Struts 2 Push Tag Example

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In this article, we will learn how to use a push tag in struts2. Below is the syntax for the push tag.

<s:push value="someObject">
       <s:property value="obejctProperty" />
</s:push>

1. Development Environment 

  1. Eclipse
  2. JDK 1.8
  3. Tomcat 8.5
  4. Maven

2. Create a Maven Web Project

Below is my dynamic web project struts2-push-tag structure in eclipse. In this example, we are using struts 2.1.8 version.

This project has the following actions,

  • push-tag.action: In this action, we will see the values of the User object defined in Action class.

Code:

package com.simba.demo;

import com.opensymphony.xwork2.ActionSupport;

/**
 * @author Simba
 *
 */
public class PushTagExampleAction extends ActionSupport {

  private User user;

  public PushTagExampleAction() {
  }
 
  public String pushTagExample() {
    user=new User();
    user.setName("Daenerys");
    user.setAge(25);
    user.setGender("Female");
    user.setDescription("Daenerys of the House Targaryen, the First of Her Name, Breaker of Chains and Mother of Dragons.");
    return SUCCESS;
  }

  public User getUser() {
    return user;
  }

  public void setUser(User user) {
    this.user = user;
  }

  
}
package com.simba.demo;

/**
 * @author Simba
 *
 */
public class User {

  private String name;
  private String gender;
  private String description;
  private Integer age;

  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
  public String getGender() {
    return gender;
  }
  public void setGender(String gender) {
    this.gender = gender;
  }
  public String getDescription() {
    return description;
  }
  public void setDescription(String description) {
    this.description = description;
  }
  public Integer getAge() {
    return age;
  }
  public void setAge(Integer age) {
    this.age = age;
  }

}
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
  pageEncoding="ISO-8859-1"%>
<%@taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Push Tag Example</title>
</head>
<body>
  <h1>Push Tag Example</h1>
  <s:push value="user">
    <table>
      <tr>
        <td>Name :</td>
        <td><s:property value="name" /></td>
      </tr>
      <tr>
        <td>Gender :</td>
        <td><s:property value="gender" /></td>
      </tr>
      <tr>
        <td>Description :</td>
        <td><s:property value="description" /></td>
      </tr>
      <tr>
        <td>Age :</td>
        <td><s:property value="age" /></td>
      </tr>
    </table>
  </s:push>
</body>
</html>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"classpath://struts-2.0.dtd">

<struts>

  <package name="pushTag" namespace="/" extends="struts-default">
    <action name="push-tag" class="com.simba.demo.PushTagExampleAction" method="pushTagExample">
      <result>/WEB-INF/jsp/push-tag.jsp</result>
    </action>
  </package>

</struts>
<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>struts2-push-tag</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>
</web-app>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>struts2-push-tag</groupId>
  <artifactId>struts2-push-tag</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <build>
    <sourceDirectory>src</sourceDirectory>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.7.0</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>3.0.0</version>
        <configuration>
          <warSourceDirectory>WebContent</warSourceDirectory>
        </configuration>
      </plugin>
    </plugins>
  </build>
  	<dependencies>
    <dependency>
      <groupId>org.apache.struts</groupId>
      <artifactId>struts2-core</artifactId>
      <version>2.1.8</version>
    </dependency>
  </dependencies>
</project>

3. Testing

In your eclipse configure tomcat and run your application by selecting Run on server.