Example usage for org.springframework.web.reactive.resource ResourceResolverChain resolveResource

Introduction

In this page you can find the example usage for org.springframework.web.reactive.resource ResourceResolverChain resolveResource.

Prototype

Mono<Resource> resolveResource(@Nullable ServerWebExchange exchange, String requestPath,
        List<? extends Resource> locations);

Source Link

Document

Resolve the supplied request and request path to a Resource that exists under one of the given resource locations.

Usage

From source file:org.springframework.web.reactive.resource.ResourceWebHandler.java

protected Mono<Resource> getResource(ServerWebExchange exchange) {

    String name = HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE;
    PathContainer pathWithinHandler = exchange.getRequiredAttribute(name);
    String path = processPath(pathWithinHandler.value());
    if (!StringUtils.hasText(path) || isInvalidPath(path)) {
        if (logger.isTraceEnabled()) {
            logger.trace("Ignoring invalid resource path [" + path + "]");
        }/*from w  w w .j  a  va 2  s .  c  o m*/
        return Mono.empty();
    }

    if (path.contains("%")) {
        try {
            // Use URLDecoder (vs UriUtils) to preserve potentially decoded UTF-8 chars
            if (isInvalidPath(URLDecoder.decode(path, "UTF-8"))) {
                if (logger.isTraceEnabled()) {
                    logger.trace("Ignoring invalid resource path with escape sequences [" + path + "].");
                }
                return Mono.empty();
            }
        } catch (IllegalArgumentException ex) {
            // ignore
        } catch (UnsupportedEncodingException ex) {
            return Mono.error(Exceptions.propagate(ex));
        }
    }

    ResourceResolverChain resolveChain = createResolverChain();
    return resolveChain.resolveResource(exchange, path, getLocations()).flatMap(resource -> {
        ResourceTransformerChain transformerChain = createTransformerChain(resolveChain);
        return transformerChain.transform(exchange, resource);
    });
}

---