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1   /*
2    * $Id$
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  package examples.bean;
23  
24  import jakarta.servlet.http.HttpServletRequest;
25  import jakarta.servlet.http.HttpServletResponse;
26  
27  import org.apache.struts.action.Action;
28  import org.apache.struts.action.ActionForm;
29  import org.apache.struts.action.ActionForward;
30  import org.apache.struts.action.ActionMapping;
31  
32  /**
33   * Perform any tasks and setup any data that
34   * must be prepared before the form is displayed.
35   *
36   * @version $Rev$ $Date$
37   */
38  public class PrepareBeanAction extends Action {
39      private static final long serialVersionUID = -4921872230746775690L;
40  
41      // ------------------------------------------------------------ Constructors
42  
43      /**
44       * Constructor for PrepareBeanAction.
45       */
46      public PrepareBeanAction() {
47          super();
48      }
49  
50      // ---------------------------------------------------------- Action Methods
51  
52      /**
53       * Process the request and return an <code>ActionForward</code> instance
54       * describing where and how control should be forwarded, or
55       * <code>null</code>if the response has already been completed.
56       *
57       * @param mapping The ActionMapping used to select this instance
58       * @param form The optional ActionForm bean for this request (if any)
59       * @param request The HTTP request we are processing
60       * @param response The HTTP response we are creating
61       *
62       * @exception Exception if an exception occurs
63       *
64       * @return the ActionForward to forward control to
65       */
66      public ActionForward execute(
67          ActionMapping mapping,
68          ActionForm form,
69          HttpServletRequest request,
70          HttpServletResponse response)
71          throws Exception {
72  
73          // Set-up an example bean
74          ExampleBean example = new ExampleBean();
75          example.getList().add("List entry #1");
76          example.getList().add("List entry #2");
77          example.getList().add("List entry #3");
78          example.getList().add("List entry #4");
79  
80          // Add a nested bean
81          example.setNested(new NestedBean());
82  
83          // Place the example bean in the request scope
84          request.setAttribute("example", example);
85  
86          // Forward to the test page
87          return mapping.findForward("success");
88      }
89  }