PlayLotteryServlet


1   /*
2    * The contents of this file are subject to the terms
3    * of the Common Development and Distribution License
4    * (the License).  You may not use this file except in
5    * compliance with the License.
6    *
7    * You can obtain a copy of the license at
8    * https://glassfish.dev.java.net/public/CDDLv1.0.html or
9    * glassfish/bootstrap/legal/CDDLv1.0.txt.
10   * See the License for the specific language governing
11   * permissions and limitations under the License.
12   *
13   * When distributing Covered Code, include this CDDL
14   * Header Notice in each file and include the License file
15   * at glassfish/bootstrap/legal/CDDLv1.0.txt.
16   * If applicable, add the following below the CDDL Header,
17   * with the fields enclosed by brackets [] replaced by
18   * you own identifying information:
19   * "Portions Copyrighted [year] [name of copyright owner]"
20   *
21   * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22   */
23  
24  package enterprise.lottery_annotation_web_servlet;
25  
26  import java.io.IOException  ;
27  import java.util.Locale  ; 
28  import java.util.ResourceBundle  ; 
29  
30  import javax.naming.InitialContext  ;
31  import javax.servlet.http.HttpServlet  ;
32  import javax.servlet.http.HttpServletRequest  ;
33  import javax.servlet.http.HttpServletResponse  ;
34  import javax.servlet.RequestDispatcher  ;
35  import javax.servlet.ServletException  ;
36  
37  import enterprise.lottery_annotation_ejb_stateful.Lottery;
38  import enterprise.lottery_annotation_ejb_stateless.Dice;
39  
40  
41  public class PlayLotteryServlet extends HttpServlet   {
42      
43      /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
44       * @param request servlet request
45       * @param response servlet response
46       */
47      protected void processRequest(HttpServletRequest   request, HttpServletResponse   response)
48      throws ServletException  , IOException   {
49          response.setContentType("text/html");
50  
51      Lottery lottery;
52          Dice dice;
53          int NO_OF_DIGITS = 6;
54          ResourceBundle   rb = ResourceBundle.getBundle("LocalStrings", Locale.getDefault());
55  
56          try {
57              InitialContext   initContext  = new InitialContext  ();
58  
59              lottery = 
60                  (Lottery) initContext.lookup("enterprise.lottery_annotation_ejb_stateful.Lottery");
61          dice =
62                  (Dice) initContext.lookup("enterprise.lottery_annotation_ejb_stateless.Dice");
63          } 
64          catch (Exception   e) { 
65              System.out.println(rb.getString("exception_creating_initial_context") +
66                  ": " + e.toString()); 
67              return; 
68          } 
69  
70      lottery.setName(request.getParameter("lottery_name"));
71  
72      for(int i=0; i<NO_OF_DIGITS; i++) {
73              lottery.select(dice.play());
74          }
75  
76      String   lotteryName = lottery.getName();
77          String   lotteryNumber = lottery.getNumber();
78      String   lotteryDate = lottery.getDate();
79  
80          //set the results in the Request object
81          request.setAttribute("lottery_name", lottery.getName()); 
82          request.setAttribute("lottery_number", lottery.getNumber()); 
83          request.setAttribute("lottery_date", lottery.getDate()); 
84  
85          // dispatch jsp for output
86          response.setContentType("text/html");  
87          RequestDispatcher   dispatcher = 
88              getServletContext().getRequestDispatcher("/LotteryView.jsp"); 
89          dispatcher.include(request, response);
90          return;
91      }
92  
93  
94      /** Handles the HTTP <code>GET</code> method.
95       * @param request servlet request
96       * @param response servlet response
97       */
98      protected void doGet(HttpServletRequest   request, HttpServletResponse   response)
99      throws ServletException  , IOException   {
100         processRequest(request, response);
101     }
102     
103 
104     /** Handles the HTTP <code>POST</code> method.
105      * @param request servlet request
106      * @param response servlet response
107      */
108     protected void doPost(HttpServletRequest   request, HttpServletResponse   response)
109     throws ServletException  , IOException   {
110         processRequest(request, response);
111     }
112     
113 
114     /** Returns a short description of the servlet.
115      */
116     public String   getServletInfo() {
117         ResourceBundle   rb = ResourceBundle.getBundle("LocalStrings", Locale.getDefault());
118         return rb.getString("servlet_description"); 
119     }
120 }
121
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Free Books Free Magazines
Popular Tags