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 }