From 8f9dc70df8ada3d05d545924bc419cf2d615cb3e Mon Sep 17 00:00:00 2001
From: ulrich <undisclosed>
Date: Thu, 23 Mar 2017 06:02:08 +0000
Subject: [PATCH] viewport metatag hinzugefuegt

---
 src/de/uhilger/wbx/web/TNServlet.java |   60 +++++++++++++++++++++++++++++++++++++++++++++++++++---------
 1 files changed, 51 insertions(+), 9 deletions(-)

diff --git a/src/de/uhilger/wbx/web/TNServlet.java b/src/de/uhilger/wbx/web/TNServlet.java
index 198bced..e681146 100644
--- a/src/de/uhilger/wbx/web/TNServlet.java
+++ b/src/de/uhilger/wbx/web/TNServlet.java
@@ -17,7 +17,16 @@
  */
 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.net.URLDecoder;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -30,6 +39,8 @@
  * 
  */
 public class TNServlet extends DefaultServlet {
+  
+  private static final Logger logger = Logger.getLogger(TNServlet.class.getName());
   
   /**
    * Diese String-Konstanten noetigenfalls in eine 
@@ -52,17 +63,48 @@
   protected void doGet(HttpServletRequest request, HttpServletResponse response)
           throws ServletException, IOException {
     
-    String urlStr = request.getRequestURI();
-    if(urlStr.contains(TN) && (urlStr.endsWith(JPG) || urlStr.endsWith(JPEG) || urlStr.endsWith(PNG))) {
-      /*
-      TODO: hier mit Hilfe der Klasse Bild eine Miniaturansicht erzeugen  
-      und in die Antwort schreiben
-      */      
+    String uriStr = request.getRequestURI();
+    String relname = uriStr.substring(request.getContextPath().length());
+    
+    // --- Logausgabe Start
+    File logurifile = new File(uriStr);
+    String loguriStr = uriStr.substring(request.getContextPath().length());
+    File logdir = new File(request.getServletContext().getRealPath("/"));
+    File logimgfile = new File(logdir, loguriStr);    
+    StringBuffer buf = new StringBuffer();
+    buf.append("contextPath: ");
+    buf.append(request.getContextPath());
+    buf.append("\n");
+    buf.append("realpath of /: ");
+    buf.append(request.getServletContext().getRealPath("/"));
+    buf.append("\n");
+    buf.append("urifile: ");
+    buf.append(logurifile.getAbsolutePath());
+    buf.append("\n");
+    buf.append("imgfile: ");
+    buf.append(logimgfile.getAbsolutePath());
+    logger.fine(buf.toString());
+    // --- Logausgabe Ende
+        
+    if(uriStr.contains(TN) && (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, URLDecoder.decode(relname, "utf-8"));
+      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);
     }
-            
-    
   }
-  
 }

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