ServletContextResourceFilePathResolver Class — spring-boot Architecture

Source Code

core/spring-boot/src/main/java/org/springframework/boot/web/context/servlet/ServletContextResourceFilePathResolver.java lines 32–49

class ServletContextResourceFilePathResolver implements ApplicationResourceLoader.FilePathResolver {

	private static final String RESOURCE_CLASS_NAME = "org.springframework.web.context.support.ServletContextResource";

	private final @Nullable Class<?> resourceClass;

	ServletContextResourceFilePathResolver() {
		ClassLoader classLoader = getClass().getClassLoader();
		this.resourceClass = ClassUtils.isPresent(RESOURCE_CLASS_NAME, classLoader)
				? ClassUtils.resolveClassName(RESOURCE_CLASS_NAME, classLoader) : null;
	}

	@Override
	public @Nullable String resolveFilePath(String location, Resource resource) {
		return (this.resourceClass != null && this.resourceClass.isInstance(resource)) ? location : null;
	}

}