au.edu.unimelb.news.servlet.ImportServlet.java Source code

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Here is the source code for au.edu.unimelb.news.servlet.ImportServlet.java

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/*
 * Copyright (c)2007 The University of Melbourne, Inc. All Rights Reserved.
 *
 * This software is the confidential and proprietary information of The
 * University of Melbourne. ("Confidential Information"). You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms and conditions of contractual and/or employment
 * policy of the university.
 *
 * THE UNIVERSITY OF MELBOURNE MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE
 * SUITABILITY OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT
 * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE UNIVERSITY OF MELBOURNE SHALL
 * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING,
 * MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 */
package au.edu.unimelb.news.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.Random;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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

import au.edu.unimelb.news.Configuration;
import au.edu.unimelb.news.model.ArticleImport;
import au.edu.unimelb.news.model.ArticleImportResponder;
import au.edu.unimelb.security.UserHelper;
import au.edu.unimelb.security.model.User;
import au.edu.unimelb.template.LayoutHelper;

/**
 * Handles requests to create new agenda items for a speciffic meeting.
 */
@SuppressWarnings("serial")
public class ImportServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {

    private static final Random random = new Random();

    public ImportServlet() {
        super();
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doPost(request, response);
    }

    /**
     * Reads all user input related to creating a new agenda item and creates the agenda item.
     */
    @SuppressWarnings("unchecked")
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        User user = UserHelper.getUser(request);
        response.setContentType("text/html");
        PrintWriter out = new PrintWriter(response.getOutputStream());
        LayoutHelper.headerTitled(out, "Import");
        LayoutHelper.menubar(out, user);

        out.println("<div id=\"breadcrumbs\">");
        out.println("<a href=\"http://www.unimelb.edu.au\">University home</a> &gt;");
        out.println("<a href=\"" + Configuration.appPrefix + "/\">University News</a> &gt;");
        out.println("Document Import");
        out.println("</div>");

        out.println("<div id=\"content\">");
        out.println("<h2>Importing</h2>");

        //out.flush();

        /*
         *  This chunk calls the Jakarta Commons Fileupload component to
         *  process the file upload information.
         */
        FileItemFactory factory = new DiskFileItemFactory();
        ServletFileUpload upload = new ServletFileUpload(factory);
        List<FileItem> items = null;
        try {
            items = upload.parseRequest(request);
        } catch (Exception e) {
            out.println("Fatal error: " + e.getMessage());
            out.println("</div>");
            LayoutHelper.footer(out);

            out.flush();
            out.close();
        }

        /*
         * Use the Jakarta Commons Fileupload component to read the
         * field variables.
         */
        try {
            out.println("<ul>");
            String filename = "";
            for (FileItem field : items) {
                if (!field.isFormField()) {
                    filename = field.getName();
                    if (filename.contains("/"))
                        filename = filename.substring(filename.lastIndexOf('/') + 1);
                    if (filename.contains("\\"))
                        filename = filename.substring(filename.lastIndexOf('\\') + 1);
                    int no = random.nextInt();
                    if (no < 1)
                        no = -no;
                    if (filename.length() > 0 && field.getSize() > 0
                            && field.getFieldName().equals("import_file")) {
                        ArticleImport helper = new ArticleImport(new ArticleImportResponder(user, out));
                        helper.process(field.getInputStream(), user);
                    }
                }
            }
            out.println("</ul>");
        } catch (Exception e) {
            out.println("Fatal error: " + e.getMessage());
            out.println("</div>");
            LayoutHelper.footer(out);

            out.flush();
            out.close();
        }

        out.println("File upload processing complete.");

        out.println("</div>");
        LayoutHelper.footer(out);

        out.flush();
        out.close();
    }

}