Struts2 <s:optiontransferselect>示例
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2023-03-14
在Struts2中,选项选择组件是两个“updownselect”选择部件在左,右侧对齐,在它们中间,包含按钮来移动自己的选择选项。通过<s:optiontransferselect>标签这可以创建。
这里创建一个Web工程:strut2updownselect,来演示在多个复选框如何设置的默认值,整个项目的结构如下图所示:
<s:optiontransferselect label="Lucky Numbers" name="leftNumber" list="{'1 - One ', '2 - Two', '3 - Three', '4 - Four', '5 - Five'}" doubleName="rightNumber" doubleList="{'10 - Ten','20 - Twenty','30 - Thirty','40 - Forty','50 - Fifty'}" />
“name”和“list”是指向左选择组件;而“doubleName”和“doubleList”是指在正确的选择组。
产生下面的HTML,两个“updownselect”组件,按钮和JavaScript来自己动(默认的XHTML主题)之间的选择选项。
<tr> <td class="tdLabel"> <label for="resultAction_leftNumber" class="label">Lucky Numbers:</label> </td> <td> <script type="text/javascript" src="/Struts2Example/struts/optiontransferselect.js"> </script> <table border="0"> <tr> <td> <select name="leftNumber" size="15" id="resultAction_leftNumber" multiple="multiple"> <option value="1 - One ">1 - One </option> <option value="2 - Two">2 - Two</option> <option value="3 - Three">3 - Three</option> <option value="4 - Four">4 - Four</option> <option value="5 - Five">5 - Five</option> </select> <input type="hidden" id="__multiselect_resultAction_leftNumber" name="__multiselect_leftNumber" value="" /> <input type="button" onclick="moveOptionDown( document.getElementById('resultAction_leftNumber'), 'key', '');" value="v" /> <input type="button" onclick="moveOptionUp( document.getElementById('resultAction_leftNumber'), 'key', '');" value="^" /> </td> <td valign="middle" align="center"> <input type="button" value="<-" onclick="moveSelectedOptions( document.getElementById('resultAction_rightNumber'), document.getElementById('resultAction_leftNumber'), false, '');" /> <input type="button" value="->" onclick="moveSelectedOptions( document.getElementById('resultAction_leftNumber'), document.getElementById('resultAction_rightNumber'), false, '');" /> <input type="button" value="<<--" onclick="moveAllOptions( document.getElementById('resultAction_rightNumber'), document.getElementById('resultAction_leftNumber'), false, '');" /> <input type="button" value="-->>" onclick="moveAllOptions( document.getElementById('resultAction_leftNumber'), document.getElementById('resultAction_rightNumber'), false, '');" /> <input type="button" value="<*>" onclick="selectAllOptions( document.getElementById('resultAction_leftNumber')); selectAllOptions(document.getElementById('resultAction_rightNumber'));" /> </td> <td> <select name="rightNumber" size="15" multiple="multiple" id="resultAction_rightNumber" > <option value="10 - Ten">10 - Ten</option> <option value="20 - Twenty">20 - Twenty</option> <option value="30 - Thirty">30 - Thirty</option> <option value="40 - Forty">40 - Forty</option> <option value="50 - Fifty">50 - Fifty</option> </select> <input type="hidden" id="__multiselect_resultAction_rightNumber" name="__multiselect_rightNumber" value="" /> <input type="button" onclick="moveOptionDown( document.getElementById('resultAction_rightNumber'), 'key', '');" value="v" /> <input type="button" onclick="moveOptionUp( document.getElementById('resultAction_rightNumber'), 'key', '');" value="^" /> </td> </tr> </table> <script type="text/javascript"> var containingForm = document.getElementById("resultAction"); StrutsUtils.addEventListener(containingForm, "submit", function(evt) { var selectObj = document.getElementById("resultAction_leftNumber"); selectAllOptionsExceptSome(selectObj, "key", ""); }, true); var containingForm = document.getElementById("resultAction"); StrutsUtils.addEventListener(containingForm, "submit", function(evt) { var selectObj = document.getElementById("resultAction_rightNumber"); selectAllOptionsExceptSome(selectObj, "key", ""); }, true); </script>
Struts2 <s:optiontransferselect> 示例
一个完整的全面的 <s:optiontransferselect> 标签例子,表明使用OGNL和Java列出来填充数据到“选项中选择转移”的组件。
1. 动作类
Action类来生成并存储左右选择选项。
OptionTransferSelectAction.java
package com.yiibai.common.action; import java.util.ArrayList; import java.util.List; import com.opensymphony.xwork2.ActionSupport; public class OptionTransferSelectAction extends ActionSupport{ private List<String> leftAntivirusList = new ArrayList<String>(); private List<String> rightAntivirusList = new ArrayList<String>(); private String leftAntivirus; private String rightAntivirus; private String leftNumber; private String rightNumber; public OptionTransferSelectAction(){ leftAntivirusList.add("Norton 360 Version 4.0"); leftAntivirusList.add("McAfee Total Protection 2010"); leftAntivirusList.add("Trend Micro IS Pro 2010"); leftAntivirusList.add("BitDefender Total Security 2010"); rightAntivirusList.add("Norton Internet Security 2010"); rightAntivirusList.add("Kaspersky Internet Security 2010"); rightAntivirusList.add("McAfee Internet Security 2010"); rightAntivirusList.add("AVG Internet Security 2010"); rightAntivirusList.add("Trend Micro Internet Security 2010"); rightAntivirusList.add("F-Secure Internet Security 2010"); } public String getLeftNumber() { return leftNumber; } public void setLeftNumber(String leftNumber) { this.leftNumber = leftNumber; } public String getRightNumber() { return rightNumber; } public void setRightNumber(String rightNumber) { this.rightNumber = rightNumber; } public List<String> getLeftAntivirusList() { return leftAntivirusList; } public void setLeftAntivirusList(List<String> leftAntivirusList) { this.leftAntivirusList = leftAntivirusList; } public List<String> getRightAntivirusList() { return rightAntivirusList; } public void setRightAntivirusList(List<String> rightAntivirusList) { this.rightAntivirusList = rightAntivirusList; } public String getLeftAntivirus() { return leftAntivirus; } public void setLeftAntivirus(String leftAntivirus) { this.leftAntivirus = leftAntivirus; } public String getRightAntivirus() { return rightAntivirus; } public void setRightAntivirus(String rightAntivirus) { this.rightAntivirus = rightAntivirus; } public String execute() throws Exception{ return SUCCESS; } public String display() { return NONE; } }
2. 结果页面
通过“<s:optiontransferselect>”选项转移选择组件标签渲染,并通过Java和OGNL列表产生左侧和右侧选择选项。
optiontransferselect.jsp
<%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <s:head /> </head> <body> <h1>Struts 2 optiontransferselect 示例</h1> <s:form action="resultAction" namespace="/" method="POST" > <s:optiontransferselect label="Lucky Numbers" name="leftNumber" list="{'1 - One ', '2 - Two', '3 - Three', '4 - Four', '5 - Five'}" doubleName="rightNumber" doubleList="{'10 - Ten','20 - Twenty','30 - Thirty','40 - Forty','50 - Fifty'}" /> <s:optiontransferselect label="Favourite Antivirus" name="leftAntivirus" leftTitle="Left Antivirus Title" rightTitle="Right Antivirus Title" list="leftAntivirusList" multiple="true" headerKey="-1" headerValue="--- Please Select ---" doubleList="rightAntivirusList" doubleName="rightAntivirus" doubleHeaderKey="-1" doubleHeaderValue="--- Please Select ---" /> <s:submit value="submit" name="submit" /> </s:form> </body> </html>
result.jsp
<%@ taglib prefix="s" uri="/struts-tags" %> <html> <body> <h1>Struts 2 optiontransferselect example</h1> <h2> Left AntiVirus : <s:property value="leftAntivirus"/> </h2> <h2> Right AntiVirus : <s:property value="rightAntivirus"/> </h2> <h2> Left Numbers : <s:property value="leftNumber"/> </h2> <h2> Right Numbers : <s:property value="rightNumber"/> </h2> </body> </html>
3. struts.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <constant name="struts.devMode" value="true" /> <package name="default" namespace="/" extends="struts-default"> <action name="optionTransferSelectAction" class="com.yiibai.common.action.OptionTransferSelectAction" method="display"> <result name="none">/pages/optiontransferselect.jsp</result> </action> <action name="resultAction" class="com.yiibai.common.action.OptionTransferSelectAction" > <result name="success">/pages/result.jsp</result> </action> </package> </struts>
4. 实例
http://localhost:8080/struts2optiontransferselect/optionTransferSelectAction.action
参考
- Struts 2 updownselect 文档
- Struts 2 updownselect 示例
- Struts 2 doubleselect 示例
代码下载: http://pan.baidu.com/s/1qW5p8lu