让CAS退出后返回指定的页面

CAS退出默认是转向CAS内置的退出页面，在实际应用中需要跳转到自己指定的页面。退出转向决定于org.jasig.cas.web.LogoutController，我们看一下原代码。

 

    protected ModelAndView handleRequestInternal(
        final HttpServletRequest request, final HttpServletResponse response)
        throws Exception {
        final String ticketGrantingTicketId = this.ticketGrantingTicketCookieGenerator.retrieveCookieValue(request);
        final String service = request.getParameter("service");

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

            this.ticketGrantingTicketCookieGenerator.removeCookie(response);
            this.warnCookieGenerator.removeCookie(response);
        }

        if (this.followServiceRedirects && service != null) {
            return new ModelAndView(new RedirectView(service));
        }

        return new ModelAndView(this.logoutView);
    }

 

 可以看出，当this.followServiceRedirects && service != null时才会跳转到自己指定的view,service应该都比较熟悉了，它是客户传的参数，

指定cas中心转向哪里，但我们仅仅传service 还是不行的，还需要把followServiceRedirects属性设为true,下面看看如何修改这个属性

 

修改cas-servlet.xml配置文件中的logoutController,新增属性p:followServiceRedirects="true"，修改后如下：

	<bean id="logoutController" class="org.jasig.cas.web.LogoutController"
		p:centralAuthenticationService-ref="centralAuthenticationService"
		p:logoutView="casLogoutView"
		p:followServiceRedirects="true"
		p:warnCookieGenerator-ref="warnCookieGenerator"
		p:ticketGrantingTicketCookieGenerator-ref="ticketGrantingTicketCookieGenerator" />