shiro是一个被广泛使用的安全层框架，通过xml配置方式与spring无缝对接，用户的登陆/退出/权限控制/Cookie等管理系统基础功能交给shiro来管理。
一般，在JavaWEB管理平台系统时，用户退出系统之前没需要清除用户数据和关闭连接，防止垃圾数据堆积，shiro提供了LogoutFilter过滤器，我们可以通过LogoutFilter的preHandle方法，实现清除缓存功能。
页面代码：
<div class="item" style="float:right;cursor:pointer;">
<@shiro.guest>
<a href="${base}/u/zhuti/ztzx"><span style="font-weight:bold">登录</span> |</a>
</@shiro.guest>
<@shiro.user>
<a href="${base}/b/logout">退出</a>
</@shiro.user></div>
shiro配置文件：applicationContext-shiro.xml
先贴出整个配置文件：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<bean id="shiroCacheManager" class="org.apache.shiro.cache.ehcache.EhCacheManager">
<property name="cacheManagerConfigFile" value="classpath:ehcache-shiro.xml" />
</bean>
<!-- <bean id="myRealm" class="cn.com.zhulong.app.security.shiro.MyRealm" /> -->
<!-- <bean id="casRealm" class="org.apache.shiro.cas.CasRealm"> -->
<bean id="casRealm" class="cn.com.zhulong.app.security.shiro.MyCasRealm">
</bean>
<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
<!-- <property name="sessionMode" value="native"/> -->
<property name="realm" ref="casRealm" />
<property name="cacheManager" ref="shiroCacheManager" />
<property name="sessionManager" ref="sessionManager"/>
<property name="subjectFactory" ref="casSubjectFactory" />
</bean>
<!-- 如果要实现cas的remember me的功能，需要用到下面这个bean，并设置到securityManager的subjectFactory中 -->
<bean id="casSubjectFactory" class="org.apache.shiro.cas.CasSubjectFactory"/>
<!-- 单点登录配置 -->
<!-- <bean id="casFilter" class="org.apache.shiro.cas.CasFilter"> -->
<bean id="casFilter" class="cn.com.zhulong.app.security.shiro.CasFilter">
<!--配置验证错误时的失败页面（Ticket 校验不通过时展示的错误页面） -->
<property name="failureUrl" value="/error" />
</bean>
<bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
<!-- <bean id="shiroFilter" class="cn.com.zhulong.app.security.shiro.MyShiroFilterFactoryBean"> -->
<property name="securityManager" ref="securityManager" />
<!--没有单点登录下的配置：没有权限或者失败后跳转的页面 -->
<property name="loginUrl" value="/login" />
<!--有单点登录的配置：登录 CAS 服务端地址，参数 service 为服务端的返回地址 -->
<!-- <property name="loginUrl" value="${cas.shiro.loginUrl}" /> -->
<property name="successUrl" value="/" />
<property name="unauthorizedUrl" value="/unauthorized" />
<property name="filters">
<map>
<entry key="casFilter" value-ref="casFilter"></entry>
<entry key="myperms">
<bean class="cn.com.zhulong.common.web.shiro.MyPermissionsAuthorizationFilter">
</bean>
</entry>
<entry key="touSuAuthc">
<bean class="cn.com.zhulong.app.security.shiro.TouSuFormAuthenticationFilter">
</bean>
</entry>
<!--退出过滤器-->
<entry key="logout" value-ref="logoutFilter" />
</map>
</property>
<!-- 先注释掉，先不要权限判断，只要登陆验证就可以访问，测试方便 <property name="filterChainDefinitions">
<value>
/logout=logoutFilter
/enum_js=anon
/admin/**=authc,myperms
/admin/**=authc
/admin/** = authc
/jyzk/toZycdAdd** = authc
/jyzk/zycdAdd** = authc
</value>
</property> -->
<property name="filterChainDefinitions">
<value>
/authentication* = casFilter
/res/** = anon
/enum_js = anon
/b/logout = logout
/admin/** = authc
/u/zbxmts/** = touSuAuthc
/u/** = authc
/open/** = authc
/jyzk/toZycdAdd** = authc
/jyzk/zycdAdd** = authc
</value>
</property>
</bean>
<bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor" />
<!-- 会话ID生成器 -->
<bean id="sessionIdGenerator" class="org.apache.shiro.session.mgt.eis.JavaUuidSessionIdGenerator" />
<bean id="logoutFilter" class="org.apache.shiro.web.filter.authc.LogoutFilter">
<property name="redirectUrl" value="/login" />
</bean>
<bean class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="staticMethod"
value="org.apache.shiro.SecurityUtils.setSecurityManager" />
<property name="arguments" ref="securityManager" />
</bean>
<bean id="sessionManager" class="org.apache.shiro.web.session.mgt.DefaultWebSessionManager">
<property name="globalSessionTimeout" value="1800000" />
<property name="deleteInvalidSessions" value="true" />
<property name="sessionValidationSchedulerEnabled" value="true" />
<property name="sessionValidationScheduler" ref="sessionValidationScheduler" />
<property name="sessionDAO" ref="sessionDAO" />
<property name="sessionIdCookieEnabled" value="true" />
<!-- <property name="sessionIdCookie.path" value="/365-mfgg-adminweb/" /> -->
</bean>
<!-- 会话验证调度器 -->
<bean id="sessionValidationScheduler"
class="org.apache.shiro.session.mgt.ExecutorServiceSessionValidationScheduler">
<!-- 30分钟 单位为毫秒 -->
<property name="interval" value="1800000" />
<property name="sessionManager" ref="sessionManager" />
</bean>
<bean id="sessionDAO" class="cn.com.zhulong.common.web.shiro.dao.CustomShiroSessionDAO">
<property name="shiroSessionRepository" ref="memcachedShiroSessionRepository" />
</bean>
<bean id="memcachedShiroSessionRepository" class="cn.com.zhulong.common.web.shiro.dao.MemcachedShiroSessionRepository" />
</beans>
首先页面点击退出时：拦截/b/logout找到对应logout
<property name="filterChainDefinitions">
<value>
/authentication* = casFilter
/res/** = anon
/enum_js = anon
/b/logout = logout
/admin/** = authc
/u/zbxmts/** = touSuAuthc
/u/** = authc
/open/** = authc
/jyzk/toZycdAdd** = authc
/jyzk/zycdAdd** = authc
</value>
</property>
再根据logout找到对应退出过滤器：
<property name="filters">
<map>
<entry key="casFilter" value-ref="casFilter"></entry>
<entry key="myperms">
<bean class="cn.com.zhulong.common.web.shiro.MyPermissionsAuthorizationFilter">
</bean>
</entry>
<entry key="touSuAuthc">
<bean class="cn.com.zhulong.app.security.shiro.TouSuFormAuthenticationFilter">
</bean>
</entry>
<!--退出过滤器-->
<entry key="logout" value-ref="logoutFilter" />
</map>
</property>
再根据logoutFilter找到此配置
<bean id="logoutFilter" class="org.apache.shiro.web.filter.authc.LogoutFilter">
<property name="redirectUrl" value="/login" />
</bean>
此处先执行LogoutFilter的退出清空缓存操作，然后重定向，value为重定向的地址
时间： 2024-10-06 00:39:55