struts2迭代器标签用来迭代一个值，它可以是任何 java.util.collection 或 java.util.iterator的值。在本教程中，您将创建一个列表变量，使用迭代器标签来遍历，并得到使用iteratorstatus迭代状态。
这里创建一个web工程：strut2iterator，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：
action类有列表属性，它包含多种美味 “kfc combo meals”.
iteratorkfcaction
package com.h3.common.action;
import java.util.arraylist;
import java.util.list;
import com.opensymphony.xwork2.actionsupport;
public class iteratorkfcaction extends actionsupport{
private list<string> combomeals;
public list<string> getcombomeals() {
return combomeals;
}
public void setcombomeals(list<string> combomeals) {
this.combomeals = combomeals;
}
public string execute() {
combomeals = new arraylist<string>();
combomeals.add("snack plate");
combomeals.add("dinner plate");
combomeals.add("colonel chicken rice combo");
combomeals.add("colonel burger");
combomeals.add("o.r. fillet burger");
combomeals.add("zinger burger");
return success;
}
}
下面的jsp页面使用iterator标签来遍历显示所有的“肯德基组合餐”名单。 在迭代器标签，它包含了一个“status”的属性，它用于在iteratorstatus类中声明名称。
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
</head>
<body>
<h1>struts2 <s:iterator>标签示例</h1>
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</div></div><h2>simple iterator</h2>
<ol>
<s:iterator value="combomeals">
<li><s:property /></li>
</s:iterator>
</ol>
<h2>iterator with iteratorstatus</h2>
<table>
<s:iterator value="combomeals" status="combomealsstatus">
<tr>
<s:if test="#combomealsstatus.even == true">
<td ><s:property/></td>
</s:if>
<s:elseif test="#combomealsstatus.first == true">
<td><s:property/> (this is first value) </td>
</s:elseif>
<s:else>
<td><s:property/></td>
</s:else>
</tr>
</s:iterator>
</table>
</body>
</html>
<?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="iteratorkfcaction" class="com.h3.common.action.iteratorkfcaction" > <result name="success">/pages/iterator.jsp</result> </action> </package> </struts>
http://localhost:8080/struts2iterator/iteratorkfcaction.action
