org.springframework.web.servlet.resource.AbstractResourceResolver Maven / Gradle / Ivy
/*
* Copyright 2002-2017 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
*
* https://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 org.springframework.web.servlet.resource;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.core.io.Resource;
import org.springframework.lang.Nullable;
/**
* Base class for {@link org.springframework.web.servlet.resource.ResourceResolver}
* implementations. Provides consistent logging.
*
* @author Rossen Stoyanchev
* @since 4.1
*/
public abstract class AbstractResourceResolver implements ResourceResolver {
protected final Log logger = LogFactory.getLog(getClass());
@Override
@Nullable
public Resource resolveResource(@Nullable HttpServletRequest request, String requestPath,
List locations, ResourceResolverChain chain) {
return resolveResourceInternal(request, requestPath, locations, chain);
}
@Override
@Nullable
public String resolveUrlPath(String resourceUrlPath, List locations,
ResourceResolverChain chain) {
return resolveUrlPathInternal(resourceUrlPath, locations, chain);
}
@Nullable
protected abstract Resource resolveResourceInternal(@Nullable HttpServletRequest request,
String requestPath, List locations, ResourceResolverChain chain);
@Nullable
protected abstract String resolveUrlPathInternal(String resourceUrlPath,
List locations, ResourceResolverChain chain);
}