JDK8/Java8源码在线阅读

/*
 * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package java.net;

import java.io.InputStream;
import java.util.Map;
import java.util.List;
import java.io.IOException;

/**
 * Represent channels for retrieving resources from the
 * ResponseCache. Instances of such a class provide an
 * InputStream that returns the entity body, and also a
 * getHeaders() method which returns the associated response headers.
 *
 * @author Yingxian Wang
 * @since 1.5
 */
public abstract class CacheResponse {

    /**
     * Returns the response headers as a Map.
     *
     * @return An immutable Map from response header field names to
     *         lists of field values. The status line has null as its
     *         field name.
     * @throws IOException if an I/O error occurs
     *            while getting the response headers
     */
    public abstract Map<String, List<String>> getHeaders() throws IOException;

    /**
     * Returns the response body as an InputStream.
     *

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