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
- Eclipse
- JDK 1.8
- Tomcat 8.5
- 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.
