JspPropertyGroupServlet.java revision 03928aee4356845252ac6b662d5c72c29903813e 
1//
2//  ========================================================================
3//  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
4//  ------------------------------------------------------------------------
5//  All rights reserved. This program and the accompanying materials
6//  are made available under the terms of the Eclipse Public License v1.0
7//  and Apache License v2.0 which accompanies this distribution.
8//
9//      The Eclipse Public License is available at
10//      http://www.eclipse.org/legal/epl-v10.html
11//
12//      The Apache License v2.0 is available at
13//      http://www.opensource.org/licenses/apache2.0.php
14//
15//  You may elect to redistribute this code under either of these licenses.
16//  ========================================================================
17//
18
19package org.eclipse.jetty.servlet;
20
21import java.io.IOException;
22
23import javax.servlet.GenericServlet;
24import javax.servlet.ServletException;
25import javax.servlet.ServletRequest;
26import javax.servlet.ServletResponse;
27import javax.servlet.http.HttpServletRequest;
28
29import org.eclipse.jetty.server.Dispatcher;
30import org.eclipse.jetty.server.AbstractHttpConnection;
31import org.eclipse.jetty.server.Request;
32import org.eclipse.jetty.server.handler.ContextHandler;
33import org.eclipse.jetty.util.URIUtil;
34import org.eclipse.jetty.util.resource.Resource;
35
36
37/* ------------------------------------------------------------ */
38/** Servlet handling JSP Property Group mappings
39 * <p>
40 * This servlet is mapped to by any URL pattern for a JSP property group.
41 * Resources handled by this servlet that are not directories will be passed
42 * directly to the JSP servlet.    Resources that are directories will be
43 * passed directly to the default servlet.
44 */
45public class JspPropertyGroupServlet extends GenericServlet
46{
47    private static final long serialVersionUID = 3681783214726776945L;
48
49    public final static String NAME = "__org.eclipse.jetty.servlet.JspPropertyGroupServlet__";
50    private final ServletHandler _servletHandler;
51    private final ContextHandler _contextHandler;
52    private ServletHolder _dftServlet;
53    private ServletHolder _jspServlet;
54    private boolean _starJspMapped;
55
56    public JspPropertyGroupServlet(ContextHandler context, ServletHandler servletHandler)
57    {
58        _contextHandler=context;
59        _servletHandler=servletHandler;
60    }
61
62    @Override
63    public void init() throws ServletException
64    {
65        String jsp_name = "jsp";
66        ServletMapping servlet_mapping =_servletHandler.getServletMapping("*.jsp");
67        if (servlet_mapping!=null)
68        {
69            _starJspMapped=true;
70
71            //now find the jsp servlet, ignoring the mapping that is for ourself
72            ServletMapping[] mappings = _servletHandler.getServletMappings();
73            for (ServletMapping m:mappings)
74            {
75                String[] paths = m.getPathSpecs();
76                if (paths!=null)
77                {
78                    for (String path:paths)
79                    {
80                        if ("*.jsp".equals(path) && !NAME.equals(m.getServletName()))
81                            servlet_mapping = m;
82                    }
83                }
84            }
85
86            jsp_name=servlet_mapping.getServletName();
87        }
88        _jspServlet=_servletHandler.getServlet(jsp_name);
89
90        String dft_name="default";
91        ServletMapping default_mapping=_servletHandler.getServletMapping("/");
92        if (default_mapping!=null)
93            dft_name=default_mapping.getServletName();
94        _dftServlet=_servletHandler.getServlet(dft_name);
95    }
96
97    @Override
98    public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException
99    {
100        HttpServletRequest request = null;
101        if (req instanceof HttpServletRequest)
102            request = (HttpServletRequest)req;
103        else
104            throw new ServletException("Request not HttpServletRequest");
105
106        String servletPath=null;
107        String pathInfo=null;
108        if (request.getAttribute(Dispatcher.INCLUDE_REQUEST_URI)!=null)
109        {
110            servletPath=(String)request.getAttribute(Dispatcher.INCLUDE_SERVLET_PATH);
111            pathInfo=(String)request.getAttribute(Dispatcher.INCLUDE_PATH_INFO);
112            if (servletPath==null)
113            {
114                servletPath=request.getServletPath();
115                pathInfo=request.getPathInfo();
116            }
117        }
118        else
119        {
120            servletPath = request.getServletPath();
121            pathInfo = request.getPathInfo();
122        }
123
124        String pathInContext=URIUtil.addPaths(servletPath,pathInfo);
125
126        if (pathInContext.endsWith("/"))
127        {
128            _dftServlet.getServlet().service(req,res);
129        }
130        else if (_starJspMapped && pathInContext.toLowerCase().endsWith(".jsp"))
131        {
132            _jspServlet.getServlet().service(req,res);
133        }
134        else
135        {
136
137            Resource resource = _contextHandler.getResource(pathInContext);
138            if (resource!=null && resource.isDirectory())
139                _dftServlet.getServlet().service(req,res);
140            else
141                _jspServlet.getServlet().service(req,res);
142        }
143
144    }
145
146}
147