In this program, we will see how to create a "Hello World!" Example in Structs 2 in Eclipse IDE,
1. Right Click under Project Explorer and select New -> Dynamic Web Project
2. Project Name: HelloWorld, make sure you select the target runtime as the installed Apache Tomcat container version that you have installed on your system.
3. Make sure you add the following jar files in WebContent -> WEB-INF -> lib folder:
commons-fileupload-1.3.1.jar
commons-io-2.2.jar
commons-lang-2.4.jar
commons-lang3-3.2.jar
commons-logging-api-1.1.jar
freemarker-2.3.19.jar
javassist-3.11.0.GA.jar
ognl-3.0.6.jar
struts2-core-2.3.20.1.jar
xwork-core-2.3.20.1.jar
4. Create web.xml under WebContent -> WEB-INF folder,
File: web.xml<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>HelloWorld</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
5. Create a package under Java Resource -> src folder, name it com.code2care.struct2
6. Create a java class file under com.code2care.struts2 called HelloWorldAction.java (this is our action class)
File: HelloWorldAction.javapackage com.code2care.struts2;
public class HelloWorldAction {
private String name;
public String execute() throws Exception {
return "SUCCESS";
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
7. Create index.jsp under WEB-INF folder,
File: index.jsp<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Struts2 Hello World!</title>
</head>
<body>
<h1>Struts2 : Hello world example in Eclipse </h1>
<form action="helloform">
<label for="name">Enter your name : </label>
<input type="text" name="name"/><br/>
</form>
</body>
</html>
8. Create greetingsPage.jsp folder under WEB-INF folder,
File: greetingsPage.jsp<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Struts 2 Hello world!</title>
</head>
<body>
Hello <s:property value="name"/> !!
</body>
</html>
9. Create classes folder under WebContent -> WEB-INF folder
10. Create struts.xml file under classes folder,
File: struts.xml<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.devMode" value="true" />
<package name="HelloWorld" extends="struts-default">
<action name="helloform" class="com.code2care.struts2.HelloWorldAction"
method="execute">
<result name="SUCCESS">/greetingsPage.jsp</result>
</action>
</package>
</struts>
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