@Override
public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(thumbnailViewRequestInterceptor).addPathPatterns("/content/thumbnails/**");
}

@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {

    final String pathToHost = "file:///D:/content/;
    final String mappedPath = "/content/thumbnails/**";
    registry.addResourceHandler(mappedPath).addResourceLocations(pathToHost).setCachePeriod(0);
}