001/* 002 * Copyright 2002-2016 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.web.reactive.resource; 018 019import java.util.List; 020 021import org.apache.commons.logging.Log; 022import org.apache.commons.logging.LogFactory; 023import reactor.core.publisher.Mono; 024 025import org.springframework.core.io.Resource; 026import org.springframework.lang.Nullable; 027import org.springframework.web.server.ServerWebExchange; 028 029/** 030 * Base {@link ResourceResolver} providing consistent logging. 031 * 032 * @author Rossen Stoyanchev 033 * @since 5.0 034 */ 035public abstract class AbstractResourceResolver implements ResourceResolver { 036 037 protected final Log logger = LogFactory.getLog(getClass()); 038 039 040 @Override 041 public Mono<Resource> resolveResource(@Nullable ServerWebExchange exchange, String requestPath, 042 List<? extends Resource> locations, ResourceResolverChain chain) { 043 044 return resolveResourceInternal(exchange, requestPath, locations, chain); 045 } 046 047 @Override 048 public Mono<String> resolveUrlPath(String resourceUrlPath, List<? extends Resource> locations, 049 ResourceResolverChain chain) { 050 051 return resolveUrlPathInternal(resourceUrlPath, locations, chain); 052 } 053 054 055 protected abstract Mono<Resource> resolveResourceInternal(@Nullable ServerWebExchange exchange, 056 String requestPath, List<? extends Resource> locations, ResourceResolverChain chain); 057 058 protected abstract Mono<String> resolveUrlPathInternal(String resourceUrlPath, 059 List<? extends Resource> locations, ResourceResolverChain chain); 060 061}