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.accept; 018 019import java.util.List; 020 021import org.springframework.http.MediaType; 022import org.springframework.web.HttpMediaTypeNotAcceptableException; 023import org.springframework.web.context.request.NativeWebRequest; 024 025/** 026 * A strategy for resolving the requested media types for a request. 027 * 028 * @author Rossen Stoyanchev 029 * @since 3.2 030 */ 031public interface ContentNegotiationStrategy { 032 033 /** 034 * Resolve the given request to a list of media types. The returned list is 035 * ordered by specificity first and by quality parameter second. 036 * @param webRequest the current request 037 * @return the requested media types or an empty list (never {@code null}) 038 * @throws HttpMediaTypeNotAcceptableException if the requested media 039 * types cannot be parsed 040 */ 041 List<MediaType> resolveMediaTypes(NativeWebRequest webRequest) 042 throws HttpMediaTypeNotAcceptableException; 043 044}