本次博客记录第四次学习情况，碰到与Struts1.1不同之处，即ActionForm类不局限于String型，可为任意数据类型。还介绍了表单录入（含bean的嵌套），如通过指定位置为nested类的属性设定值，录入数据会填充到相应类中。
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.
对应的TestBean
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: |
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1 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> 6 <head> 7 <title>Test struts-html Property Setters</title> 8 </head> 9 <body> 10 <div align="center"> 11 <h1>Test struts-html Property Setters</h1> 12 </div> 13 <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> 14 <html:form action="/html-setters-submit"> 15 <table border="0" width="100%"> 16 <tr> 17 <th align="center" colspan="4">Scalar Properties</th> 18 </tr> 19 <tr> 20 <th align="right">booleanProperty</th> 21 <td align="left"> 22 <html:checkbox property="booleanProperty" /> 23 </td> 24 <th align="right">nested.booleanProperty</th> 25 <td align="left"> 26 <html:checkbox property="nested.booleanProperty" /> 27 </td> 28 </tr> 29 <tr> 30 <th align="right">doubleProperty</th> 31 <td align="left"> 32 <html:text property="doubleProperty" size="32" /> 33 </td> 34 <th align="right">nested.doubleProperty</th> 35 <td align="left"> 36 <html:text property="nested.doubleProperty" size="32" /> 37 </td> 38 </tr> 39 <tr> 40 <th align="right">floatProperty</th> 41 <td align="left"> 42 <html:text property="floatProperty" size="32" /> 43 </td> 44 <th align="right">nested.floatProperty</th> 45 <td align="left"> 46 <html:text property="nested.floatProperty" size="32" /> 47 </td> 48 </tr> 49 <tr> 50 <th align="right">intProperty</th> 51 <td align="left"> 52 <html:text property="intProperty" size="32" /> 53 </td> 54 <th align="right">nested.intProperty</th> 55 <td align="left"> 56 <html:text property="nested.intProperty" size="32" /> 57 </td> 58 </tr> 59 <tr> 60 <th align="right">longProperty</th> 61 <td align="left"> 62 <html:text property="longProperty" size="32" /> 63 </td> 64 <th align="right">nested.longProperty</th> 65 <td align="left"> 66 <html:text property="nested.longProperty" size="32" /> 67 </td> 68 </tr> 69 <tr> 70 <th align="right">stringProperty</th> 71 <td align="left"> 72 <html:text property="stringProperty" size="32" /> 73 </td> 74 <th align="right">nested.stringProperty</th> 75 <td align="left"> 76 <html:text property="nested.stringProperty" size="32" /> 77 </td> 78 </tr> 79 <tr> 80 <th align="center" colspan="4">Indexed Properties</th> 81 </tr> 82 <tr> 83 <th align="right">intIndexed[0]</th> 84 <td align="left"> 85 <html:text property="intIndexed[0]" size="32" /> 86 </td> 87 <th align="right">nested.intIndexed[0]</th> 88 <td align="left"> 89 <html:text property="nested.intIndexed[0]" size="32" /> 90 </td> 91 </tr> 92 <tr> 93 <th align="right">intIndexed[1]</th> 94 <td align="left"> 95 <html:text property="intIndexed[1]" size="32" /> 96 </td> 97 <th align="right">nested.intIndexed[1]</th> 98 <td align="left"> 99 <html:text property="nested.intIndexed[1]" size="32" /> 100 </td> 101 </tr> 102 <tr> 103 <th align="right">stringIndexed[0]</th> 104 <td align="left"> 105 <html:text property="stringIndexed[0]" size="32" /> 106 </td> 107 <th align="right">nested.stringIndexed[0]</th> 108 <td align="left"> 109 <html:text property="nested.stringIndexed[0]" size="32" /> 110 </td> 111 </tr> 112 <tr> 113 <th align="right">stringIndexed[1]</th> 114 <td align="left"> 115 <html:text property="stringIndexed[1]" size="32" /> 116 </td> 117 <th align="right">nested.stringIndexed[1]</th> 118 <td align="left"> 119 <html:text property="nested.stringIndexed[1]" size="32" /> 120 </td> 121 </tr> 122 <tr> 123 <td> </td> 124 <td align="right"> 125 <html:submit>Save</html:submit> 126 </td> 127 <td align="left"> 128 <html:reset>Reset</html:reset> 129 <html:cancel>Cancel</html:cancel> 130 </td> 131 <td> </td> 132 </tr> 133 </table> 134 </html:form> 135 </body> 136 </html:html> 137 138 |
对应的TestBean
java代码:  |
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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 23 package org.apache.struts.webapp.exercise; 24 25 26 import java.util.ArrayList; 27 import java.util.Collection; 28 import java.util.HashMap; 29 import java.util.List; 30 import java.util.Map; 31 import java.util.Vector; 32 import javax.servlet.http.HttpServletRequest; 33 import org.apache.struts.action.ActionForm; 34 import org.apache.struts.action.ActionMapping; 35 import 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  44 public class TestBean extends ActionForm {
...}
45 478 46 47 // ------------------------------------------------------------- Properties 48 49 50 /** 51 * A collection property where the elements of the collection are 52 * of type <code>LabelValueBean</code>. 53 */ 54 private Collection beanCollection = null; 55 56 public Collection getBeanCollection() {
...}
57 if (beanCollection == null) {
...}
58 Vector entries = new Vector(10); 73 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 } 74 return (beanCollection); 75 } 77 public void setBeanCollection(Collection beanCollection) {
...}
78 this.beanCollection = beanCollection; 80 79 } 81 82 /** 83 * A multiple-String SELECT element using a bean collection. 84 */ 85 private String[] beanCollectionSelect = { "Value 1", "Value 3", 86 "Value 5" }; 87 88 public String[] getBeanCollectionSelect() {
...}
89 return (this.beanCollectionSelect); 91 90 } 92 public void setBeanCollectionSelect(String beanCollectionSelect[]) {
...}
93 this.beanCollectionSelect = beanCollectionSelect; 95 94 } 96 97 /** 98 * A boolean property whose initial value is true. 99 */ 100 private boolean booleanProperty = true; 101 102 public boolean getBooleanProperty() {
...}
103 return (booleanProperty); 105 104 } 106 public void setBooleanProperty(boolean booleanProperty) {
...}
107 this.booleanProperty = booleanProperty; 109 108 } 110 111 /** 112 * A multiple-String SELECT element using a collection. 113 */ 114 private String[] collectionSelect = { "Value 2", "Value 4", 115 "Value 6" }; 116 117 public String[] getCollectionSelect() {
...}
118 return (this.collectionSelect); 120 119 } 121 public void setCollectionSelect(String collectionSelect[]) {
...}
122 this.collectionSelect = collectionSelect; 124 123 } 125 126 /** 127 * A double property. 128 */ 129 private double doubleProperty = 321.0; 130 131 public double getDoubleProperty() {
...}
132 return (this.doubleProperty); 134 133 } 135 public void setDoubleProperty(double doubleProperty) {
...}
136 this.doubleProperty = doubleProperty; 138 137 } 139 140 /** 141 * A boolean property whose initial value is false 142 */ 143 private boolean falseProperty = false; 144 145 public boolean getFalseProperty() {
...}
146 return (falseProperty); 148 147 } 149 public void setFalseProperty(boolean falseProperty) {
...}
150 this.falseProperty = falseProperty; 152 151 } 153 154 /** 155 * A float property. 156 */ 157 private float floatProperty = (float) 123.0; 158 159 public float getFloatProperty() {
...}
160 return (this.floatProperty); 162 161 } 163 public void setFloatProperty(float floatProperty) {
...}
164 this.floatProperty = floatProperty; 166 165 } 167 168 /** 169 * Integer arrays that are accessed as an array as well as indexed. 170 */ 171 private int intArray[] = { 0, 10, 20, 30, 40 }; 172 173 public int[] getIntArray() {
...}
174 return (this.intArray); 176 175 } 177 public void setIntArray(int intArray[]) {
...}
178 this.intArray = intArray; 180 179 } 181 private int intIndexed[] = { 0, 10, 20, 30, 40 }; 182 183 public int getIntIndexed(int index) {
...}
184 return (intIndexed[index]); 186 185 } 187 public void setIntIndexed(int index, int value) {
...}
188 intIndexed[index] = value; 190 189 } 191 192 private int intMultibox[] = new int[0]; 193 194 public int[] getIntMultibox() {
...}
195 return (this.intMultibox); 197 196 } 198 public void setIntMultibox(int intMultibox[]) {
...}
199 this.intMultibox = intMultibox; 201 200 } 202 /** 203 * An integer property. 204 */ 205 private int intProperty = 123; 206 207 public int getIntProperty() {
...}
208 return (this.intProperty); 210 209 } 211 public void setIntProperty(int intProperty) {
...}
212 this.intProperty = intProperty; 214 213 } 215 216 /** 217 * A long property. 218 */ 219 private long longProperty = 321; 220 221 public long getLongProperty() {
...}
222 return (this.longProperty); 224 223 } 225 public void setLongProperty(long longProperty) {
...}
226 this.longProperty = longProperty; 228 227 } 229 230 /** 231 * A multiple-String SELECT element. 232 */ 233 private String[] multipleSelect = { "Multiple 3", "Multiple 5", 234 "Multiple 7" }; 235 236 public String[] getMultipleSelect() {
...}
237 return (this.multipleSelect); 239 238 } 240 public void setMultipleSelect(String multipleSelect[]) {
...}
241 this.multipleSelect = multipleSelect; 243 242 } 244 245 /** 246 * A nested reference to another test bean (populated as needed). 247 */ 248 private TestBean nested = null; 249 250 public TestBean getNested() {
...}
251 if (nested == null) 255 252 nested = new TestBean(); 253 return (nested); 254 } 256 257 /** 258 * A String property with an initial value of null. 259 */ 260 private String nullProperty = null; 261 262 public String getNullProperty() {
...}
263 return (this.nullProperty); 265 264 } 266 public void setNullProperty(String nullProperty) {
...}
267 this.nullProperty = nullProperty; 269 268 } 270 271 /** 272 * A short property. 273 */ 274 private short shortProperty = (short) 987; 275 276 public short getShortProperty() {
...}
277 return (this.shortProperty); 279 278 } 280 public void setShortProperty(short shortProperty) {
...}
281 this.shortProperty = shortProperty; 283 282 } 284 285 /** 286 * A single-String value for a SELECT element. 287 */ 288 private String singleSelect = "Single 5"; 289 290 public String getSingleSelect() {
...}
291 return (this.singleSelect); 293 292 } 294 public void setSingleSelect(String singleSelect) {
...}
295 this.singleSelect = singleSelect; 297 296 } 298 299 /** 300 * String arrays that are accessed as an array as well as indexed. 301 */ 302 private String stringArray[] = 303 { "String 0", "String 1", "String 2", "String 3", "String 4" }; 304 305 public String[] getStringArray() {
...}
306 return (this.stringArray); 308 307 } 309 public void setStringArray(String stringArray[]) {
...}
310 this.stringArray = stringArray; 312 311 } 313 private String stringIndexed[] = 314 { "String 0", "String 1", "String 2", "String 3", "String 4" }; 315 316 public String getStringIndexed(int index) {
...}
317 return (stringIndexed[index]); 319 318 } 320 public void setStringIndexed(int index, String value) {
...}
321 stringIndexed[index] = value; 323 322 } 324 325 private String stringMultibox[] = new String[0]; 326 327 public String[] getStringMultibox() {
...}
328 return (this.stringMultibox); 330 329 } 331 public void setStringMultibox(String stringMultibox[]) {
...}
332 this.stringMultibox = stringMultibox; 334 333 } 335 /** 336 * A String property. 337 */ 338 private String stringProperty = "This is a string"; 339 340 public String getStringProperty() {
...}
341 return (this.stringProperty); 343 342 } 344 public void setStringProperty(String stringProperty) {
...}
345 this.stringProperty = stringProperty; 347 346 } 348 /** 349 * An empty String property. 350 */ 351 private String emptyStringProperty = ""; 352 353 public String getEmptyStringProperty() {
...}
354 return (this.emptyStringProperty); 356 355 } 357 public void setEmptyStringProperty(String emptyStringProperty) {
...}
358 this.emptyStringProperty = emptyStringProperty; 360 359 } 361 362 /** 363 * A single-String value for a SELECT element based on resource strings. 364 */ 365 private String resourcesSelect = "Resources 2"; 366 367 public String getResourcesSelect() {
...}
368 return (this.resourcesSelect); 370 369 } 371 public void setResourcesSelect(String resourcesSelect) {
...}
372 this.resourcesSelect = resourcesSelect; 374 373 } 375 376 /** 377 * A property that allows a null value but is still used in a SELECT. 378 */ 379 private String withNulls = null; 380 381 public String getWithNulls() {
...}
382 return (this.withNulls); 384 383 } 385 public void setWithNulls(String withNulls) {
...}
386 this.withNulls = withNulls; 388 387 } 389 390 /** 391 * A List property. 392 */ 393 private List listProperty = null; 394 395 public List getListProperty() {
...}
396 if (listProperty == null) {
...}
397 listProperty = new ArrayList(); 400 return listProperty; 398 listProperty.add("dummy"); 399 } 401 } 403 public void setListProperty(List listProperty) {
...}
404 this.listProperty = listProperty; 406 405 } 407 /** 408 * An empty List property. 409 */ 410 private List emptyListProperty = null; 411 412 public List getEmptyListProperty() {
...}
413 if (emptyListProperty == null) {
...}
414 emptyListProperty = new ArrayList(); 416 return emptyListProperty; 415 } 417 } 419 public void setEmptyListProperty(List emptyListProperty) {
...}
420 this.emptyListProperty = emptyListProperty; 422 421 } 423 424 /** 425 * A Map property. 426 */ 427 private Map mapProperty = null; 428 429 public Map getMapProperty() {
...}
430 if (mapProperty == null) {
...}
431 mapProperty = new HashMap(); 434 return mapProperty; 432 mapProperty.put("dummy", "dummy"); 433 } 435 } 437 public void setMapProperty(Map mapProperty) {
...}
438 this.mapProperty = mapProperty; 440 439 } 441 /** 442 * An empty Map property. 443 */ 444 private Map emptyMapProperty = null; 445 446 public Map getEmptyMapProperty() {
...}
447 if (emptyMapProperty == null) {
...}
448 emptyMapProperty = new HashMap(); 450 return emptyMapProperty; 449 } 451 } 453 public void setEmptyMapProperty(Map emptyMapProperty) {
...}
454 this.emptyMapProperty = emptyMapProperty; 456 455 } 457 458 // --------------------------------------------------------- Public Methods 459 460 461 /** 462 * Reset the properties that will be received as input. 463 */ 464 public void reset(ActionMapping mapping, HttpServletRequest request) {
...}
465 475 466 booleanProperty = false; 467 collectionSelect = new String[0]; 468 intMultibox = new int[0]; 469 multipleSelect = new String[0]; 470 stringMultibox = new String[0]; 471 if (nested != null) 472 nested.reset(mapping, request); 473 474 } 476 477 } |
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