Pass Data from Action to View in Struts 2

On the Eclipse, create a Maven project

Click Next button and select Workspace location for project

Click Next button and select maven-archetype-webapp

Click Next button and enter Project Information:

GroupId: LearnStrutsFrameworkWithRealApps
Artifact Id: LearnStrutsFrameworkWithRealApps
Package: com.demo

Click Finish button to finish create Maven project

Select current project, Right click and select Properties menu. In Properties dialog, select Targeted Runtime in left side after select Tomcat server from server list in right side

Click Ok button to finish

Select current project, Right click and select Build Path\Configure Build Path menu Select JRE System Library in Libraries tab:

Click Edit button and select JRE System Library you need use as below:

Click Finish button to finish

Open pom.xml file and add configurations for Struts 2 as below:

<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/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>LearnStrutsFrameworkWithRealApps</groupId>
	<artifactId>LearnStrutsFrameworkWithRealApps</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>LearnStrutsFrameworkWithRealApps Maven Webapp</name>
	<url>http://maven.apache.org</url>
	<dependencies>

		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>javax.servlet.jsp.jstl</groupId>
			<artifactId>javax.servlet.jsp.jstl-api</artifactId>
			<version>1.2.1</version>
		</dependency>

		<dependency>
			<groupId>taglibs</groupId>
			<artifactId>standard</artifactId>
			<version>1.1.2</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
			<scope>provided</scope>
		</dependency>

		<!-- Struts 2 Framework -->

		<dependency>
			<groupId>org.apache.struts</groupId>
			<artifactId>struts2-core</artifactId>
			<version>2.5.20</version>
		</dependency>

		<dependency>
			<groupId>org.apache.struts</groupId>
			<artifactId>struts2-convention-plugin</artifactId>
			<version>2.5.20</version>
		</dependency>

	</dependencies>

	<build>
		<finalName>LearnStrutsFrameworkWithRealApps</finalName>
	</build>

</project>

Open web.xml file in src\main\webapp\WEB-INF folder and add configurations for Struts 2 as below:

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
		 http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
	version="3.1">

	<display-name>Learn Struts 2 Framework with Real Apps</display-name>

	<filter>
		<filter-name>struts2</filter-name>
		<filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
		<init-param>
			<param-name>struts.devMode</param-name>
			<param-value>true</param-value>
		</init-param>
		<init-param>
			<param-name>struts.action.extension</param-name>
			<param-value>html</param-value>
		</init-param>
	</filter>

	<filter-mapping>
		<filter-name>struts2</filter-name>
		<url-pattern>/*</url-pattern>
		<dispatcher>REQUEST</dispatcher>
		<dispatcher>FORWARD</dispatcher>
		<dispatcher>INCLUDE</dispatcher>
	</filter-mapping>

	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>

</web-app>

Create new package named controllers.action in src/main/java folder. The action class in Struts 2 must be put in a package named action. In this package, create new java class named DemoAction.java as below:

package controllers.action;

import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.Result;

import com.opensymphony.xwork2.ActionSupport;

@Namespace("/demo")
public class DemoAction extends ActionSupport {

	private static final long serialVersionUID = 1L;

	private int age;
	private String username;
	private double price;
	private boolean status;

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public double getPrice() {
		return price;
	}

	public void setPrice(double price) {
		this.price = price;
	}

	public boolean isStatus() {
		return status;
	}

	public void setStatus(boolean status) {
		this.status = status;
	}

	@Action(value = "index", results = {
		@Result(name = SUCCESS, location = "/WEB-INF/views/demo/index.jsp")
	})
	public String index() {
		this.age = 20;
		this.username = "abc";
		this.price = 4.5;
		this.status = true;
		return SUCCESS;
	}

}

Create new folder named views in src\main\webapp\WEB-INF folder. In views folder, create new folder named demo. In demo folder create new JSP file named index.jsp as below:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
	pageEncoding="ISO-8859-1" isELIgnored="false"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Learn Struts 2 with Real Apps</title>
</head>
<body>

	Age: ${age }
	<br>
	Username: ${username }
	<br>
	Price: ${price }
	<br>
	Status: ${status }

</body>
</html>

Create new jsp file named index.jsp in src\main\webapp folder as below:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<jsp:forward page="demo/index.html"></jsp:forward>

Select project, right click and select Run on Server menu

Access index method in demo action with following url:

http://localhost:8080/LearnStrutsFrameworkWithRealApps/demo/index.html

Create Maven Project

Add Tomcat Server

Add JRE System Library

Configure pom.xml

Configure web.xml

Create Demo Action

Create View

Create Redirect Page

Structure of Project

Run Application

Output