@Override 
	public void addResourceHandlers(ResourceHandlerRegistry registry) { 
		if (!registry.hasMappingForPattern("/webjars/**")) { 
			registry.addResourceHandler("/webjars/**").addResourceLocations( 
					"classpath:/META-INF/resources/webjars/"); 
		} 
		if (!registry.hasMappingForPattern("/**")) { 
			registry.addResourceHandler("/**").addResourceLocations( 
					CLASSPATH_RESOURCE_LOCATIONS); 
		} 
	}