Java tutorial
/** * The contents of this file are subject to the license and copyright * detailed in the LICENSE and NOTICE files at the root of the source * tree and available online at * * http://www.dspace.org/license/ */ package org.dspace.app.webui.servlet; import java.io.IOException; import java.net.InetAddress; import java.sql.SQLException; import java.util.MissingResourceException; import javax.mail.MessagingException; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.lang.StringUtils; import org.apache.log4j.Logger; import org.dspace.app.webui.util.JSPManager; import org.dspace.authorize.AuthorizeException; import org.dspace.core.ConfigurationManager; import org.dspace.core.Context; import org.dspace.core.Email; import org.dspace.core.I18nUtil; import org.dspace.core.LogManager; import org.dspace.eperson.EPerson; import org.dspace.handle.HandleManager; import org.dspace.content.Item; import org.dspace.content.Collection; import org.dspace.content.DCValue; /** * Servlet for handling user email recommendations * * @author Arnaldo Dantas * @version $Revision$ */ public class SuggestServlet extends DSpaceServlet { /** log4j category */ private static Logger log = Logger.getLogger(SuggestServlet.class); protected void doDSGet(Context context, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, SQLException, AuthorizeException { // Obtain information from request // The page where the user came from String fromPage = request.getHeader("Referer"); // Prevent spammers and splogbots from poisoning the feedback page String host = ConfigurationManager.getProperty("dspace.hostname"); String basicHost = ""; if (host.equals("localhost") || host.equals("127.0.0.1") || host.equals(InetAddress.getLocalHost().getHostAddress())) { basicHost = host; } else { // cut off all but the hostname, to cover cases where more than one URL // arrives at the installation; e.g. presence or absence of "www" int lastDot = host.lastIndexOf('.'); basicHost = host.substring(host.substring(0, lastDot).lastIndexOf(".")); } if (fromPage == null || fromPage.indexOf(basicHost) == -1) { throw new AuthorizeException(); } // Obtain information from request String handle = request.getParameter("handle"); // Lookup Item title & collection String title = null; String collName = null; if (handle != null && !handle.equals("")) { Item item = (Item) HandleManager.resolveToObject(context, handle); if (item != null) { DCValue[] titleDC = item.getDC("title", null, Item.ANY); if (titleDC != null && titleDC.length > 0) { title = titleDC[0].value; } Collection[] colls = item.getCollections(); collName = colls[0].getMetadata("name"); } } else { String path = request.getPathInfo(); log.info(LogManager.getHeader(context, "invalid_id", "path=" + path)); JSPManager.showInvalidIDError(request, response, path, -1); return; } if (title == null) { title = ""; } if (collName == null) { collName = ""; } request.setAttribute("suggest.title", title); // User email from context EPerson currentUser = context.getCurrentUser(); String authEmail = null; String userName = null; if (currentUser != null) { authEmail = currentUser.getEmail(); userName = currentUser.getFullName(); } if (request.getParameter("submit") != null) { String recipAddr = request.getParameter("recip_email"); // the only required field is recipient email address if (recipAddr == null || recipAddr.equals("")) { log.info(LogManager.getHeader(context, "show_suggest_form", "problem=true")); request.setAttribute("suggest.problem", Boolean.TRUE); JSPManager.showJSP(request, response, "/suggest/suggest.jsp"); return; } String recipName = request.getParameter("recip_name"); if (recipName == null || "".equals(recipName)) { try { recipName = I18nUtil.getMessage("org.dspace.app.webui.servlet.SuggestServlet.recipient", context); } catch (MissingResourceException e) { log.warn(LogManager.getHeader(context, "show_suggest_form", "Missing Resource: org.dspace.app.webui.servlet.SuggestServlet.sender")); recipName = "colleague"; } } String senderName = request.getParameter("sender_name"); if (senderName == null || "".equals(senderName)) { // use userName if available if (userName != null) { senderName = userName; } else { try { senderName = I18nUtil.getMessage("org.dspace.app.webui.servlet.SuggestServlet.sender", context); } catch (MissingResourceException e) { log.warn(LogManager.getHeader(context, "show_suggest_form", "Missing Resource: org.dspace.app.webui.servlet.SuggestServlet.sender")); senderName = "A DSpace User"; } } } String senderAddr = request.getParameter("sender_email"); if (StringUtils.isEmpty(senderAddr) && authEmail != null) { // use authEmail if available senderAddr = authEmail; } String itemUri = HandleManager.getCanonicalForm(handle); String itemUrl = HandleManager.resolveToURL(context, handle); String message = request.getParameter("message"); String siteName = ConfigurationManager.getProperty("dspace.name"); // All data is there, send the email try { Email email = ConfigurationManager .getEmail(I18nUtil.getEmailFilename(context.getCurrentLocale(), "suggest")); email.addRecipient(recipAddr); // recipient address email.addArgument(recipName); // 1st arg - recipient name email.addArgument(senderName); // 2nd arg - sender name email.addArgument(siteName); // 3rd arg - repository name email.addArgument(title); // 4th arg - item title email.addArgument(itemUri); // 5th arg - item handle URI email.addArgument(itemUrl); // 6th arg - item local URL email.addArgument(collName); // 7th arg - collection name email.addArgument(message); // 8th arg - user comments // Set sender's address as 'reply-to' address if supplied if (senderAddr != null && !"".equals(senderAddr)) { email.setReplyTo(senderAddr); } // Only actually send the email if feature is enabled if (ConfigurationManager.getBooleanProperty("webui.suggest.enable", false)) { email.send(); } else { throw new MessagingException("Suggest item email not sent - webui.suggest.enable = false"); } log.info(LogManager.getHeader(context, "sent_suggest", "from=" + senderAddr)); JSPManager.showJSP(request, response, "/suggest/suggest_ok.jsp"); } catch (MessagingException me) { log.warn(LogManager.getHeader(context, "error_mailing_suggest", ""), me); JSPManager.showInternalError(request, response); } } else { // Display suggest form log.info(LogManager.getHeader(context, "show_suggest_form", "problem=false")); request.setAttribute("authenticated.email", authEmail); request.setAttribute("eperson.name", userName); JSPManager.showJSP(request, response, "/suggest/suggest.jsp"); //asd } } protected void doDSPost(Context context, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, SQLException, AuthorizeException { // Treat as a GET doDSGet(context, request, response); } }