| // |
| // ======================================================================== |
| // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.servlets; |
| import java.io.IOException; |
| |
| import javax.servlet.Filter; |
| import javax.servlet.FilterChain; |
| import javax.servlet.FilterConfig; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| import javax.servlet.http.HttpServletRequest; |
| |
| /* ------------------------------------------------------------ */ |
| /** Welcome Filter |
| * This filter can be used to server an index file for a directory |
| * when no index file actually exists (thus the web.xml mechanism does |
| * not work). |
| * |
| * This filter will dispatch requests to a directory (URLs ending with /) |
| * to the welcome URL determined by the "welcome" init parameter. So if |
| * the filter "welcome" init parameter is set to "index.do" then a request |
| * to "/some/directory/" will be dispatched to "/some/directory/index.do" and |
| * will be handled by any servlets mapped to that URL. |
| * |
| * Requests to "/some/directory" will be redirected to "/some/directory/". |
| */ |
| public class WelcomeFilter implements Filter |
| { |
| private String welcome; |
| |
| public void init(FilterConfig filterConfig) |
| { |
| welcome=filterConfig.getInitParameter("welcome"); |
| if (welcome==null) |
| welcome="index.html"; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void doFilter(ServletRequest request, |
| ServletResponse response, |
| FilterChain chain) |
| throws IOException, ServletException |
| { |
| String path=((HttpServletRequest)request).getServletPath(); |
| if (welcome!=null && path.endsWith("/")) |
| request.getRequestDispatcher(path+welcome).forward(request,response); |
| else |
| chain.doFilter(request, response); |
| } |
| |
| public void destroy() {} |
| } |
| |