Struts1.2.4学习心得!(四)-优快云博客

本次博客记录了第四次学习中，struts1.1的不同之处，即ActionForm类不仅可以是String型，还能是任意数据类型。同时介绍了表单录入（含bean的嵌套），以testBean类为例，说明如何为嵌套类的属性设定值。

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第四次学习:

这次学习碰到了与struts1.1很不同的地方,就是ActionForm类不仅仅是String型,可以是任意数据类型了.

1.表单录入(含bean的嵌套).

设有一个testBean类,这个类中又含有一个nested属性(nested为一个类的实例),当要为nested类的booleanProperty属性设定值时用nested.booleanProperty指定位置.下面例子录入数据时,数据填充到testBean和nested中去.

java代码:


2<%@ taglib uri="/tags/struts-bean" prefix="bean" %> 
3<%@ taglib uri="/tags/struts-html" prefix="html" %> 
4<%@ taglib uri="/tags/struts-logic" prefix="logic" %> 
5<html:html> 
<head> 
<title>Test struts-html Property Setters</title> 
</head> 
<body> 
<div align="center"> 
 <h1>Test struts-html Property Setters</h1> 
</div> 
<p>Whatever changes you make to properties should be reflected when the page is redisplayed. Press "Save" to update, or "Cancel" to return to the main menu.</p> 
<html:form action="/html-setters-submit"> 
 <table border="0" width="100%"> 
  <tr> 
   <th align="center" colspan="4">Scalar Properties</th> 
  </tr> 
  <tr> 
   <th align="right">booleanProperty</th> 
   <td align="left"> 
    <html:checkbox property="booleanProperty" /> 
   </td> 
   <th align="right">nested.booleanProperty</th> 
   <td align="left"> 
    <html:checkbox property="nested.booleanProperty" /> 
   </td> 
  </tr> 
  <tr> 
   <th align="right">doubleProperty</th> 
   <td align="left"> 
    <html:text property="doubleProperty" size="32" /> 
   </td> 
   <th align="right">nested.doubleProperty</th> 
   <td align="left"> 
    <html:text property="nested.doubleProperty" size="32" /> 
   </td> 
  </tr> 
  <tr> 
   <th align="right">floatProperty</th> 
   <td align="left"> 
    <html:text property="floatProperty" size="32" /> 
   </td> 
   <th align="right">nested.floatProperty</th> 
   <td align="left"> 
    <html:text property="nested.floatProperty" size="32" /> 
   </td> 
  </tr> 
  <tr> 
   <th align="right">intProperty</th> 
   <td align="left"> 
    <html:text property="intProperty" size="32" /> 
   </td> 
   <th align="right">nested.intProperty</th> 
   <td align="left"> 
    <html:text property="nested.intProperty" size="32" /> 
   </td> 
  </tr> 
  <tr> 
   <th align="right">longProperty</th> 
   <td align="left"> 
    <html:text property="longProperty" size="32" /> 
   </td> 
   <th align="right">nested.longProperty</th> 
   <td align="left"> 
    <html:text property="nested.longProperty" size="32" /> 
   </td> 
  </tr> 
  <tr> 
   <th align="right">stringProperty</th> 
   <td align="left"> 
    <html:text property="stringProperty" size="32" /> 
   </td> 
   <th align="right">nested.stringProperty</th> 
   <td align="left"> 
    <html:text property="nested.stringProperty" size="32" /> 
   </td> 
  </tr> 
  <tr> 
   <th align="center" colspan="4">Indexed Properties</th> 
  </tr> 
  <tr> 
   <th align="right">intIndexed[0]</th> 
   <td align="left"> 
    <html:text property="intIndexed[0]" size="32" /> 
   </td> 
   <th align="right">nested.intIndexed[0]</th> 
   <td align="left"> 
    <html:text property="nested.intIndexed[0]" size="32" /> 
   </td> 
  </tr> 
  <tr> 
   <th align="right">intIndexed[1]</th> 
   <td align="left"> 
    <html:text property="intIndexed[1]" size="32" /> 
   </td> 
   <th align="right">nested.intIndexed[1]</th> 
   <td align="left"> 
    <html:text property="nested.intIndexed[1]" size="32" /> 
   </td> 
  </tr> 
  <tr> 
   <th align="right">stringIndexed[0]</th> 
   <td align="left"> 
    <html:text property="stringIndexed[0]" size="32" /> 
   </td> 
   <th align="right">nested.stringIndexed[0]</th> 
   <td align="left"> 
    <html:text property="nested.stringIndexed[0]" size="32" /> 
   </td> 
  </tr> 
  <tr> 
   <th align="right">stringIndexed[1]</th> 
   <td align="left"> 
    <html:text property="stringIndexed[1]" size="32" /> 
   </td> 
   <th align="right">nested.stringIndexed[1]</th> 
   <td align="left"> 
    <html:text property="nested.stringIndexed[1]" size="32" /> 
   </td> 
  </tr> 
  <tr> 
   <td></td> 
   <td align="right"> 
    <html:submit>Save</html:submit> 
   </td> 
   <td align="left"> 
    <html:reset>Reset</html:reset> 
    <html:cancel>Cancel</html:cancel> 
   </td> 
   <td></td> 
  </tr> 
 </table> 
</html:form> 
</body> 
136</html:html> 

138

对应的TestBean

java代码:

1
2/* 
3 * $Header: /home/cvs/jakarta-struts/src/examples/org/apache/struts/webapp/exercise/TestBean.java,v 1.4 2004/03/14 06:23:52 sraeburn Exp $ 
4 * $Revision: 1.4 $ 
5 * $Date: 2004/03/14 06:23:52 $ 
6 * 
7 * Copyright 1999-2004 The Apache Software Foundation. 
8 * 
9 * Licensed under the Apache License, Version 2.0 (the "License"); 
10 * you may not use this file except in compliance with the License. 
11 * You may obtain a copy of the License at 
12 * 
13 *   http://www.apache.org/licenses/LICENSE-2.0 
14 * 
15 * Unless required by applicable law or agreed to in writing, software 
16 * distributed under the License is distributed on an "AS IS" BASIS, 
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
18 * See the License for the specific language governing permissions and 
19 * limitations under the License. 
20 */
21
22
23package org.apache.struts.webapp.exercise; 
24
25
26import java.util.ArrayList; 
27import java.util.Collection; 
28import java.util.HashMap; 
29import java.util.List; 
30import java.util.Map; 
31import java.util.Vector; 
32import javax.servlet.http.HttpServletRequest; 
33import org.apache.struts.action.ActionForm; 
34import org.apache.struts.action.ActionMapping; 
35import org.apache.struts.util.LabelValueBean; 
36
37
38/** 
39 * General purpose test bean for Struts custom tag tests. 
40 * 
41 * @version $Revision: 1.4 $ $Date: 2004/03/14 06:23:52 $ 
42 */
43
44publicclass TestBean extends ActionForm {...}
45
46
47// ------------------------------------------------------------- Properties
48
49
50/** 
51  * A collection property where the elements of the collection are 
52  * of type <code>LabelValueBean</code>. 
53  */
54privateCollection beanCollection = null; 
55
56publicCollection getBeanCollection(){...}
57if(beanCollection == null){...}

58      Vector entries = new Vector(10); 
59 
60      entries.add(new LabelValueBean("Label 0", "Value 0")); 
61      entries.add(new LabelValueBean("Label 1", "Value 1")); 
62      entries.add(new LabelValueBean("Label 2", "Value 2")); 
63      entries.add(new LabelValueBean("Label 3", "Value 3")); 
64      entries.add(new LabelValueBean("Label 4", "Value 4")); 
65      entries.add(new LabelValueBean("Label 5", "Value 5")); 
66      entries.add(new LabelValueBean("Label 6", "Value 6")); 
67      entries.add(new LabelValueBean("Label 7", "Value 7")); 
68      entries.add(new LabelValueBean("Label 8", "Value 8")); 
69      entries.add(new LabelValueBean("Label 9", "Value 9")); 
70 
71      beanCollection = entries; 
72    }
73
74return(beanCollection); 
75}
76
77publicvoid setBeanCollection(Collection beanCollection){...}

78    this.beanCollection = beanCollection; 
79  }
80
81
82/** 
83  * A multiple-String SELECT element using a bean collection. 
84  */
85privateString[] beanCollectionSelect = { "Value 1", "Value 3", 
86                       "Value 5" }; 
87
88publicString[] getBeanCollectionSelect(){...}

89    return (this.beanCollectionSelect); 
90  }
91
92publicvoid setBeanCollectionSelect(String beanCollectionSelect[]){...}

93    this.beanCollectionSelect = beanCollectionSelect; 
94  }
95
96
97/** 
98  * A boolean property whose initial value is true. 
99  */
100privateboolean booleanProperty = true; 
101
102publicboolean getBooleanProperty(){...}

103    return (booleanProperty); 
104  }
105
106publicvoid setBooleanProperty(boolean booleanProperty){...}

107    this.booleanProperty = booleanProperty; 
108  }
109
110
111/** 
112  * A multiple-String SELECT element using a collection. 
113  */
114privateString[] collectionSelect = { "Value 2", "Value 4", 
115                     "Value 6" }; 
116
117publicString[] getCollectionSelect(){...}

118    return (this.collectionSelect); 
119  }
120
121publicvoid setCollectionSelect(String collectionSelect[]){...}

122    this.collectionSelect = collectionSelect; 
123  }
124
125
126/** 
127  * A double property. 
128  */
129privatedouble doubleProperty = 321.0; 
130
131publicdouble getDoubleProperty(){...}

132    return (this.doubleProperty); 
133  }
134
135publicvoid setDoubleProperty(double doubleProperty){...}

136    this.doubleProperty = doubleProperty; 
137  }
138
139
140/** 
141  * A boolean property whose initial value is false 
142  */
143privateboolean falseProperty = false; 
144
145publicboolean getFalseProperty(){...}

146    return (falseProperty); 
147  }
148
149publicvoid setFalseProperty(boolean falseProperty){...}

150    this.falseProperty = falseProperty; 
151  }
152
153
154/** 
155  * A float property. 
156  */
157private float floatProperty = (float)123.0; 
158
159public float getFloatProperty(){...}

160    return (this.floatProperty); 
161  }
162
163publicvoid setFloatProperty(float floatProperty){...}

164    this.floatProperty = floatProperty; 
165  }
166
167
168/** 
169  * Integer arrays that are accessed as an array as well as indexed. 
170  */
171privateint intArray[] = {0, 10, 20, 30, 40}; 
172
173publicint[] getIntArray(){...}

174    return (this.intArray); 
175  }
176
177publicvoid setIntArray(int intArray[]){...}

178    this.intArray = intArray; 
179  }
180
181privateint intIndexed[] = {0, 10, 20, 30, 40}; 
182
183publicint getIntIndexed(int index){...}

184    return (intIndexed[index]); 
185  }
186
187publicvoid setIntIndexed(int index, int value){...}

188    intIndexed[index] = value; 
189  }
190
191
192privateint intMultibox[] = newint[0]; 
193
194publicint[] getIntMultibox(){...}

195    return (this.intMultibox); 
196  }
197
198publicvoid setIntMultibox(int intMultibox[]){...}

199    this.intMultibox = intMultibox; 
200  }
201
202/** 
203  * An integer property. 
204  */
205privateint intProperty = 123; 
206
207publicint getIntProperty(){...}

208    return (this.intProperty); 
209  }
210
211publicvoid setIntProperty(