org.shredzone.commons.captcha

Class CaptchaServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.springframework.web.servlet.HttpServletBean

org.springframework.web.servlet.FrameworkServlet

org.shredzone.commons.captcha.CaptchaServlet

All Implemented Interfaces:

Serializable, Servlet, ServletConfig, org.springframework.beans.factory.Aware, org.springframework.context.ApplicationContextAware, org.springframework.context.EnvironmentAware, org.springframework.core.env.EnvironmentCapable

public class CaptchaServlet
extends org.springframework.web.servlet.FrameworkServlet

This servlet creates a random captcha image, stores the correct answer in the http session, and streams the generated captcha image as PNG.

Author:

Richard "Shred" Körber

See Also:

Serialized Form

Field Summary

Fields inherited from class org.springframework.web.servlet.FrameworkServlet

DEFAULT_CONTEXT_CLASS, DEFAULT_NAMESPACE_SUFFIX, SERVLET_CONTEXT_PREFIX

Fields inherited from class org.springframework.web.servlet.HttpServletBean

logger

Constructor Summary

Constructors

Constructor and Description
CaptchaServlet()

Method Summary

Modifier and Type	Method and Description
protected void	doService(HttpServletRequest request, HttpServletResponse response)

Methods inherited from class org.springframework.web.servlet.FrameworkServlet

applyInitializers, buildLocaleContext, buildRequestAttributes, configureAndRefreshWebApplicationContext, createWebApplicationContext, createWebApplicationContext, destroy, doDelete, doGet, doOptions, doPost, doPut, doTrace, findWebApplicationContext, getContextAttribute, getContextClass, getContextConfigLocation, getContextId, getNamespace, getServletContextAttributeName, getUsernameForRequest, getWebApplicationContext, initFrameworkServlet, initServletBean, initWebApplicationContext, onApplicationEvent, onRefresh, postProcessWebApplicationContext, processRequest, refresh, service, setApplicationContext, setContextAttribute, setContextClass, setContextConfigLocation, setContextId, setContextInitializerClasses, setContextInitializers, setDispatchOptionsRequest, setDispatchTraceRequest, setNamespace, setPublishContext, setPublishEvents, setThreadContextInheritable

Methods inherited from class org.springframework.web.servlet.HttpServletBean

addRequiredProperty, createEnvironment, getEnvironment, getServletContext, getServletName, init, initBeanWrapper, setEnvironment

Methods inherited from class javax.servlet.http.HttpServlet

doHead, getLastModified, service

Methods inherited from class javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletInfo, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CaptchaServlet

public CaptchaServlet()

Method Detail

doService

protected void doService(HttpServletRequest request,
                         HttpServletResponse response)
                  throws Exception

Specified by:

doService in class org.springframework.web.servlet.FrameworkServlet

Throws:

Exception