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.options;
23
24 import java.util.ArrayList;
25 import java.util.HashMap;
26
27 import jakarta.servlet.http.HttpServletRequest;
28 import jakarta.servlet.http.HttpServletResponse;
29
30 import org.apache.struts.action.Action;
31 import org.apache.struts.action.ActionForm;
32 import org.apache.struts.action.ActionForward;
33 import org.apache.struts.action.ActionMapping;
34 import org.apache.struts.util.LabelValueBean;
35
36 /**
37 * Perform any tasks and setup any data that
38 * must be prepared before the form is displayed.
39 *
40 * @version $Rev$ $Date$
41 */
42 public class PrepareOptionsAction extends Action {
43 private static final long serialVersionUID = -138527557363506974L;
44
45 // ------------------------------------------------------------ Constructors
46
47 /**
48 * Constructor for PrepareOptionsAction.
49 */
50 public PrepareOptionsAction() {
51 super();
52 }
53
54 // ---------------------------------------------------------- Action Methods
55
56 /**
57 * Process the request and return an <code>ActionForward</code> instance
58 * describing where and how control should be forwarded, or
59 * <code>null</code>if the response has already been completed.
60 *
61 * @param mapping The ActionMapping used to select this instance
62 * @param form The optional ActionForm bean for this request (if any)
63 * @param request The HTTP request we are processing
64 * @param response The HTTP response we are creating
65 *
66 * @exception Exception if an exception occurs
67 *
68 * @return the ActionForward to forward control to
69 */
70 public ActionForward execute(
71 ActionMapping mapping,
72 ActionForm form,
73 HttpServletRequest request,
74 HttpServletResponse response)
75 throws Exception {
76
77 /* An array */
78 String[] fruits =
79 {
80 "Strawberry",
81 "Apple",
82 "Orange",
83 "Pear",
84 "Mango",
85 "Banana",
86 "Pineapple" };
87 request.setAttribute("fruits", fruits);
88
89 /* Two arrays - one for labels and one for values */
90 String[] colors =
91 { "Red", "Orange", "Yellow", "Green", "Blue", "Indigo", "Violet" };
92 request.setAttribute("colors", colors);
93
94 String[] colorCodes =
95 {
96 "#FF0000",
97 "#FFA500",
98 "#FFFF00",
99 "#00FF00",
100 "#0000FF",
101 "#4B0082",
102 "#EE82EE" };
103 request.setAttribute("colorCodes", colorCodes);
104
105 /* A Collection */
106 ArrayList<String> colorList = new ArrayList<>();
107 colorList.add("Red");
108 colorList.add("Orange");
109 colorList.add("Yellow");
110 colorList.add("Green");
111 colorList.add("Blue");
112 colorList.add("Indigo");
113 colorList.add("Violet");
114 request.setAttribute("colorCollection", colorList);
115
116 /* A Collection of LabelValue beans */
117 ArrayList<LabelValueBean> days = new ArrayList<>();
118 days.add(new LabelValueBean("Monday", "1"));
119 days.add(new LabelValueBean("Tuesday", "2"));
120 days.add(new LabelValueBean("Wednesday", "3"));
121 days.add(new LabelValueBean("Thursday", "4"));
122 days.add(new LabelValueBean("Friday", "5"));
123 days.add(new LabelValueBean("Saturday", "6"));
124 days.add(new LabelValueBean("Sunday", "7"));
125 request.setAttribute("days", days);
126
127 /* Collection of custom beans */
128 ArrayList<BookBean> books = new ArrayList<>();
129 books.add(new BookBean("0596003285", "Programming Jakarta Struts"));
130 books.add(new BookBean("1930110502", "Struts in Action"));
131 books.add(
132 new BookBean("1861007817", "Professional Struts Applications"));
133 books.add(new BookBean("0672324725", "Struts Kick Start"));
134 books.add(new BookBean("0471213020", "Mastering Jakarta Struts"));
135 books.add(new BookBean("1558608621", "The Struts Framework"));
136 books.add(new BookBean("0971661901", "Struts Fast Track"));
137 request.setAttribute("books", books);
138
139 /* A Map
140 *
141 * Note: We are using a HashMap which is unsorted - the resulting
142 * options could appear in any order. If you want to your options to be
143 * in a particular order you should you a SortedMap implementation such
144 * as the TreeMap. This behaviour is a feature of the standard Map
145 * implementaions and nothing to to with Struts tags.
146 *
147 * Also, we've used an Integer as the key to demonstrate that the
148 * <html:options> and <html:optionsCollection> tags do not require
149 * String values for the label and values. If they are passed an object
150 * other than a String, they will automatically call the toString()
151 * method and use the result.
152 */
153 HashMap<Integer, String> animals = new HashMap<>();
154 animals.put(1, "Cat");
155 animals.put(2, "Dog");
156 animals.put(3, "Horse");
157 animals.put(4, "Rabbit");
158 animals.put(5, "Goldfish");
159 request.setAttribute("animals", animals);
160
161 // Forward to form page
162 return mapping.findForward("success");
163 }
164 }