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/*
 * Copyright 2002-2019 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.accept;

import java.util.Collections;
import java.util.List;

import org.springframework.http.MediaType;
import org.springframework.util.Assert;
import org.springframework.web.context.request.NativeWebRequest;

/**
 * A {@code ContentNegotiationStrategy} that returns a fixed content type.
 *
 * @author Rossen Stoyanchev
 * @since 3.2
 */
public class FixedContentNegotiationStrategy implements ContentNegotiationStrategy {

	private final List contentTypes;


	/**
	 * Constructor with a single default {@code MediaType}.
	 */
	public FixedContentNegotiationStrategy(MediaType contentType) {
		this(Collections.singletonList(contentType));
	}

	/**
	 * Constructor with an ordered List of default {@code MediaType}'s to return
	 * for use in applications that support a variety of content types.
	 * 

Consider appending {@link MediaType#ALL} at the end if destinations * are present which do not support any of the other default media types. * @since 5.0 */ public FixedContentNegotiationStrategy(List contentTypes) { Assert.notNull(contentTypes, "'contentTypes' must not be null"); this.contentTypes = Collections.unmodifiableList(contentTypes); } /** * Return the configured list of media types. */ public List getContentTypes() { return this.contentTypes; } @Override public List resolveMediaTypes(NativeWebRequest request) { return this.contentTypes; } }





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