Iterator Tag (Control Tags) Example
In this section, we are going to describe the Iterator tag. Iterator tag is used to iterate over a value. An iterable value
can be either of: java.util.Collection, java.util.Iterator.
Add the following code snippet into the struts.xml file.
struts.xml
<action name="iteratorTag" class="net.roseindia.iteratorTag">
<result>/pages/genericTags/iteratorTag.jsp</result>
</action> |
Create an action class as shown:
iteratorTag.java
package net.roseindia;
import com.opensymphony.xwork2.ActionSupport;
import java.util.*;
public class iteratorTag extends ActionSupport{
private List myList;
public String execute()throws Exception{
myList = new ArrayList();
myList.add("Fruits");
myList.add("Apple");
myList.add("Mango");
myList.add("Orange");
myList.add("Pine Apple");
return SUCCESS;
}
public List getMyList(){
return myList;
}
}
|
The following example retrieves the value of the
getMyList() method of the current object on the value stack and
uses it to iterate over. The <s:property/> tag prints out the
current value of the iterator.
iteratorTag.jsp
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Iterator Tag Example!</title>
</head>
<body>
<h1><span style="background-color: #FFFFcc">Iterator Tag Example!</span></h1>
<s:iterator value="myList">
<s:property /><br>
</s:iterator>
</body>
</html>
|
Output of An Iterator Tag Example:
|
Del.icio.us
Digg
Google
Spurl
Blink
Furl
Simpy
Y! MyWeb
Current Comments
5 comments so far (post your own) View All Comments Latest 10 Comments:Hi I am trying to display a ArrayList of lists using struts2 iterator tag.
private void dataReady(){
for (int itr = 0; itr < 12; itr++)
{
tempList = new ArrayList();
for(int tillItr = 0; tillItr < this.terminalList.size(); tillItr++)
{
tempList.add(this.transactions[itr][tillItr]);
tempList.add(this.unitsSold[itr][tillItr]);
}
tempList.add(this.peakBlocks[itr]);
tempList.add(this.incCtr[itr]);
tempList.add(this.percentages[itr]);
this.dataList.add(tempList);
}
}
Now I have tempList which is a list of int and long values and dataList which is a list of tempLists.
I need to use the struts2 iterator tag and display it on the screen.
Is there any way of doing it?
If Iterator is not possible then is there anything else I can use?
Posted by Amol on Wednesday, 09.10.08 @ 20:22pm | #78542
Hi,
I am trying to iterarte a session variable of type HashMap<String, List> using the following code, but it's not producing any markup..
<s:iterator value="#session.physicalArchives" id="physicalArchives">
<s:property value="key" />
<s:property value="value"/>
</s:iterator>
Posted by Rushikesh on Monday, 02.11.08 @ 17:53pm | #47908
How can I edit the elements in the collection. Is there a way to create textfields for every fruit on one page and allow editing their names?
Posted by Piotr Falenczyk on Thursday, 02.7.08 @ 18:38pm | #47524
How to iterate among nested arraylist collection..?
Posted by Sawan on Tuesday, 07.31.07 @ 09:54am | #22274
How to pass any list object back to action class?
Suppose list containes a set of user object. And in my action class I want all the user object in the list.
Posted by Arpan on Friday, 07.27.07 @ 15:07pm | #22045