Struts 2 Iterator tag example

Download It – Struts2-Iterator-tag-Example.zip

Struts 2 Iterator tag is used to iterate over a value, which can be any of java.util.Collection or java.util.Iterator. In this tutorials, you will create a list variable, use Iterator tag to loop over it and get the iterator status with IteratorStatus.

1. Action

An Action class with a List property , which contains variety of delicious “KFC combo meals”.

IteratorKFCAction

package com.mkyong.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;
	}
}

2. Iterator example

A JSP page to show the use of Iterator tag to loop over the “KFC comboMeals” List. In Iterator tag, it contains a “status” attribute, which is used to declared a name for IteratorStatus class.

The IteratorStatus class is used to get information about the status of the iteration. Supported properties are index, count, first, last, odd, even and etc..Make sure you visit this IteratorStatus documentation to know more details of it.

<%@ taglib prefix="s" uri="/struts-tags" %>
 
<html>
<head>
</head>
 
<body>
<h1>Struts 2 Iterator tag example</h1>
 
<h3>Simple Iterator</h3>
<ol>
<s:iterator value="comboMeals">
  <li><s:property /></li>
</s:iterator>
</ol>
 
<h3>Iterator with IteratorStatus</h3>
<table>
<s:iterator value="comboMeals" status="comboMealsStatus">
  <tr>
  	<s:if test="#comboMealsStatus.even == true">
      <td style="background: #CCCCCC"><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>

3. struts.xml

Link it ~

<?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.mkyong.common.action.IteratorKFCAction" >
			<result name="success">pages/iterator.jsp</result>
		</action>
 
	</package>
 
</struts>

4. Demo

http://localhost:8080/Struts2Example/iteratorKFCAction.action

Reference

Tags : iterator struts2

mkyong

Founder of Mkyong.com, love Java and open source stuffs. Follow him on Twitter, or befriend him on Facebook or Google Plus.

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<s:form action="iteratorKFCAction" > <h1>Struts 2 Iterator tag example</h1> <h3>Simple Iterator</h3> <ol> <s:iterator value="comboMeals"> <li><s:property /></li> </s:iterator> </ol> <h3>Iterator with IteratorStatus</h3> <table> <s:iterator value="comboMeals" status="comboMealsStatus"> <tr> <s:if test="#comboMealsStatus.even == true"> <td style="background: #CCCCCC"><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> </s:form>

<s:iterator value="hotelfound" var="hot"> <tr> <td> <s:property value="%{hot.hoName}"/></td> </tr> </s:iterator>

public class Hotels { private String hotel_id; private String hoName; private String hoDEscrip; private HotelAdress ho_ddress; private Integer tel1; private Integer tel2; private String imgs; private String login; private String password; public String getLogin() { return login; } public void setLogin(String login) { this.login = login; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getHoName() { return hoName; } public void setHoName(String hoName) { this.hoName = hoName; } public String getHoDEscrip() { return hoDEscrip; } public void setHoDEscrip(String hoDEscrip) { this.hoDEscrip = hoDEscrip; } public void setHo_ddress(HotelAdress ho_ddress) { this.ho_ddress = ho_ddress; } public HotelAdress getHo_ddress() { return ho_ddress; } public void setTel1(Integer tel1) { this.tel1 = tel1; } public Integer getTel1() { return tel1; } public void setTel2(Integer tel2) { this.tel2 = tel2; } public Integer getTel2() { return tel2; } public void setImgs(String imgs) { this.imgs = imgs; } public String getImgs() { return imgs; } public void setHotel_id(String hotel_id) { this.hotel_id = hotel_id; } public String getHotel_id() { return hotel_id; } }

nathan March 26, 2013 at 10:31 pm

Hello Mkyong,

In the iterator.jsp page you did not add the struts form tag. that’s why the output not coming. please add this tag to the iterator.jsp page

the below is the correct version

 
&lt;s:form action=&quot;iteratorKFCAction&quot; &gt; 
&lt;h1&gt;Struts 2 Iterator tag example&lt;/h1&gt;
 
&lt;h3&gt;Simple Iterator&lt;/h3&gt;
&lt;ol&gt;
&lt;s:iterator value=&quot;comboMeals&quot;&gt;
  &lt;li&gt;&lt;s:property /&gt;&lt;/li&gt;
&lt;/s:iterator&gt;
&lt;/ol&gt;
 
&lt;h3&gt;Iterator with IteratorStatus&lt;/h3&gt;
&lt;table&gt;
&lt;s:iterator value=&quot;comboMeals&quot; status=&quot;comboMealsStatus&quot;&gt;
  &lt;tr&gt;
  	&lt;s:if test=&quot;#comboMealsStatus.even == true&quot;&gt;
      &lt;td style=&quot;background: #CCCCCC&quot;&gt;&lt;s:property/&gt;&lt;/td&gt;
    &lt;/s:if&gt;
    &lt;s:elseif test=&quot;#comboMealsStatus.first == true&quot;&gt;
      &lt;td&gt;&lt;s:property/&gt; (This is first value) &lt;/td&gt;
    &lt;/s:elseif&gt;
    &lt;s:else&gt;
      &lt;td&gt;&lt;s:property/&gt;&lt;/td&gt;
    &lt;/s:else&gt;
  &lt;/tr&gt;
&lt;/s:iterator&gt;
&lt;/table&gt;
&lt;/s:form&gt;

now anyone can get the output, its working fine

nathan March 5, 2013 at 7:09 pm
Struts 2 Iterator tag example
Simple Iterator
Iterator with IteratorStatus
Hello sir, I could not get the output, what is the problem
nathan March 5, 2013 at 7:08 pm
hello MkYong
I go the below output only, What is the problem, why data not coming?
Struts 2 Iterator tag example
Simple Iterator
Iterator with IteratorStatus

mahmoud February 5, 2013 at 5:36 am

hi, i m traying to iterat a lsit of object in my jsp i use this

&lt;s:iterator value=&quot;hotelfound&quot; var=&quot;hot&quot;&gt;
                                &lt;tr&gt;
                                &lt;td&gt; &lt;s:property value=&quot;%{hot.hoName}&quot;/&gt;&lt;/td&gt;
 
                                &lt;/tr&gt;
     &lt;/s:iterator&gt;

my model object contain other object

and i get the list from MYSQL databases via an action strust2 and hibernate , spring
but it doesn’t work any help

Joseph Kingston Leo May 12, 2012 at 6:31 pm
Thank you it was very useful…………… Joseph (SCJP6)
Ravi Saini May 5, 2012 at 8:41 pm
Dear sir
i am using struts2 and i have a problem regarding to struts2
problem:-I got data from mysql database to html table using iterator tag
its working good for once.if i execute same action class again then repeated
data add in same table.plz give me solution
Jeetendra biswas April 18, 2012 at 7:51 pm
comboMeals.size();
Jeetendra biswas April 18, 2012 at 7:51 pm
this is not working. what is this non sense thing is that those are not working….. this is bullshit!!
- gd April 27, 2012 at 5:17 pm
  Nonsense this is Working!..
skl February 9, 2012 at 8:46 am
I just get the below output..
Struts 2 Iterator tag example
Simple Iterator
Iterator with IteratorStatus
I am not getting any data ?? do you what the issue…
I just copy pasted the above example
Arun December 20, 2011 at 7:29 pm
hi mkyong !!
useful article..do u have any struts 1.2 jsp iterator tag example..as i m a beginner,i m little bit struggling in this combination ..thanks
Arun.
- gd April 27, 2012 at 5:16 pm
  shutup !..
Oscar April 29, 2011 at 8:47 pm
Very useful tuts!
But i would need the same from an javabean’s attribute (as list of course) implemeting the modeldriven?
Thks

Struts 2 Iterator tag example

1. Action

2. Iterator example

3. struts.xml

4. Demo

Reference

Popular Posts

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1. Action

2. Iterator example

3. struts.xml

4. Demo

Reference

Related Posts

Popular Posts

What is your opinion?

Do you know the answer?