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.token;
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.ActionErrors;
29 import org.apache.struts.action.ActionForm;
30 import org.apache.struts.action.ActionForward;
31 import org.apache.struts.action.ActionMapping;
32 import org.apache.struts.action.ActionMessage;
33 import org.apache.struts.action.ActionMessages;
34
35 /**
36 * Retrieve and process data from the submitted form
37 *
38 * @version $Rev$ $Date$
39 */
40 public class ProcessTokenAction extends Action {
41 private static final long serialVersionUID = -5017052903191285282L;
42
43 // ------------------------------------------------------------ Constructors
44
45 /**
46 * Constructor for ProcessOptionsAction.
47 */
48 public ProcessTokenAction() {
49 super();
50 }
51
52 // ---------------------------------------------------------- Action Methods
53
54 /**
55 * Process the request and return an <code>ActionForward</code> instance
56 * describing where and how control should be forwarded, or
57 * <code>null</code>if the response has already been completed.
58 *
59 * @param mapping The ActionMapping used to select this instance
60 * @param form The optional ActionForm bean for this request (if any)
61 * @param request The HTTP request we are processing
62 * @param response The HTTP response we are creating
63 *
64 * @exception Exception if the application logic throws an exception
65 *
66 * @return the ActionForward for the next view
67 */
68 public ActionForward execute(
69 ActionMapping mapping,
70 ActionForm form,
71 HttpServletRequest request,
72 HttpServletResponse response)
73 throws Exception {
74
75 // If user pressed 'Cancel' button,
76 // return to home page
77 if (isCancelled(request)) {
78 return mapping.findForward("home");
79 }
80
81 ActionErrors errors = new ActionErrors();
82
83 // Prevent unintentional duplication submissions by checking
84 // that we have not received this token previously
85 if (!isTokenValid(request)) {
86 errors.add(
87 ActionMessages.GLOBAL_MESSAGE,
88 new ActionMessage("errors.token"));
89 }
90 resetToken(request);
91
92 // Report any errors we have discovered back to the original form
93 if (!errors.isEmpty()) {
94 saveErrors(request, errors);
95 saveToken(request);
96 return (mapping.getInputForward());
97 }
98
99 // Forward to result page
100 return mapping.findForward("success");
101 }
102 }