| | |
| | | */ |
| | | package de.uhilger.wbx.web; |
| | | |
| | | import de.uhilger.wbx.Bild; |
| | | import java.awt.Container; |
| | | import java.awt.Image; |
| | | import java.awt.MediaTracker; |
| | | import java.awt.Toolkit; |
| | | import java.io.File; |
| | | import java.io.IOException; |
| | | import java.util.logging.Level; |
| | | import java.io.UnsupportedEncodingException; |
| | | import java.net.URLDecoder; |
| | | import java.util.logging.Logger; |
| | | import javax.servlet.ServletException; |
| | | import javax.servlet.http.HttpServletRequest; |
| | | import javax.servlet.http.HttpServletResponse; |
| | | import net.coobird.thumbnailator.Thumbnails; |
| | | import org.apache.catalina.servlets.DefaultServlet; |
| | | |
| | | /** |
| | |
| | | * Miniaturansicht erzeugt werden, wie sie im Dateimanager |
| | | * der WebBox verwendet wird. |
| | | * |
| | | * Unterstuetzt werden die Varianten |
| | | * 120 (_tn), 240 (_kl), 500 (_dd), 700 (_mt), 1200 (_gr) |
| | | */ |
| | | public class TNServlet extends DefaultServlet { |
| | | |
| | |
| | | * Diese String-Konstanten noetigenfalls in eine |
| | | * Konfigurationsdatei auslagern |
| | | */ |
| | | public static final String TN = "_tn"; |
| | | public static final String TN = "_tn"; // 120 |
| | | public static final String KL = "_kl"; // 240 |
| | | public static final String SM = "_sm"; // 500 |
| | | public static final String MT = "_mt"; // 700 |
| | | public static final String GR = "_gr"; // 1200 |
| | | |
| | | public static final String JPG = ".jpg"; |
| | | public static final String JPEG = ".jpeg"; |
| | | public static final String PNG = ".png"; |
| | |
| | | String uriStr = request.getRequestURI(); |
| | | String relname = uriStr.substring(request.getContextPath().length()); |
| | | |
| | | // --- Logausgabe Start |
| | | /* |
| | | File urifile = new File(uriStr); |
| | | uriStr = uriStr.substring(request.getContextPath().length()); |
| | | File dir = new File(request.getServletContext().getRealPath("/")); |
| | | File imgfile = new File(dir, uriStr); |
| | | |
| | | File logurifile = new File(uriStr); |
| | | String loguriStr = uriStr.substring(request.getContextPath().length()); |
| | | File logdir = new File(request.getServletContext().getRealPath("/")); |
| | | File imgfile = new File(logdir, loguriStr); |
| | | StringBuffer buf = new StringBuffer(); |
| | | buf.append("contextPath: "); |
| | | buf.append(request.getContextPath()); |
| | |
| | | buf.append(request.getServletContext().getRealPath("/")); |
| | | buf.append("\n"); |
| | | buf.append("urifile: "); |
| | | buf.append(urifile.getAbsolutePath()); |
| | | buf.append(logurifile.getAbsolutePath()); |
| | | buf.append("\n"); |
| | | buf.append("imgfile: "); |
| | | buf.append(imgfile.getAbsolutePath()); |
| | | logger.fine(buf.toString()); |
| | | //System.out.println("TNServlet uri parts " + buf.toString()); |
| | | */ |
| | | |
| | | if(uriStr.contains(TN) && (uriStr.endsWith(JPG) || uriStr.endsWith(JPEG) || uriStr.endsWith(PNG))) { |
| | | /* |
| | | TODO: hier mit Hilfe der Klasse Bild eine Miniaturansicht erzeugen |
| | | und in die Antwort schreiben |
| | | */ |
| | | // --- Logausgabe Ende |
| | | |
| | | if(uriStr.endsWith(JPG) || uriStr.endsWith(JPEG) || uriStr.endsWith(PNG)) { |
| | | File dir = new File(request.getServletContext().getRealPath("/")); |
| | | relname = relname.replace(TN, ""); |
| | | File imgfile = new File(dir, relname); |
| | | Image image = Toolkit.getDefaultToolkit().getImage(imgfile.getAbsolutePath()); |
| | | MediaTracker mediaTracker = new MediaTracker(new Container()); |
| | | mediaTracker.addImage(image, 0); |
| | | try { |
| | | mediaTracker.waitForID(0); |
| | | |
| | | if (!mediaTracker.isErrorAny()) { |
| | | Bild bild = new Bild(); |
| | | bild.writeImageStream(image, bild.getVariantenGroesse(Bild.WINZIG), bild.getMimeType(imgfile), response.getOutputStream()); |
| | | } |
| | | } catch (InterruptedException ex) { |
| | | logger.log(Level.SEVERE, ex.getLocalizedMessage(), ex); |
| | | } |
| | | |
| | | } else { |
| | | super.doGet(request, response); |
| | | String suburiStr = uriStr.substring(request.getContextPath().length()); |
| | | File imgfile = new File(dir, suburiStr); |
| | | if(uriStr.contains(TN)) { |
| | | bildErzeugen(dir, relname, TN, 120, imgfile); |
| | | } else if(uriStr.contains(KL)) { |
| | | bildErzeugen(dir, relname, KL, 240, imgfile); |
| | | } else if(uriStr.contains(SM)) { |
| | | bildErzeugen(dir, relname, SM, 500, imgfile); |
| | | } else if(uriStr.contains(MT)) { |
| | | bildErzeugen(dir, relname, MT, 700, imgfile); |
| | | } else if(uriStr.contains(GR)) { |
| | | bildErzeugen(dir, relname, GR, 1200, imgfile); |
| | | } |
| | | } |
| | | |
| | | |
| | | super.doGet(request, response); |
| | | } |
| | | |
| | | private void bildErzeugen(File dir, String relname, String indicator, int gr, File tnfile) |
| | | throws UnsupportedEncodingException, IOException { |
| | | //File dir = new File(request.getServletContext().getRealPath("/")); |
| | | // System.out.println("TNServlet dir: " + dir); |
| | | relname = relname.replace(indicator, ""); |
| | | // System.out.println("TNServlet bildAusgeben relname: " + relname); |
| | | // relname: /test/img/IMG_0524.png |
| | | File imgfile = new File(dir, URLDecoder.decode(relname, "utf-8")); |
| | | |
| | | // 120, 240, 500, 700, 1200 |
| | | |
| | | /*Thumbnails.of(imgfile) |
| | | .size(gr, gr) |
| | | .keepAspectRatio(true) |
| | | .outputQuality(0.7) |
| | | .toOutputStream(response.getOutputStream());*/ |
| | | if(imgfile.exists() && !tnfile.exists()) { |
| | | Thumbnails.of(imgfile) |
| | | .size(gr, gr) |
| | | .keepAspectRatio(true) |
| | | .outputQuality(0.7) |
| | | .toFile(tnfile); |
| | | } |
| | | } |
| | | } |