Project Structure
index.jsp
<%--
Document : index
Created on : Oct 9, 2015, 10:39:53 AM
Author : Aravind Sankaran Nair
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ page import="nl.captcha.Captcha"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<center>
<form action="/CaptchaExample/validatecaptcha.jsp" method="get">
<img id="captcha" src="<c:url value="simpleCaptcha.jpg"/>" width="150"/>
<input type="text" name="securitycode"/>
<input type="submit" name="submit" value="validate captcha" id="submit" />
</form>
</center>
</body>
</html>
validatecaptcha.jsp
<%--
Document : validatecaptcha
Created on : Oct 9, 2015, 10:54:33 AM
Author : Aravind Sankaran Nair
--%>
<%@ page import="nl.captcha.Captcha"%>
<%
Captcha captcha=(Captcha)session.getAttribute(Captcha.NAME);
String securitycode = request.getParameter("securitycode");
if (captcha.isCorrect(securitycode)) {
%>
<center><font color="red">Security code matching</font></center>
<%}else {%>
<center><font color="red">Security Code Mismatch</font></center>
<%}%>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<servlet>
<servlet-name>SimpleCaptchaServlet</servlet-name>
<servlet-class>nl.captcha.servlet.SimpleCaptchaServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>SimpleCaptchaServlet</servlet-name>
<url-pattern>/simpleCaptcha.jpg</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
Needed JAR Files
imaging.jar
jstl-1.2.jar
simplecaptcha-1.1.1.jar
standard.jar
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