Struts 2 Login Form Example

VKK

11:46

In this example we will see how to create a simple login page ,validation and navigation using Struts 2

Environment Used

Java 1.7

Eclipse Juno

Apache Tomcat 7

Struts 2 Jars

1. Create a dynamic web project in Eclipse

Create a Dynamic web project in Eclipse and configure apache tomcat as Server. Once it is created download Struts 2 jars and place in to WEB-INF/lib folder. Here is the final structure of the project. (Click here to download this example with jars)

2. Update Web.xml file

Add Struts FilterDispatcher details in to 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>Struts2HelloWorldExample</display-name>
     <filter>
         <filter-name>struts2</filter-name>
         <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
     </filter>
     <filter-mapping>
         <filter-name>struts2</filter-name>
         <url-pattern>/*</url-pattern>
     </filter-mapping>
     <welcome-file-list>
         <welcome-file>index.html</welcome-file>
         <welcome-file>index.htm</welcome-file>
         <welcome-file>index.jsp</welcome-file>
         <welcome-file>default.html</welcome-file>
         <welcome-file>default.htm</welcome-file>
         <welcome-file>default.jsp</welcome-file>
     </welcome-file-list>
 </web-app>

3. Create an Action class (LoginAction.java)

package com.pretech;
 
 import com.opensymphony.xwork2.ActionSupport;
 
 public class LoginAction extends ActionSupport {
     private String name;
     private String password;
     public String getPassword() {
         return password;
     }
     public void setPassword(String password) {
         this.password = password;
     }
     public String getName() {
         return name;
     }
     public void setName(String name) {
         this.name = name;
     }
     public String execute() {
         if (name.equals("pretech") & password.equals("pretech")) {
             return SUCCESS;
         } else {
             return ERROR;
         }
     }
 }

4. Create a loginform (index.jsp)

<%@ taglib prefix="s" uri="/struts-tags" %>
 <html>
 <body>
 <s:form action="loginaction">
 <s:textfield name="name" label="Enter Username" /><br>
 <s:password name="password" label="Enter Password" /><br>
 <s:submit value="Submit" align="center" />
 </s:form>
 </body>
 </html>

5. Create a success page (success.jsp)

<%@ taglib prefix="s" uri="/struts-tags" %>
 <html>
 <head></head>
 <body>
  <h4> You
  <s:property value="name" /> Successfully logged
  </h4>
 </body>
 </html>

6. Create an error page (error.jsp)

<%@ taglib prefix="s" uri="/struts-tags" %>
 <html>
 <head></head>
 <body>
  <h4> Login Failed
  </h4>
 </body>
 </html>

7. Create Struts.xml file

<?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>
     <include file="struts-default.xml"/>
     <package name="com" extends="struts-default">
         <action name="loginaction" class="com.pretech.LoginAction">
             <result name="success">/success.jsp</result>   
                      <result name="error">/error.jsp</result>      
         </action>
     </package>
 </struts>

8. Deploy and Run application in Tomcat

Run the application and give your input