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Struts Hello World Example in Eclipse 06.13.2012 · File Source : http://www./tutorials/java/struts/struts-tutorial/struts-tutorial-using-eclipse-1.html In this tutorial you will learn how to create a Struts hello world application in eclipse. First create a new project, go to File->New and select DynamicWebProject. Enter the project name and click the Finish button.  Add the following jar files to the
WEB-INF\lib directory.
 Right click the src folder and
select New->Package.  Enter the package name as com.vaannila.form and click Finish. Now right click the newly created
package and select New->Class.  Enter the class name as HelloWorldForm and the superclass name asorg.apache.struts.action.ActionForm and click Finish.  In the HelloWorldForm class add the
following code. 01.package com.vaannila.form; 02. 03.import org.apache.struts.action.ActionForm; 04. 05.public class HelloWorldForm extends ActionForm { 06. 07.private static final long serialVersionUID = -473562596852452021L; 08. 09.private String message; 10. 11.public String getMessage() { 12.return message; 13.} 14. 15.public void setMessage(String message) { 16.this.message = message; 17.} 18.} In the same way create a new
package com.vaannila.action and create a HelloWorldAction class extending org.apache.struts.action.Action. Add the following code to the
action class and save it.
01.package com.vaannila.action; 02. 03.import javax.servlet.http.HttpServletRequest; 04.import javax.servlet.http.HttpServletResponse; 05. 06.import org.apache.struts.action.Action; 07.import org.apache.struts.action.ActionForm; 08.import org.apache.struts.action.ActionForward; 09.import org.apache.struts.action.ActionMapping; 10. 11.import com.vaannila.form.HelloWorldForm; 12. 13.public class HelloWorldAction extends Action { 14. 15.@Override 16.public ActionForward execute(ActionMapping mapping, ActionForm
form, HttpServletRequest request, HttpServletResponse response) throwsException { 17.HelloWorldForm hwForm = (HelloWorldForm) form; 18.hwForm.setMessage("Hello World"); 19.return mapping.findForward("success"); 20.} 21.} Here we typecast the ActionForm to HelloWorldForm and set the message value. Add the following entries in the struts-config.xml file.
01.<?xml version="1.0" encoding="ISO-8859-1" ?> 02. 03.<!DOCTYPE struts-config PUBLIC 04."-//Apache Software Foundation//DTD Struts
Configuration 1.3//EN" 05."http://struts./dtds/struts-config_1_3.dtd"> 06. 07.<struts-config> 08. 09.<form-beans> 10.<form-bean name="helloWorldForm"type="com.vaannila.form.HelloWorldForm"/> 11.</form-beans> 12. 13.<global-forwards> 14.<forward name="helloWorld" path="/helloWorld.do"/> 15.</global-forwards> 16. 17.<action-mappings> 18.<action path="/helloWorld"type="com.vaannila.action.HelloWorldAction" name="helloWorldForm"> 19.<forward name="success" path="/helloWorld.jsp" /> 20.</action> 21.</action-mappings> 22. 23.</struts-config> Now configure the deployment
descriptor. Add the following configuration information in the web.xml file.
01.<?xml version="1.0" encoding="UTF-8"?> 02.<web-app xmlns:xsi="http://www./2001/XMLSchema-instance"xmlns="http://java./xml/ns/javaee"xmlns:web="http://java./xml/ns/javaee/web-app_2_5.xsd"xsi:schemaLocation="http://java./xml/ns/javaeehttp://java./xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID"version="2.5"> 03.<display-name>StrutsExample1</display-name> 04. 05.<servlet> 06.<servlet-name>action</servlet-name> 07.<servlet-class>org.apache.struts.action.ActionServlet</servlet-class> 08.<init-param> 09.<param-name>config</param-name> 10.<param-value>/WEB-INF/struts-config.xml</param-value> 11.</init-param> 12.<load-on-startup>2</load-on-startup> 13.</servlet> 14. 15.<servlet-mapping> 16.<servlet-name>action</servlet-name> 17.<url-pattern>*.do</url-pattern> 18.</servlet-mapping> 19. 20.<welcome-file-list> 21.<welcome-file>index.jsp</welcome-file> 22.</welcome-file-list> 23.</web-app> When we run the application the
index.jsp page will be executed first. In the index.jsp page we redirect the request to the helloWorld.do URI, which inturn invokes the HelloWorldAction.
1.<%@ taglib
uri="http://struts./tags-logic" prefix="logic" %> 2.<logic:redirect forward="helloWorld"/> In the action class we return the
ActionForward "success" which is mapped to the helloWorld.jsp page. In the helloWorld.jsp page we display the "Hello
World" message.
01.<%@taglib uri="http://struts./tags-bean"
prefix="bean" %> 02.<html> 03.<head> 04.<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1"> 05.<title>Hello World</title> 06.</head> 07.<body> 08.<bean:write name="helloWorldForm" property="message"/> 09.</body> 10.</html> After creating all the files the
directory structure of the application looks like this.  On executing the application the
"Hello World" message gets displayed to the user.  You can download the source code of
this example by clicking on the Download link below. Source: Download
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