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| | | package de.uhilger.filecms.web; |
| | | |
| | | import static de.uhilger.filecms.web.Initialiser.FILE_BASE; |
| | | import de.vogella.rss.model.Feed; |
| | | import de.vogella.rss.model.FeedMessage; |
| | | import de.vogella.rss.write.RSSStreamFeedWriter; |
| | | import java.io.File; |
| | | import java.io.FileReader; |
| | | import java.io.IOException; |
| | | import java.io.Reader; |
| | | import java.text.SimpleDateFormat; |
| | | import java.util.ArrayList; |
| | | import java.util.Calendar; |
| | | import java.util.Collections; |
| | | import java.util.Comparator; |
| | | import java.util.Date; |
| | | import java.util.GregorianCalendar; |
| | | import java.util.Iterator; |
| | | import java.util.List; |
| | | import java.util.Locale; |
| | | import java.util.logging.Level; |
| | | import java.util.logging.Logger; |
| | | import javax.servlet.ServletContext; |
| | | import javax.servlet.ServletException; |
| | | import javax.servlet.ServletOutputStream; |
| | | import javax.servlet.http.HttpServletRequest; |
| | | import javax.servlet.http.HttpServletResponse; |
| | | import org.apache.catalina.servlets.DefaultServlet; |
| | | |
| | | /** |
| | | * Das FeedServlet erstellt Feeds von Ordnern der WebBox |
| | | * |
| | | * Eine Maximaltiefe als Parameter soll regeln, wie viele Ordner tief |
| | | * Dateien gesucht werden |
| | | * |
| | | */ |
| | | public class FeedServlet extends DefaultServlet { |
| | | |
| | | private static final Logger logger = Logger.getLogger(FeedServlet.class.getName()); |
| | | private int maxTiefe = 3; |
| | | private int maxBeitraege = 5; |
| | | |
| | | @Override |
| | | protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { |
| | | ServletOutputStream out = response.getOutputStream(); |
| | | response.setContentType("text/xml"); |
| | | String url = request.getRequestURL().toString(); |
| | | logger.fine(url); |
| | | String dataUrl = url.replace("feed/", "data/"); |
| | | logger.fine(dataUrl); |
| | | int pos = dataUrl.indexOf("data/"); |
| | | String zielPfad = dataUrl.substring(pos); |
| | | logger.fine(zielPfad); |
| | | ServletContext ctx = request.getServletContext(); |
| | | Object o = ctx.getAttribute(FILE_BASE); |
| | | if(o instanceof String) { |
| | | String basis = o.toString(); |
| | | logger.fine(basis); |
| | | StringBuffer pfad = new StringBuffer(); |
| | | pfad.append(basis); |
| | | pfad.append(zielPfad.replace("data/", "/www/")); |
| | | logger.fine(pfad.toString()); |
| | | File dir = new File(pfad.toString()); |
| | | if(dir.isDirectory()) { |
| | | ArrayList beitraege = new ArrayList(); |
| | | collectFiles(dir, 0, beitraege); |
| | | Iterator i = beitraege.iterator(); |
| | | while(i.hasNext()) { |
| | | File f = (File) i.next(); |
| | | logger.fine(f.getAbsolutePath() + " " + f.lastModified()); |
| | | } |
| | | writeFeed("Newsfeed", "Neueste Inhalte von Ulrich Hilger", out, beitraege, basis, pfad.toString()); |
| | | } else { |
| | | logger.fine(dir.getAbsolutePath() + " ist kein Ordner."); |
| | | } |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * Diese Methode funktioniert nur, wenn entweder ein Ordner uebergeben |
| | | * wird, der keine Unterordner enthaelt wie zum Beispiel der Ordner 'neu' |
| | | * der Bildersammlung oder ein Ordner, dessen Unterordner |
| | | * nach dem Schema Jahr, Monat benannt sind wie bei einem Journal, das |
| | | * die Beitraege wie folgt enthaelt: |
| | | * Journal-Ordner |
| | | * 2018 |
| | | * 12 |
| | | * 11 |
| | | * 10 |
| | | * usw. |
| | | * 2017 |
| | | * 12 |
| | | * 11 |
| | | * 10 |
| | | * usw. |
| | | * |
| | | * @param out |
| | | * @param dir |
| | | * @param tiefe |
| | | * @param dateizaehler |
| | | */ |
| | | private void collectFiles(File dir, int tiefe, List beitraege) { |
| | | List dirs = new ArrayList(); |
| | | List beitraegeHier = new ArrayList(); |
| | | File[] files = dir.listFiles(); |
| | | for(int i = 0; i < files.length; i++) { |
| | | if(files[i].isDirectory()) { |
| | | if(tiefe < maxTiefe) { |
| | | dirs.add(files[i]); |
| | | } |
| | | } else { |
| | | beitraegeHier.add(files[i]); |
| | | } |
| | | } |
| | | if(dirs.size() > 0) { |
| | | // hier zuvor die Verzeichnissse absteigend nach Name sortieren |
| | | Collections.sort(dirs, new Comparator<File>() { |
| | | @Override |
| | | public int compare(File o1, File o2) { |
| | | return o2.getName().compareTo(o1.getName()); |
| | | } |
| | | }); |
| | | Iterator i = dirs.iterator(); |
| | | while(i.hasNext() && beitraege.size() < maxBeitraege) { |
| | | collectFiles((File) i.next(), ++tiefe, beitraege); |
| | | } |
| | | } |
| | | if(beitraegeHier.size() > 0) { |
| | | // hier zuvor die Liste der Beitraege dieses Ordners nach lastModified absteigend sortieren |
| | | // dann die neuesten in beitraege aufnehmen, bis die maximale Zahl gesuchter |
| | | // neuer Beitraege erreicht ist. |
| | | |
| | | Collections.sort(beitraegeHier, new Comparator<File>() { |
| | | @Override |
| | | public int compare(File o1, File o2) { |
| | | int ergebnis; |
| | | if(o1.lastModified() > o2.lastModified()) { |
| | | ergebnis = -1; |
| | | } else if(o2.lastModified() > o1.lastModified()) { |
| | | ergebnis = 1; |
| | | } else { |
| | | ergebnis = 0; |
| | | } |
| | | return ergebnis; |
| | | } |
| | | }); |
| | | |
| | | Iterator i = beitraegeHier.iterator(); |
| | | while(i.hasNext() && beitraege.size() < maxBeitraege) { |
| | | beitraege.add(i.next()); |
| | | } |
| | | |
| | | } |
| | | } |
| | | |
| | | public void writeFeed(String feedTitel, String beschr, ServletOutputStream s, List beitraege, String basis, String pfad) { |
| | | String copyright = "Copyright (c) 2018 Ulrich Hilger"; |
| | | String title = feedTitel; |
| | | String description = beschr; |
| | | String language = "de"; |
| | | String link = "https://www.uhilger.de"; |
| | | Calendar cal = new GregorianCalendar(); |
| | | Date creationDate = cal.getTime(); |
| | | SimpleDateFormat date_format = new SimpleDateFormat( |
| | | "EEE', 'dd' 'MMM' 'yyyy' 'HH:mm:ss' 'Z", Locale.US); |
| | | String pubdate = date_format.format(creationDate); |
| | | Feed rssFeed = new Feed(title, link, description, language, |
| | | copyright, pubdate); |
| | | |
| | | Iterator i = beitraege.iterator(); |
| | | while(i.hasNext()) { |
| | | File f = (File) i.next(); |
| | | FeedMessage feedEintrag = new FeedMessage(); |
| | | feedEintrag.setTitle(f.getName()); |
| | | //feedEintrag.setDescription("Beschreibung hier"); |
| | | feedEintrag.setAuthor("ulrich Punkt hilger bei web Punkt de (Ulrich Hilger)"); |
| | | |
| | | String urlStr = f.getAbsolutePath(); |
| | | urlStr = urlStr.replace(basis, "https://uhilger.de"); |
| | | urlStr = urlStr.replace("www/", "data/"); |
| | | |
| | | logger.fine(urlStr); |
| | | |
| | | feedEintrag.setGuid(urlStr); |
| | | feedEintrag.setLink(urlStr); |
| | | logger.fine(f.getName()); |
| | | feedEintrag.setDescription(readFilePart(f, urlStr)); |
| | | rssFeed.getMessages().add(feedEintrag); |
| | | } |
| | | |
| | | RSSStreamFeedWriter writer = new RSSStreamFeedWriter(rssFeed, s); |
| | | //RSSFeedWriter writer = new RSSFeedWriter(rssFeed, pfad + "/articles.rss"); |
| | | //ByteArrayOutputStream bs = new ByteArrayOutputStream(); |
| | | //RSSByteFeedWriter wr = new RSSByteFeedWriter(rssFeed, bs); |
| | | try { |
| | | writer.write(); |
| | | //s.print(bs.toString()); |
| | | } catch (Exception e) { |
| | | logger.log(Level.SEVERE, e.getMessage(), e); |
| | | } |
| | | } |
| | | |
| | | private String readFilePart(File f, String urlStr) { |
| | | StringBuffer buf = new StringBuffer(); |
| | | Reader reader = null; |
| | | try { |
| | | String fn = f.getName().toLowerCase(); |
| | | if(fn.endsWith(".jpg") || fn.endsWith(".jpeg") || fn.endsWith(".png")) { |
| | | String noExt; |
| | | String ext; |
| | | int dotpos = urlStr.lastIndexOf('.'); |
| | | if(dotpos > -1) { |
| | | noExt = urlStr.substring(0, dotpos); |
| | | ext = urlStr.substring(dotpos); |
| | | } else { |
| | | noExt = ""; |
| | | ext = ""; |
| | | } |
| | | buf.append("<a href='"); |
| | | buf.append(urlStr); |
| | | buf.append("'><img src='"); |
| | | buf.append(noExt); |
| | | buf.append("_kl"); |
| | | buf.append(ext); |
| | | buf.append("'></a>"); |
| | | } else { |
| | | reader = new FileReader(f); |
| | | char[] readBuffer = new char[1024]; |
| | | int charsRead = reader.read(readBuffer); |
| | | buf.append(readBuffer); |
| | | reader.close(); |
| | | } |
| | | return buf.toString(); |
| | | } catch (Exception ex) { |
| | | logger.log(Level.SEVERE, null, ex); |
| | | return buf.toString(); |
| | | } |
| | | } |
| | | |
| | | |
| | | } |