Struts 2 Push Tag Example

In this tutorial, we will see the use of push tag of struts2 framework. The push tag push a value onto the to of stack. So it can access easily by using first-level of OGNL expression language.

Create action classes:
package com.dineshonjava.struts2.action;

import com.opensymphony.xwork2.ActionSupport;

/**
 * @author Dinesh Rajput
 *
 */
public class DataTagAction extends ActionSupport {

 private static final long serialVersionUID = -7744420104547018874L;
 
 
 public String execute() {
  return SUCCESS;
 }
  
}

Create Bean class:
UserBean.java
package com.dineshonjava.struts2.bean;

/**
 * @author Dinesh Rajput
 *
 */
public class UserBean {
 private String userName = "Dinesh Rajput";
 private String userAge = "27";
 private String userPhone = "9876543210";
 private String userAddress = "Noida";
 public String getUserName() {
  return userName;
 }
 public void setUserName(String userName) {
  this.userName = userName;
 }
 public String getUserAge() {
  return userAge;
 }
 public void setUserAge(String userAge) {
  this.userAge = userAge;
 }
 public String getUserPhone() {
  return userPhone;
 }
 public void setUserPhone(String userPhone) {
  this.userPhone = userPhone;
 }
 public String getUserAddress() {
  return userAddress;
 }
 public void setUserAddress(String userAddress) {
  this.userAddress = userAddress;
 }
 
}

Create views
Let us have success.jsp with the following content:
<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<STYLE type="text/css">

b{color: blue;}

</STYLE>
<title>Push Data Tag Struts2 | dineshonjava.com</title>
</head>
<body>
   <h1><span style="background-color: #FFFFcc">Property Data Tags Example!</span></h1>
  <hr/><b>Simple </b><br/><br/>
 <s:bean name="com.dineshonjava.struts2.bean.UserBean" var="userBean">
  Name : <s:property value="#userBean.userName"/><br/>
  Age : <s:property value="#userBean.userAge"/><br/>
  Phone : <s:property value="#userBean.userPhone"/><br/>
  Address : <s:property value="#userBean.userAddress"/>
 </s:bean>
 <hr/><b>Using push tag to display</b><br/><br/>
 <s:push value="#userBean">
  Name : <s:property value="userName"/><br/>
  Age : <s:property value="userAge"/><br/>
  Phone : <s:property value="userPhone"/><br/>
  Address : <s:property value="userAddress"/>
 </s:push>
</body>
</html>

Configuration Files
Your struts.xml should look like:
<?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.enable.DynamicMethodInvocation" value="false" />
    <constant name="struts.devMode" value="false" />
    <constant name="struts.custom.i18n.resources" value="myapp" />
 
 <package name="default" extends="struts-default" namespace="/">
        <action name="pushtag" class="com.dineshonjava.struts2.action.DataTagAction">
            <result name="success">/success.jsp</result>
        </action>
    </package>
 </struts>

Your web.xml should look like:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>Struts2DataTag</display-name>
 <filter>
        <filter-name>struts2</filter-name>
        <filter-class>
            org.apache.struts2.dispatcher.FilterDispatcher
        </filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

Right click on the project name and click Export > WAR File to create a War file. Then deploy this WAR in the Tomcat's webapps directory. Finally, start Tomcat server and try to access

URL http://localhost:8080/doj/pushtag.

This will give you following screen:



Download Source Code
PushDataTagExample.zip



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