de.codecentric.boot.admin.web.servlet.resource.ResourcePatternResolvingResourceResolver.java Source code

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Here is the source code for de.codecentric.boot.admin.web.servlet.resource.ResourcePatternResolvingResourceResolver.java

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/*
 * Copyright 2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package de.codecentric.boot.admin.web.servlet.resource;

import java.io.IOException;
import java.util.Arrays;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.springframework.core.io.Resource;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.web.client.ResourceAccessException;
import org.springframework.web.servlet.resource.AbstractResourceResolver;
import org.springframework.web.servlet.resource.ResourceResolver;
import org.springframework.web.servlet.resource.ResourceResolverChain;

/**
 * {@link ResourceResolver} that resolves all resources for the given pattern and delegates them to
 * the chain.
 *
 * @author Johannes Edmeier
 */
public class ResourcePatternResolvingResourceResolver extends AbstractResourceResolver {
    private final ResourcePatternResolver resourcePatternResolver;
    private final String pattern;

    public ResourcePatternResolvingResourceResolver(ResourcePatternResolver resourcePatternResolver,
            String pattern) {
        this.resourcePatternResolver = resourcePatternResolver;
        this.pattern = pattern;
    }

    @Override
    protected Resource resolveResourceInternal(HttpServletRequest request, String requestPath,
            List<? extends Resource> locations, ResourceResolverChain chain) {
        try {
            Resource[] resources = resourcePatternResolver.getResources(pattern);
            return chain.resolveResource(request, requestPath, Arrays.asList(resources));
        } catch (IOException ex) {
            throw new ResourceAccessException("Couldn't resolve resources for \"" + pattern + "\"", ex);
        }
    }

    @Override
    protected String resolveUrlPathInternal(String resourceUrlPath, List<? extends Resource> locations,
            ResourceResolverChain chain) {
        return chain.resolveUrlPath(resourceUrlPath, locations);
    }

}