springboot shiro cas整合

		<!--shiro 和 cas单点登录-->
		<dependency>
			<groupId>org.apache.shiro</groupId>
			<artifactId>shiro-cas</artifactId>
			<version>1.3.2</version>
			<!--Spring Boot 内嵌Tomcat不能有servlet依赖，需要将其排除掉-->
			<exclusions>
				<exclusion>
					<groupId>javax.servlet</groupId>
					<artifactId>javax.servlet-api</artifactId>
				</exclusion>
				<exclusion>
					<groupId>javax.servlet</groupId>
					<artifactId>servlet-api</artifactId>
				</exclusion>
			</exclusions>
		</dependency>

#cas配置
cas:
  serverUrl: http://educas1.dongao.com/cas #cas server地址，外网访问需用外网IP,可以写域名
  service-project: http://springboss.dongao.com
  loginSuccessUrl: /index #登录成功地址
  unauthorizedUrl: /unauth #权限认证失败跳转地址
  casLogoutUrl: /logout #退出登录地址
  casFilterUrlPattern: / #当前项目地址，外网访问需用外网IP
  session-expireTime: 30 # Session超时时间（默认30分钟）
  ehCacheSwitch: true #shiro ehCache是否开启

package com.dongao.framework.config;

import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
import com.dongao.common.utils.spring.SpringUtils;
import com.dongao.framework.config.properties.CasProperties;
import com.dongao.framework.shiro.realm.MyShiroCasRealm;
import com.dongao.framework.shiro.session.OnlineSessionDAO;
import com.dongao.framework.shiro.session.OnlineSessionFactory;
import com.dongao.framework.shiro.web.filter.LogoutFilter;
import com.dongao.framework.shiro.web.session.OnlineWebSessionManager;
import org.apache.shiro.cache.ehcache.EhCacheManager;
import org.apache.shiro.cas.CasFilter;
import org.apache.shiro.cas.CasSubjectFactory;
import org.apache.shiro.spring.LifecycleBeanPostProcessor;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.jasig.cas.client.session.SingleSignOutFilter;
import org.jasig.cas.client.session.SingleSignOutHttpSessionListener;
import org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletListenerRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.web.filter.DelegatingFilterProxy;

import javax.servlet.Filter;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * shiro+cas配置
 * @ClassName ShiroCasConfig
 * @Version 1.0
 * @Date 2019/6/20 0020 下午 2:04
 **/
@Configuration
public class ShiroCasConfig {

    /**
     * 配置的ehcache进行数据的缓存
     *
     * @return
     */
    @Bean
    public EhCacheManager getEhCacheManager() {
        EhCacheManager ehCacheManager = new EhCacheManager();
        ehCacheManager.setCacheManagerConfigFile("classpath:ehcache/ehcache-shiro.xml");
        return ehCacheManager;
    }

    @Bean(name = "myShiroCasRealm")
    public MyShiroCasRealm myShiroCasRealm() {
        MyShiroCasRealm realm = new MyShiroCasRealm();
        return realm;
    }

    /**
     * 设置单点退出的监听器,作用是将所有的过期的session将其从对应的映射关系中移除
     * 注册单点登出listener
     * SingleSignOutHttpSessionListener用于在Cas Client应用中的Session过期时将其从对应的映射关系中移除。
     *
     * @return
     */
    @Bean
    public ServletListenerRegistrationBean singleSignOutHttpSessionListener() {
        ServletListenerRegistrationBean bean = new ServletListenerRegistrationBean();
        bean.setListener(new SingleSignOutHttpSessionListener());
        //bean.setName(""); //默认为bean name
        bean.setEnabled(true);
        //设置优先级
        bean.setOrder(Ordered.HIGHEST_PRECEDENCE);
        return bean;
    }

    /**
     * 注册单点登出filter
     * 设置单点退出的拦截器,在登录的时候，客户端会去服务端进行认证，此时认证成功之后，
     * 服务端会将地址和ST返回给客户端，而在此时该拦截器会将session跟ST绑定在一起，
     * 如果访问退出的时候，此时服务端也会将服务地址和ST返回，此时的监听器会将所有的session全部变为失效。
     * <p>
     * SingleSignOutFilter需要配置在所有Filter之前，当Cas Client通过Cas Server登录成功，
     * Cas Server会携带生成的Service Ticket回调Cas Client，
     * 此时SingleSignOutFilter会将Service Ticket与当前的Session绑定在一起。
     * 当Cas Server在进行logout后回调Cas Client应用时也会携带该Service Ticket，
     * 此时Cas Client配置的SingleSignOutFilter将会使对应的Session失效，进而达到登出的目的。
     *
     * @return
     */
    @Bean
    public FilterRegistrationBean singleSignOutFilter() {
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.setName("singleSignOutFilter");
        bean.setFilter(new SingleSignOutFilter());
        //拦截所有的请求
        bean.addUrlPatterns("/*");
        bean.setEnabled(true);
        //设置优先级
        bean.setOrder(10);
        return bean;
    }

    /**
     * 退出过滤器
     */

    public LogoutFilter logoutFilter()
    {
        LogoutFilter logoutFilter = new LogoutFilter();
        CasProperties casProperties = SpringUtils.getBean(CasProperties.class);
        String logoutUrl = casProperties.getCasServerUrl() + casProperties.getCasLogoutUrl()
                + "?service="+casProperties.getCasServiceProject() + casProperties.getCasFilterUrlPattern();
        logoutFilter.setRedirectUrl(logoutUrl);
        return logoutFilter;
    }

    /**
     * 设置shiro的拦截器工厂类
     * 在设置拦截器的时候，需要先执行cas的拦截器，再执行shiro的拦截器
     *
     * @param securityManager
     * @param casFilter
     * @return
     */
    @Bean(name = "shiroFilter")
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(DefaultWebSecurityManager securityManager,
                                                            CasFilter casFilter) {
        CasProperties casProperties = SpringUtils.getBean(CasProperties.class);
        String loginUrl = casProperties.getCasServerUrl() + "/login?service="
                + casProperties.getCasServiceProject() + casProperties.getCasFilterUrlPattern();
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        // 必须设置 SecurityManager
        shiroFilterFactoryBean.setSecurityManager(securityManager);
        // 如果不设置默认会自动寻找Web工程根目录下的"/login.jsp"页面
        shiroFilterFactoryBean.setLoginUrl(loginUrl);
        // 登录成功后要跳转的连接
        shiroFilterFactoryBean.setSuccessUrl(casProperties.getLoginSuccessUrl());
        shiroFilterFactoryBean.setUnauthorizedUrl(casProperties.getUnauthorizedUrl());
        // 添加casFilter到shiroFilter中,注意，casFilter需要放到shiroFilter的前面
        Map<String, Filter> filters = new HashMap();
        filters.put("casFilter", casFilter);
        filters.put("logout",logoutFilter());
        shiroFilterFactoryBean.setFilters(filters);

        loadShiroFilterChain(shiroFilterFactoryBean);
        return shiroFilterFactoryBean;
    }

    /**
     * 设置配置的触发的地方:用于设置shiro的拦截器，和将每一个拦截器的生命周期交给spring去管理
     * 注册DelegatingFilterProxy（Shiro）注册DelegatingFilterProxy(shiro)  是一个代理类，用于管理拦截器的生命周期，
     * 所有的请求都会拦截 ,在创建的时候，filter的执行会优先于bean的执行，所以需要使用该类先来管理bean
     * <p>
     * 该步只是将当前的的生命周期交给了spring管理，具体的管理还是需要下面的LifecycleBeanPostProcessor的对象去进行操作
     *
     * @return
     */
    @Bean
    public FilterRegistrationBean delegatingFilterProxy() {
        FilterRegistrationBean filterRegistration = new FilterRegistrationBean();
        filterRegistration.setFilter(new DelegatingFilterProxy("shiroFilter"));
        //  该值缺省为false,表示生命周期由SpringApplicationContext管理,设置为true则表示由ServletContainer管理
        //targetFilterLifecycle 指明作用于filter的所有生命周期
        filterRegistration.addInitParameter("targetFilterLifecycle", "true");
        filterRegistration.setEnabled(true);
        //拦截所有的请求
        filterRegistration.addUrlPatterns("/*");
        return filterRegistration;
    }

    /**
     * 上面设置了声明周期，下面进行设置生命周期的自动化
     * 设置方法的自动初始化和销毁，init和destory方法被自动调用。
     * 注意，如果使用了该类，则不需要手动初始化方法和销毁方法，否则出错
     *
     * @return
     */
    @Bean(name = "lifecycleBeanPostProcessor")
    public LifecycleBeanPostProcessor getLifecycleBeanPostProcessor() {
        return new LifecycleBeanPostProcessor();
    }

    /**
     * 开启注解声明:
     * 开启shiro aop 的注解支持，使用代理的方式，所以需要开启代码的支持
     *
     * @return
     */
    @Bean
    public DefaultAdvisorAutoProxyCreator getDefaultAdvisorAutoProxyCreator() {
        DefaultAdvisorAutoProxyCreator proxyCreator = new DefaultAdvisorAutoProxyCreator();
        //设置代理方式，true是cglib的代理方式，false是普通的jdk代理方式
        proxyCreator.setProxyTargetClass(true);
        return proxyCreator;
    }

    /**
     * 开启注解声明:
     *
     * @param securityManager
     * @return
     */
    @Bean
    public AuthorizationAttributeSourceAdvisor getAuthorizationAttributeSourceAdvisor(DefaultWebSecurityManager securityManager) {
        AuthorizationAttributeSourceAdvisor advisor = new AuthorizationAttributeSourceAdvisor();
        advisor.setSecurityManager(securityManager);
        return advisor;
    }

    /**
     * 自定义sessionDAO会话
     */
    @Bean
    public OnlineSessionDAO sessionDAO()
    {
        OnlineSessionDAO sessionDAO = new OnlineSessionDAO();
        return sessionDAO;
    }

    /**
     * 自定义sessionFactory会话
     */
    @Bean
    public OnlineSessionFactory sessionFactory()
    {
        OnlineSessionFactory sessionFactory = new OnlineSessionFactory();
        return sessionFactory;
    }

    /**
     * 会话管理器
     */
    @Bean
    public OnlineWebSessionManager sessionManager()
    {
        OnlineWebSessionManager manager = new OnlineWebSessionManager();
        // 加入缓存管理器
        CasProperties casProperties = SpringUtils.getBean(CasProperties.class);
        if (casProperties.isEhCacheSwitch()){
            manager.setCacheManager(getEhCacheManager());
        }
        // 删除过期的session
        manager.setDeleteInvalidSessions(true);
        // 设置全局session超时时间
        manager.setGlobalSessionTimeout(casProperties.getSessionExpireTime() * 60 * 1000);
        // 去掉 JSESSIONID
        manager.setSessionIdUrlRewritingEnabled(false);
        // 定义要使用的无效的Session定时调度器
//        manager.setSessionValidationScheduler(SpringUtils.getBean(SpringSessionValidationScheduler.class));
        // 是否定时检查session
        manager.setSessionValidationSchedulerEnabled(true);
        // 自定义SessionDao
        manager.setSessionDAO(sessionDAO());
        // 自定义sessionFactory
        manager.setSessionFactory(sessionFactory());
        return manager;
    }

    /**
     * @param myShiroCasRealm
     * @return
     */
    @Bean(name = "securityManager")
    public DefaultWebSecurityManager getDefaultWebSecurityManager(MyShiroCasRealm myShiroCasRealm) {
        DefaultWebSecurityManager dwsm = new DefaultWebSecurityManager();
        dwsm.setRealm(myShiroCasRealm);
        //用户授权/认证信息Cache, 采用EhCache 缓存
        CasProperties casProperties = SpringUtils.getBean(CasProperties.class);
        if (casProperties.isEhCacheSwitch()){
            dwsm.setCacheManager(getEhCacheManager());
        }
        // 指定 SubjectFactory
        dwsm.setSubjectFactory(new CasSubjectFactory());
//        dwsm.setSessionManager(sessionManager());
        return dwsm;
    }

    /**
     * thymeleaf模板引擎和shiro框架的整合
     */
    @Bean
    public ShiroDialect shiroDialect() {
        return new ShiroDialect();
    }

    /**
     * CAS过滤器
     *
     * @return
     */
    @Bean(name = "casFilter")
    public CasFilter getCasFilter() {
        CasProperties casProperties = SpringUtils.getBean(CasProperties.class);
        String loginUrl = casProperties.getCasServerUrl() + "/login?service=" +
                casProperties.getCasServiceProject() + casProperties.getCasFilterUrlPattern();
        CasFilter casFilter = new CasFilter();
        //自动注入拦截器的名称
        casFilter.setName("casFilter");
        //是否自动的将当前的拦截器进行注入
        casFilter.setEnabled(true);
        // 登录失败后跳转的URL，也就是 Shiro 执行 CasRealm 的 doGetAuthenticationInfo 方法向CasServer验证tiket
        // 我们选择认证失败后重新登录
        casFilter.setFailureUrl(loginUrl);
        return casFilter;
    }

    /**
     * 加载shiroFilter权限控制规则（从数据库读取然后配置）,角色/权限信息由MyShiroCasRealm对象提供doGetAuthorizationInfo实现获取来的
     *
     * @param shiroFilterFactoryBean
     */
    private void loadShiroFilterChain(ShiroFilterFactoryBean shiroFilterFactoryBean) {
        Map<String, String> filterChainDefinitionMap = new LinkedHashMap<String, String>();
        // authc：该过滤器下的页面必须登录后才能访问，它是Shiro内置的一个拦截器org.apache.shiro.web.filter.authc.FormAuthenticationFilter
        // anon: 可以理解为不拦截
        // user: 登录了就不拦截
        // roles["admin"] 用户拥有admin角色
        // perms["permission1"] 用户拥有permission1权限
        // filter顺序按照定义顺序匹配，匹配到就验证，验证完毕结束。
        // url匹配通配符支持：? * **,分别表示匹配1个，匹配0-n个（不含子路径），匹配下级所有路径

        //1.shiro集成cas后，首先添加该规则
        CasProperties casProperties = SpringUtils.getBean(CasProperties.class);
        filterChainDefinitionMap.put(casProperties.getCasFilterUrlPattern(), "casFilter");
        //logut请求采用logout filter

        //2.不拦截的请求 对静态资源设置匿名访问
        filterChainDefinitionMap.put("/favicon.ico**", "anon");
        filterChainDefinitionMap.put("/dongao.png**", "anon");
        filterChainDefinitionMap.put("/css/**", "anon");
        filterChainDefinitionMap.put("/docs/**", "anon");
        filterChainDefinitionMap.put("/fonts/**", "anon");
        filterChainDefinitionMap.put("/img/**", "anon");
        filterChainDefinitionMap.put("/ajax/**", "anon");
        filterChainDefinitionMap.put("/js/**", "anon");
        filterChainDefinitionMap.put("/dongao/**", "anon");
        filterChainDefinitionMap.put("/druid/**", "anon");
        filterChainDefinitionMap.put("/captcha/captchaImage**", "anon");
        filterChainDefinitionMap.put("/error", "anon");
        // 退出 logout地址，shiro去清除session
        // 此处将logout页面设置为anon，而不是logout，因为logout被单点处理，而不需要再被shiro的logoutFilter进行拦截
        filterChainDefinitionMap.put("/logout", "logout");
        // 不需要拦截的访问
        filterChainDefinitionMap.put("/login", "anon");
        //不需要登录拦截的接口
        filterChainDefinitionMap.put("/system/api/**","anon");

        //3.拦截的请求（从本地数据库获取或者从casserver获取(webservice,http等远程方式)，看你的角色权限配置在哪里）
        filterChainDefinitionMap.put("/user", "authc");

        //4.登录过的不拦截
        filterChainDefinitionMap.put("/**", "authc");

        shiroFilterFactoryBean.setFilterChainDefinitionMap(filterChainDefinitionMap);
    }

}

<?xml version="1.0" encoding="UTF-8"?>
<ehcache name="dongao" updateCheck="false">

    <!-- 磁盘缓存位置 -->
    <diskStore path="java.io.tmpdir"/>

    <!-- 默认缓存 -->
    <defaultCache
            maxEntriesLocalHeap="1000"
            eternal="false"
            timeToIdleSeconds="3600"
            timeToLiveSeconds="3600"
            overflowToDisk="false">
    </defaultCache>

    <!-- 登录记录缓存 锁定10分钟 -->
    <cache name="loginRecordCache"
           maxEntriesLocalHeap="2000"
           eternal="false"
           timeToIdleSeconds="600"
           timeToLiveSeconds="0"
           overflowToDisk="false"
           statistics="true">
    </cache>

</ehcache>

package com.dongao.framework.shiro.realm;

import com.dongao.framework.config.properties.CasProperties;
import com.dongao.framework.util.RedisUtils;
import com.dongao.framework.util.ShiroUtils;
import com.dongao.system.domain.SysUser;
import com.dongao.system.service.ISysMenuService;
import com.dongao.system.service.ISysRoleService;
import com.dongao.system.service.ISysUserService;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.cas.CasRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;

import javax.annotation.PostConstruct;
import java.util.HashSet;
import java.util.Set;

/**
 * 直接继承CasRealm类，然后CasRealm已经完成了数据的认证工作，我们直接调用父类的功能即可
 * @ClassName MyShiroCasRealm
 * @Version 1.0
 * @Date 2019/6/20 0020 下午 1:39
 **/

public class MyShiroCasRealm extends CasRealm {

    private static final Logger logger = LoggerFactory.getLogger(MyShiroCasRealm.class);
    @Autowired
    private ISysMenuService menuService;
    @Autowired
    private ISysRoleService roleService;

    @Autowired
    private ISysUserService userService;

    @Autowired
    private CasProperties casProperties;

    @PostConstruct
    public void initProperty(){
        // cas server地址
        setCasServerUrlPrefix(casProperties.getCasServerUrl());
        // 客户端回调地址,表示当你认证中心认证完成之后需要访问的service地址
        setCasService(casProperties.getCasServiceProject() + casProperties.getCasFilterUrlPattern());
    }

    /**
     * 权限认证，为当前登录的Subject授予角色和权限
     * 本例中该方法的调用时机为需授权资源被访问时
     * 并且每次访问需授权资源时都会执行该方法中的逻辑，这表明本例中默认并未启用AuthorizationCache
     * 如果连续访问同一个URL（比如刷新），该方法不会被重复调用，Shiro有一个时间间隔（也就是cache时间，在ehcache-shiro.xml中配置），超过这个时间间隔再刷新页面，该方法会被执行
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        logger.info("##################Shiro权限认证##################");
        // 返回null的话，就会导致任何用户访问被拦截的请求时，都会自动跳转到unauthorizedUrl指定的地址
        String loginName = (String) SecurityUtils.getSubject().getPrincipal();
        logger.info("授权 loginName："+loginName);

        String username = (String) super.getAvailablePrincipal(principalCollection);
        logger.info("授权 username："+username);
        SysUser user = ShiroUtils.getSysUser();
        if(user==null){
            logger.info("ShiroUtil获取用户为空！");
            user = userService.selectUserByLoginName(username);
        }
        // 角色列表
        Set<String> roles = new HashSet<String>();
        // 功能列表
        Set<String> menus = new HashSet<String>();
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        // 管理员拥有所有权限
        if (user.isAdmin())
        {
            info.addRole("admin");
            info.addStringPermission("*:*:*");
        }
        else
        {
            roles = roleService.selectRoleKeys(user.getUserId());
            menus = menuService.selectPermsByUserId(user.getUserId());
            // 角色加入 AuthorizationInfo认证对象
            info.setRoles(roles);
            // 权限加入 AuthorizationInfo认证对象
            info.setStringPermissions(menus);
        }
        RedisUtils.set("simpleAuthorizationInfo_userId_"+user.getUserId(),info);
        return info;
    }

    /**
     * 1、CAS认证 ,验证用户身份
     * 2、将用户基本信息设置到会话中(不用了，随时可以获取的)
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) {
        // 调用父类的认证，父类认证已经完成了
        AuthenticationInfo authenticationInfo = super.doGetAuthenticationInfo(token);
        if (authenticationInfo == null) {
            logger.warn("authenticationInfo为空，可能是退出了！");
            return null;
        }
        String account = (String) authenticationInfo.getPrincipals().getPrimaryPrincipal();
        logger.info("认证 account："+account);
        SysUser user = userService.selectUserByLoginName(account);
        if (user == null){
            throw new UnknownAccountException();
        }
        logger.info("认证 user："+user);
        logger.info("认证 userId："+user.getUserId());
        SecurityUtils.getSubject().getSession().setAttribute("user", user);
        SecurityUtils.getSubject().getSession().setAttribute("userId", user.getUserId());
        SecurityUtils.getSubject().getSession().setAttribute("username", account);
        return authenticationInfo;
    }

    /**
    * 清理缓存权限
    */
    public void clearCachedAuthorizationInfo()
    {
        this.clearCachedAuthorizationInfo(SecurityUtils.getSubject().getPrincipals());
    }
}

package com.dongao.framework.shiro.web.filter;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;

import com.dongao.framework.util.RedisUtils;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.session.SessionException;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.web.servlet.AdviceFilter;
import org.apache.shiro.web.util.WebUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.dongao.common.constant.Constants;
import com.dongao.common.utils.MessageUtils;
import com.dongao.common.utils.StringUtils;
import com.dongao.framework.manager.AsyncManager;
import com.dongao.framework.manager.factory.AsyncFactory;
import com.dongao.framework.util.ShiroUtils;
import com.dongao.system.domain.SysUser;

import java.util.Locale;

/**
 * 退出过滤器
 *
 * @author dongao
 */
public class LogoutFilter extends AdviceFilter
{
    private static final Logger log = LoggerFactory.getLogger(LogoutFilter.class);
    public static final String DEFAULT_REDIRECT_URL = "/";
    private String redirectUrl = "/";
    private boolean postOnlyLogout = false;

    public LogoutFilter() {
    }

    @Override
    protected boolean preHandle(ServletRequest request, ServletResponse response) throws Exception {
        Subject subject = this.getSubject(request, response);
        if(this.isPostOnlyLogout() && !WebUtils.toHttp(request).getMethod().toUpperCase(Locale.ENGLISH).equals("POST")) {
            return this.onLogoutRequestNotAPost(request, response);
        } else {
            String redirectUrl = this.getRedirectUrl(request, response, subject);

            try {
                SysUser user = ShiroUtils.getSysUser();
                if (StringUtils.isNotNull(user))
                {
                    RedisUtils.del("simpleAuthorizationInfo_userId_"+user.getUserId());
                    RedisUtils.del("menus_userId_"+user.getUserId());
                    String loginName = user.getLoginName();
                    // 记录用户退出日志
                    AsyncManager.me().execute(AsyncFactory.recordLogininfor(loginName, Constants.LOGOUT, MessageUtils.message("user.logout.success")));
                }
                subject.logout();
            } catch (SessionException var6) {
                log.debug("Encountered session exception during logout.  This can generally safely be ignored.", var6);
            }

            this.issueRedirect(request, response, redirectUrl);
            return false;
        }
    }

    protected Subject getSubject(ServletRequest request, ServletResponse response) {
        return SecurityUtils.getSubject();
    }

    protected void issueRedirect(ServletRequest request, ServletResponse response, String redirectUrl) throws Exception {
        WebUtils.issueRedirect(request, response, redirectUrl);
    }

    protected String getRedirectUrl(ServletRequest request, ServletResponse response, Subject subject) {
        return this.getRedirectUrl();
    }

    public String getRedirectUrl() {
        return this.redirectUrl;
    }

    public void setRedirectUrl(String redirectUrl) {
        this.redirectUrl = redirectUrl;
    }

    protected boolean onLogoutRequestNotAPost(ServletRequest request, ServletResponse response) {
        HttpServletResponse httpServletResponse = WebUtils.toHttp(response);
        httpServletResponse.setStatus(405);
        httpServletResponse.setHeader("Allow", "POST");
        return false;
    }

    public boolean isPostOnlyLogout() {
        return this.postOnlyLogout;
    }

    public void setPostOnlyLogout(boolean postOnlyLogout) {
        this.postOnlyLogout = postOnlyLogout;
    }

    /**
     * 退出后重定向的地址
     */
    private String loginUrl;

    public String getLoginUrl()
    {
        return loginUrl;
    }

    public void setLoginUrl(String loginUrl)
    {
        this.loginUrl = loginUrl;
    }

}