View Javadoc

1   //
2   //  ========================================================================
3   //  Copyright (c) 1995-2013 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  
19  package org.eclipse.jetty.servlet;
20  
21  import java.io.IOException;
22  
23  import javax.servlet.GenericServlet;
24  import javax.servlet.ServletException;
25  import javax.servlet.ServletRequest;
26  import javax.servlet.ServletResponse;
27  import javax.servlet.http.HttpServletRequest;
28  
29  import org.eclipse.jetty.server.Dispatcher;
30  import org.eclipse.jetty.server.HttpConnection;
31  import org.eclipse.jetty.server.Request;
32  import org.eclipse.jetty.server.handler.ContextHandler;
33  import org.eclipse.jetty.util.URIUtil;
34  import 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   */
45  public 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 }