sendticketgrantingticketaction.java

CAS在Tomcat中实现单点登录项目,单点登录（Single Sign On , 简称 SSO ）是目前比较流行的服务于企业业务整合的解决方案之一

/*
 * Copyright 2007 The JA-SIG Collaborative. All rights reserved. See license
 * distributed with this file and available online at
 * http://www.ja-sig.org/products/cas/overview/license/
 */
package org.jasig.cas.web.flow;

import org.jasig.cas.CentralAuthenticationService;
import org.jasig.cas.util.annotation.NotNull;
import org.jasig.cas.web.support.WebUtils;
import org.springframework.web.util.CookieGenerator;
import org.springframework.webflow.action.AbstractAction;
import org.springframework.webflow.execution.Event;
import org.springframework.webflow.execution.RequestContext;

/**
 * Action that handles the TicketGrantingTicket creation and destruction. If the
 * action is given a TicketGrantingTicket and one also already exists, the old
 * one is destroyed and replaced with the new one. This action always returns
 * "success".
 * 
 * @author Scott Battaglia
 * @version $Revision: 42093 $ $Date: 2007-06-14 13:41:12 -0400 (Thu, 14 Jun 2007) $
 * @since 3.0.4
 */
public final class SendTicketGrantingTicketAction extends AbstractAction {
    
    @NotNull
    private CookieGenerator ticketGrantingTicketCookieGenerator;
    
    /** Instance of CentralAuthenticationService. */
    @NotNull
    private CentralAuthenticationService centralAuthenticationService;
    
    protected Event doExecute(final RequestContext context) {
        final String ticketGrantingTicketId = WebUtils.getTicketGrantingTicketId(context); 
        final String ticketGrantingTicketValueFromCookie = (String) context.getFlowScope().get("ticketGrantingTicketId");
        
        if (ticketGrantingTicketId == null) {
            return success();
        }
        
        this.ticketGrantingTicketCookieGenerator.addCookie(WebUtils
            .getHttpServletResponse(context), ticketGrantingTicketId);

        if (ticketGrantingTicketValueFromCookie != null && ticketGrantingTicketId != ticketGrantingTicketValueFromCookie) {
            this.centralAuthenticationService
                .destroyTicketGrantingTicket(ticketGrantingTicketValueFromCookie);
        }

        return success();
    }
    
    public void setTicketGrantingTicketCookieGenerator(final CookieGenerator ticketGrantingTicketCookieGenerator) {
        this.ticketGrantingTicketCookieGenerator= ticketGrantingTicketCookieGenerator;
    }
    
    public void setCentralAuthenticationService(
        final CentralAuthenticationService centralAuthenticationService) {
        this.centralAuthenticationService = centralAuthenticationService;
    }
}