There are loads and loads of Struts 2 Tutorials on the web but most of them are confusing for beginners and mostly outdated. Here is a very simple, basic and easy to understand tutorial.
Before we start you must make sure that you too are working with Apache Tomcat version 7.0.xx or higher (Apache Tomcat version 9.0 is yet in Beta), make sure you have Eclipse IDE with J2EE plugin and you have downloaded the struts2 related jar files (http://mirror.cc.columbia.edu/pub/software/apache/tomcat/tomcat-7/v7.0.61/bin/apache-tomcat-7.0.61.tar.gz) and have created a Server under eclipse.
My Configurations and Setups :- Operating system: Mac OS X 10.10.2 (Yosemite)
- Application Server : Apache Tomcat version 7.0.61
- IDE: Eclipse Indigo Service Release 2 (20120216-1857)
This is a very simple example to get started, we will have an index.php page with two fields username and password, if username = "code2care" and password ="1234" the LoginAction lets you to Homepage.jsp or else to ErrorLogin.jsp, let's get started!
1. Create a new Project under Eclipse Project Explorer: SimpleStrutsEx
2. Place the index.jsp page under SimpleStrutsEx -> WebContent
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>Simple Struts Example : Code2care</title>
</head>
<body>
<h1>Login Page : </h1>
<form action="loginForm">
<label for="uname">Enter UserName : </label>
<input type="text" name="uname"/><br/>
<label for="password">Enter Password : </label>
<input type="password" name="password"/><br/>
<input type="submit" value="Login"/>
</form>
</body>
</html>
3. Create HomePage.jsp file under SimpleStrutsEx -> WebContent
homepage.jsp<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Welcome : Admin</title>
</head>
<body>
Welcome : <s:property value="uname"/>
</body>
</html>
4. Create LoginError.jsp page and place it also under : SimpleStrutsEx -> WebContent
LoginError.jsp<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Login Error!</title>
</head>
<body>
No user found!! : <s:property value="uname"/>
</body>
</html>
5. Now lets create a package under SimpleStrutsEx -> Java Resources -> src and name it com.code2care.struts
6. Under the package, we just created in step 5 place our Action class called LoginAction.java
LoginAction.javapackage com.code2care.struts;
public class LoginAction {
private String uname;
private String password;
public String execute() throws Exception {
if(uname.equals("code2care") && password.equals("1234"))
return "SUCCESS";
else
return "ERROR";
}
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
7. Now lets create our web.xml file under : SimpleStrutsEx -> WebContent -> WEB-INF
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>StrutsExample</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<filter>
<filter-name>loginProj</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>loginProj</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
8. Now create a folder named classes under : SimpleStrutsEx -> WebContent -> WEB-INF
9. Create struts.xml under classes folder w created at step 8.
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="SimpleStrutsEx" extends="struts-default" >
<action name="loginForm"
class="com.code2care.struts.LoginAction" method="execute">
<result name="SUCCESS">/HomePage.jsp</result>
<result name="ERROR">/LoginError.jsp</result>
</action>
</package>
</struts>
Note that you have added all Struts supporting jars under SimpleStrutsEx -> WebContent -> 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
Source Code Download Link: Dropbox: SimpleStrutsEx.zip
Download PDF: Strut2 Simple Tutorial with Example.pdf
- [Fix] java.time.zone.ZoneRulesException: Unknown time-zone ID
- Parse XML file in Java using DOM Parser
- Java equals method - Tutorial
- [Program] How to read three different values using Scanner in Java
- Java: The value of the local variable string is not used
- Display Output in Java Console as a Table
- How to detect Operating System using Java code
- Java 8 Streams map() with examples
- [Fix] java: incompatible types: incompatible parameter types in lambda expression error
- Add newline character Java code example (\r \n \r\n)
- List of Java Major Minor Version Numbers
- IntelliJ Keyboard Shortcut to remove unused imports [Java]
- Java - Check if array contains the value
- [Fix] Java Exception with Lambda - Cannot invoke because object is null
- How to declare and initialize Array in Java Programming
- [Solved] com.sun.xml.ws.transport.http.servlet.WSServletContextListener ClassNotFoundException
- XmlRpcException ConnectException connection refused error
- Create a Zip file using Java Code programmatically
- List of jar files for Jax-ws (SOAP) based Java Web Services
- How to fix Java HTTP java.net.UnknownHostException
- List of jars required for Struts2 project
- [fix] java: incompatible types: double cannot be converted to java.lang.Integer Generics
- Maven BUILD FAILURE: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin
- Get the current timestamp in Java
- java: unclosed string literal [Error]
- How to remove Siri from Menu Bar [macOS Big Sur] - MacOS
- How to fix Microsoft Windows 10 update error 80070020 - Microsoft
- Bootstrap Nav Menu Dropdown on hover - Bootstrap
- Android Parsing Data for android-L failed Unsupported major.minor version 51.0 Error - Android
- How to open a new tab in Notepad++ - NotepadPlusPlus
- Notepad++ Editor alternatives for Mac OS X - NotepadPlusPlus
- Create SharePoint Site Collection with new Content database in existing web application - SharePoint
- Change Height of Android ActionBar - Android