/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements.  See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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 * *      http://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.apache.commons.fileupload;import java.io.InputStream;import java.io.IOException;/** * <p>Abstracts access to the request information needed for file uploads. This * interfsace should be implemented for each type of request that may be * handled by FileUpload, such as servlets and portlets.</p> * * @author <a href="mailto:martinc@apache.org">Martin Cooper</a> * * @since FileUpload 1.1 * * @version $Id: RequestContext.java 479262 2006-11-26 03:09:24Z niallp $ */public interface RequestContext {    /**     * Retrieve the character encoding for the request.     *     * @return The character encoding for the request.     */    String getCharacterEncoding();    /**     * Retrieve the content type of the request.     *     * @return The content type of the request.     */    String getContentType();    /**     * Retrieve the content length of the request.     *     * @return The content length of the request.     */    int getContentLength();    /**     * Retrieve the input stream for the request.     *     * @return The input stream for the request.     *     * @throws IOException if a problem occurs.     */    InputStream getInputStream() throws IOException;}