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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
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RedirectFilter.java | 0% | 0% | 0% | 0% |
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// Copyright 2004, 2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package org.apache.tapestry;
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import java.io.IOException;
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import javax.servlet.Filter;
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import javax.servlet.FilterChain;
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import javax.servlet.FilterConfig;
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import javax.servlet.ServletException;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hivemind.HiveMind;
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/**
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* Filter used to redirect a root context URL (i.e., "/context" or "/context/" to the Tapestry
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* application servlet (typically, "/context/app"). This servlet is mapped to "/" and must have a
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* <init-parameter&;gt; <code>redirect-path</code> that is the application servlet's path
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* (i.e., "/app"). If no value is specified, then "/app" is used. The path is always relative to the
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* servlet context, and should always begin with a leading slash.
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* <p>
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* Filters are only available in Servlet API 2.3 and above.
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* <p>
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* Servlet API 2.4 is expected to allow a servlets in the welcome list (equivalent to index.html or
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* index.jsp), at which point this filter should no longer be necessary.
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*
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* @author Howard Lewis Ship
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* @since 3.0
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*/
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public class RedirectFilter implements Filter |
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{ |
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private static final Log LOG = LogFactory.getLog(RedirectFilter.class); |
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public static final String REDIRECT_PATH_PARAM = "redirect-path"; |
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private String _redirectPath;
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public void init(FilterConfig config) throws ServletException |
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{ |
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_redirectPath = config.getInitParameter(REDIRECT_PATH_PARAM); |
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if (HiveMind.isBlank(_redirectPath))
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_redirectPath = "/app";
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if (LOG.isDebugEnabled())
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LOG.debug(Tapestry.format("RedirectServlet.redirect-path", _redirectPath));
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} |
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public void destroy() |
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{ |
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} |
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/**
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* This filter intercepts the so-called "default" servlet, whose job is to provide access to
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* standard resources packaged within the web application context. This code is interested in
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* only the very root, redirecting to the appropriate Tapestry application servlet. Other values
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* are passed through unchanged.
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*/
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public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) |
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throws IOException, ServletException
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{ |
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HttpServletRequest hrequest = (HttpServletRequest) request; |
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HttpServletResponse hresponse = (HttpServletResponse) response; |
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String servletPath = hrequest.getServletPath(); |
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String pathInfo = hrequest.getPathInfo(); |
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// Been experimenting with different servlet containers. In Jetty 4.2.8 and Tomcat 4.1,
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// resources have a non-null servletPath. If JBossWeb 3.0.6, the servletPath is
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// null and the pathInfo indicates the relative location of the resource.
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if ((HiveMind.isBlank(servletPath) || servletPath.equals("/")) |
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&& (HiveMind.isBlank(pathInfo) || pathInfo.equals("/")))
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{ |
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String path = hrequest.getContextPath() + _redirectPath; |
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if (LOG.isDebugEnabled())
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LOG.debug(Tapestry.format("RedirectServlet.redirecting", path));
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hresponse.sendRedirect(path); |
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return;
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} |
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chain.doFilter(request, response); |
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} |
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} |
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