juplo.de Git - website/blob - src/main/java/de/juplo/branding/web/ForceIncludeFilter.java

   1 package de.juplo.branding.web;
   2
   3 import java.io.IOException;
   4 import javax.servlet.Filter;
   5 import javax.servlet.FilterChain;
   6 import javax.servlet.FilterConfig;
   7 import javax.servlet.ServletException;
   8 import javax.servlet.ServletRequest;
   9 import javax.servlet.ServletResponse;
  10 import javax.servlet.http.HttpServletRequest;
  11 import javax.servlet.http.HttpServletResponse;
  12 import org.apache.tiles.servlet.context.ServletUtil;
  13
  14
  15
  16 /**
  17  * Fixes a logic-bug in the colaboration of Thymeleaf and Tiles.
  18  *
  19  * Tiles 2.2.x tries to use RequestDispatcher.forward() whenever possible, but
  20  * this breaks Thymeleaf, because the original response is marked as committed,
  21  * when forwarding. Hence, Thymeleaf cannot render its result in the response
  22  * and an empty page is returned.
  23  *
  24  * @author kai
  25  */
  26 public class ForceIncludeFilter implements Filter
  27 {
  28
  29   @Override
  30   public void init(FilterConfig filterConfig) throws ServletException
  31   {
  32   }
  33
  34   @Override
  35   public void doFilter(
  36       ServletRequest request,
  37       ServletResponse response,
  38       FilterChain chain
  39       )
  40       throws
  41         IOException,
  42         ServletException
  43   {
  44     if ((response instanceof HttpServletResponse))
  45       ServletUtil.setForceInclude((HttpServletRequest)request, true);
  46
  47     chain.doFilter(request, response);
  48   }
  49
  50   @Override
  51   public void destroy()
  52   {
  53   }
  54
  55 }