jsp struts1 標(biāo)簽實(shí)例詳解第1/2頁(yè)

package com.tarena.struts.tag.form;

import org.apache.struts.action.*;
import javax.servlet.http.*;
import java.util.*;

public class TagForm extends ActionForm
{
private int id;
private String userName;
private String password;
private int sex;
private String[] hobbies;
private String from;
private String introduction;
private Collection provinces;
private boolean checkbox1;
private boolean checkbox2;

public TagForm()
{
sex = 1;
provinces = new ArrayList();
provinces.add(new OptionBean("beijing", "100000"));
provinces.add(new OptionBean("hebei", "110000"));
provinces.add(new OptionBean("tianjin", "120000"));
}

public String getFrom()
{
return from;
}

public void setFrom(String from)
{
this.from = from;
}

public String[] getHobbies()
{
return hobbies;
}

public void setHobbies(String[] hobbies)
{
this.hobbies = hobbies;
}

public int getId()
{
return id;
}

public void setId(int id)
{
this.id = id;
}

public String getIntroduction()
{
return introduction;
}

public void setIntroduction(String introduction)
{
this.introduction = introduction;
}

public String getPassword()
{
return password;
}

public void setPassword(String password)
{
this.password = password;
}

public int getSex()
{
return sex;
}

public void setSex(int sex)
{
this.sex = sex;
}

public String getUserName()
{
return userName;
}

public void setUserName(String userName)
{
this.userName = userName;
}

public Collection getProvinces()
{
return provinces;
}

public void reset(ActionMapping mapping, javax.servlet.http.HttpServletRequest request)
{
//checkbox1 = false;
//hobbies = null;
}

public boolean isCheckbox1() {
return checkbox1;
}

public void setCheckbox1(boolean checkbox1) {
this.checkbox1 = checkbox1;
}

public boolean isCheckbox2() {
return checkbox2;
}

public void setCheckbox2(boolean checkbox2) {
this.checkbox2 = checkbox2;
}

public void setProvinces(Collection provinces) {
this.provinces = provinces;
}
}

%@ page language="java" contentType="text/html;charset=utf-8"%>
%@ taglib uri="/WEB-INF/resource/struts-logic.tld" prefix="logic"%>
%@ taglib uri="/WEB-INF/resource/struts-bean.tld" prefix="bean"%>
%@ taglib uri="/WEB-INF/resource/struts-html.tld" prefix="html"%>
%@ taglib uri="/WEB-INF/resource/struts-tiles.tld" prefix="tiles"%>
%@ taglib uri="/WEB-INF/resource/struts-nested.tld" prefix="nested"%>
%@ taglib uri="/WEB-INF/resource/c.tld" prefix="c"%>
%@ taglib uri="/WEB-INF/resource/app.tld" prefix="app"%>
%@ taglib uri="/WEB-INF/resource/fmt.tld" prefix="fmt"%>

!-- 需要在struts-config.xml中action的path為"/tag"的name屬性中指定一個(gè)form bean -->
html:form action="/tag">
html:hidden property="id" />
userName:html:text property="userName" />
password:html:password property="password" />br>
!--
在checkbox后面添加一個(gè)和checkbox的屬性同名并且value為“false”的隱藏輸入框，強(qiáng)迫Struts去重新設(shè)置checkbox的屬性值
一般情況下，在ActionForm中都使用布爾型變量來(lái)表示一個(gè)checkbox，這是因?yàn)樗礇](méi)被選中，要么就是被選中。

multibox標(biāo)簽生成網(wǎng)頁(yè)上的復(fù)選框，其實(shí)它的功能和checkbox一樣。
所不同的是，在此復(fù)選框所在的ActionForm中使用一個(gè)數(shù)組來(lái)表示該復(fù)選框。
所以，一般情況下，推薦使用multibox。
private boolean checkbox1;
private String[] hobbies;
-->
checkbox1:html:checkbox property="checkbox1" />
input type="hidden" name="checkbox1" value="false">
checkbox2:html:checkbox property="checkbox2" />
input type="hidden" name="checkbox2" value="false">br>

hobbies:swimhtml:multibox property="hobbies" value="1" />
readinghtml:multibox property="hobbies" value="2" />
walkinghtml:multibox property="hobbies" value="3" />br>

!-- 從form傳來(lái)的radio若已經(jīng)setter賦值了，則在頁(yè)面上value值與之相等的就會(huì)被勾選 -->
gender:malehtml:radio property="sex" value="1" />
femalehtml:radio property="sex" value="2" />br>

!-- provinces在form bean中定義及賦值如下:
private Collection provinces;

provinces = new ArrayList();
provinces.add(new OptionBean("beijing", "100000"));
provinces.add(new OptionBean("hebei", "110000"));
provinces.add(new OptionBean("tianjin", "120000"));
-->
html:select property="from">
html:optionsCollection property="provinces"/>
/html:select>

!--
size為1，則只同時(shí)顯示一個(gè)選項(xiàng)。
還有一個(gè)multiple屬性，當(dāng)其為true時(shí)，該選擇列表就允許多選。用戶可以通過(guò)鼠標(biāo)的拖動(dòng)，或是按住Ctrl鍵進(jìn)行多選。
當(dāng)multiple屬性為true時(shí)，在ActionForm中對(duì)應(yīng)的屬性應(yīng)是一個(gè)數(shù)組類(lèi)型以便同時(shí)向其賦上用戶選中的多個(gè)值。
-->
html:select property="from" size="3" multiple="true">
html:option value="value1">Show Value1/html:option>
html:option value="value2">Show Value2/html:option>
html:option value="value3">Show Value3/html:option>
/html:select>br>

html:textarea rows="5" cols="30" property="introduction">/html:textarea>br>
input type="submit" value="register" >
br>br>

/html:form>