org.bibsonomy.rest.util.MultiPartRequestParser.java Source code

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Here is the source code for org.bibsonomy.rest.util.MultiPartRequestParser.java

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/**
 *
 *  BibSonomy-Rest-Server - The REST-server.
 *
 *  Copyright (C) 2006 - 2011 Knowledge & Data Engineering Group,
 *                            University of Kassel, Germany
 *                            http://www.kde.cs.uni-kassel.de/
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program 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 for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package org.bibsonomy.rest.util;

import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

/**
 * Parses the request items
 * 
 * @author Christian Kramer
 * @version $Id: MultiPartRequestParser.java,v 1.2 2010-10-07 12:45:07 nosebrain Exp $
 */
public class MultiPartRequestParser {
    // initialize the max size ~50MB
    private static final int MAX_REQUEST_SIZE = 1024 * 1024 * 51;

    private List<FileItem> items;

    /**
     * @param request
     * @throws FileUploadException
     */
    public MultiPartRequestParser(final HttpServletRequest request) throws FileUploadException {
        // the factory to hold the file
        final FileItemFactory factory = new DiskFileItemFactory();
        final ServletFileUpload upload = new ServletFileUpload(factory);

        /*
         * need to check if the request content-type isn't null because the
         * apache.commons.fileupload doesn't to that so the junit tests will
         * fail with a nullpointer exception
         */
        boolean isMultipart = false;
        if (request.getContentType() != null) {
            isMultipart = ServletFileUpload.isMultipartContent(request);
        }

        // online parse the items if the content-type is multipart
        if (isMultipart) {
            upload.setSizeMax(MAX_REQUEST_SIZE);

            // parse the items
            @SuppressWarnings("unchecked") // ServletFileUpload.parseRequest specified to return a list of FileItems
            final List<FileItem> parseRequest = upload.parseRequest(request);
            this.items = parseRequest;
        }
    }

    /**
     * @return a list fo FileItem's
     */
    public List<FileItem> getList() {
        return this.items;
    }
}