Redirect Action in Struts 2

Create Maven Project

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

Add Tomcat Server

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

Add JRE System Library

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

Configure pom.xml

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>

Configure web.xml

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 Demo Action

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 id1;
	private String id2;

	public int getId1() {
		return id1;
	}

	public void setId1(int id1) {
		this.id1 = id1;
	}

	public String getId2() {
		return id2;
	}

	public void setId2(String id2) {
		this.id2 = id2;
	}

	@Action(value = "index", results = {
		@Result(name = SUCCESS, location = "/WEB-INF/views/demo/index.jsp")
	})
	public String index() {
		return SUCCESS;
	}

	@Action(value = "redirect1", results = {
		@Result(name = SUCCESS, type = "redirectAction", params = { "namespace", "/demo", "actionName", "success1" })
	})
	public String redirect1() {
		return SUCCESS;
	}

	@Action(value = "success1", results = {
		@Result(name = SUCCESS, location = "/WEB-INF/views/demo/success1.jsp")
	})
	public String success1() {
		return SUCCESS;
	}

	@Action(value = "redirect2", results = {
		@Result(name = SUCCESS, type = "redirectAction", params = { "namespace", "/demo", "actionName", "success2", "id1", "${id1}", "id2", "${id2}" })
	})
	public String redirect2() {
		return SUCCESS;
	}

	@Action(value = "success2", results = {
		@Result(name = SUCCESS, location = "/WEB-INF/views/demo/success2.jsp")
	})
	public String success2() {
		System.out.println("id1: " + this.id1);
		System.out.println("id2: " + this.id2);
		return SUCCESS;
	}

}

Create Views

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 views as below:

Index View

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"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Learn Struts 2 with Real Apps</title>
</head>
<body>

	<h3>Use Redirect Action</h3>
	<s:a namespace="/demo" action="redirect1">Redirect 1</s:a>

	<h3>Use Redirect Action with Parameters</h3>
	<s:url var="url_redirect2" namespace="/demo" action="redirect2">
		<s:param name="id1">123</s:param>
		<s:param name="id2">p02</s:param>
	</s:url>
	<s:a href="%{url_redirect2}">Redirect 2</s:a>

</body>
</html>

Success 1 View

In demo folder, create new JSP file named success1.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>

	<h3>Success 1</h3>

</body>
</html>

Success 2 View

In demo folder, create new JSP file named success2.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>

	<h3>Success 2</h3>
	id1: ${id1 }
	<br>
	id2: ${id2 }

</body>
</html>

Create Redirect Page

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>

Structure of Project

Run Application

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

Output

Click Redirect 1 link:

Output

Click Redirect 2 link:

Output