KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > tester > Include00


1 /*
2  * Copyright 1999, 2000, 2001 ,2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.apache.tester;
18
19
20 import java.io.*;
21 import javax.servlet.*;
22 import javax.servlet.http.*;
23
24 /**
25  * Exercise basic including functionality.
26  *
27  * @author Craig R. McClanahan
28  * @version $Revision: 1.2 $ $Date: 2004/02/27 14:58:57 $
29  */
30
31 public class Include00 extends HttpServlet {
32
33
34     public void doGet(HttpServletRequest request, HttpServletResponse response)
35         throws IOException, ServletException {
36
37         // Prepare this response
38 StringBuffer JavaDoc sb = new StringBuffer JavaDoc();
39         response.setContentType("text/plain");
40     PrintWriter writer = response.getWriter();
41
42         // Acquire the path to which we will issue a include
43 String JavaDoc path = request.getParameter("path");
44         if (path == null)
45             path = "/Include00a";
46
47         // Acquire the flush flag
48 boolean flush = "true".equals(request.getParameter("flush"));
49
50         // Acquire the "create a session" flag
51 boolean create = "true".equals(request.getParameter("create"));
52
53         // Create a request dispatcher and call include() on it
54 RequestDispatcher rd = null;
55         if (path.startsWith("!"))
56             rd = getServletContext().getNamedDispatcher(path.substring(1));
57         else
58             rd = getServletContext().getRequestDispatcher(path);
59         if (rd == null) {
60             sb.append(" No RequestDispatcher returned/");
61         } else {
62             HttpSession session;
63             if (create) {
64                 session = request.getSession();
65             }
66             if (flush) {
67                 try {
68                     response.flushBuffer();
69                 } catch (IOException e) {
70                     sb.append(" Flush threw IOException/");
71                 }
72             }
73             if (sb.length() < 1)
74                 rd.include(request, response);
75         }
76
77         // Write our response if an error occurred
78 if (sb.length() >= 1) {
79             writer.print("Include00 FAILED -");
80             writer.println(sb.toString());
81             while (true) {
82                 String JavaDoc message = StaticLogger.read();
83                 if (message == null)
84                     break;
85                 writer.println(message);
86             }
87         }
88         StaticLogger.reset();
89
90     }
91
92 }
93
Popular Tags