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

Introduction

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

Prototype

Mono<String> resolveUrlPath(String resourcePath, List<? extends Resource> locations);

Source Link

Document

Resolve the externally facing public URL path for clients to use to access the resource that is located at the given internal resource path.

Usage

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

private Mono<String> resolveResourceUrl(PathContainer lookupPath) {
    return this.handlerMap
            .entrySet().stream().filter(entry -> entry.getKey().matches(lookupPath)).sorted((entry1,
                    entry2) -> PathPattern.SPECIFICITY_COMPARATOR.compare(entry1.getKey(), entry2.getKey()))
            .findFirst().map(entry -> {
                PathContainer path = entry.getKey().extractPathWithinPattern(lookupPath);
                int endIndex = lookupPath.elements().size() - path.elements().size();
                PathContainer mapping = lookupPath.subPath(0, endIndex);
                if (logger.isTraceEnabled()) {
                    logger.trace(/*from w  w w.ja  va  2 s . com*/
                            "Invoking ResourceResolverChain for URL pattern " + "\"" + entry.getKey() + "\"");
                }
                ResourceWebHandler handler = entry.getValue();
                List<ResourceResolver> resolvers = handler.getResourceResolvers();
                ResourceResolverChain chain = new DefaultResourceResolverChain(resolvers);
                return chain.resolveUrlPath(path.value(), handler.getLocations()).map(resolvedPath -> {
                    if (logger.isTraceEnabled()) {
                        logger.trace("Resolved public resource URL path \"" + resolvedPath + "\"");
                    }
                    return mapping.value() + resolvedPath;
                });

            }).orElse(Mono.empty());
}

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