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Iterator Tag (Control Tags) Example

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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.

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:

     

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Posted on: July 17, 2007

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Comments:1
Mango
August 27, 2011
Retrieving from your iterator

It would be nice if you create form on your jsp page and then show how to retrieve the values in another action. What happens if the elements in the iterator are dynamic so that you do not know what the names are. How would you access these upon a form submit?
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