/
WelcomeFilter.java
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/
WelcomeFilter.java
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//
// ========================================================================
// Copyright (c) 1995-2021 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//
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;
import org.eclipse.jetty.util.URIUtil;
/**
* 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/".
*/
@Deprecated
public class WelcomeFilter implements Filter
{
private String welcome;
@Override
public void init(FilterConfig filterConfig)
{
welcome = filterConfig.getInitParameter("welcome");
if (welcome == null)
welcome = "index.html";
}
@Override
public void doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain)
throws IOException, ServletException
{
String path = ((HttpServletRequest)request).getServletPath();
if (welcome != null && path.endsWith("/"))
{
String uriInContext = URIUtil.encodePath(URIUtil.addPaths(path, welcome));
request.getRequestDispatcher(uriInContext).forward(request, response);
}
else
chain.doFilter(request, response);
}
@Override
public void destroy()
{
}
}