Struts2 控制 标签 之 Iterator Tag

Iterator Tag

 

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