spring为了支持shiro需要引入shiro-Spring的插件，所以需要引入下面的jar包

web.xml文件添加支持

    <!-- shiro过滤器定义 -->
	<filter>  
	    <filter-name>shiroFilter</filter-name>  
	    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>  
    <init-param>  
    <!-- 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 -->  
    <param-name>targetFilterLifecycle</param-name>  
    <param-value>true</param-value>  
    </init-param>  
	</filter>  
	<filter-mapping>  
	        <filter-name>shiroFilter</filter-name>  
	        <url-pattern>/*</url-pattern>  
	</filter-mapping>

	<!-- 自定义Realm -->
	<bean id="myRealm" class="com.liy.realm.MyRealm"/>  
	
	<!-- 安全管理器 -->
	<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">  
  	  <property name="realm" ref="myRealm"/>  
	</bean>  
	
	<!-- Shiro过滤器 -->
	<bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">  
	    <!-- Shiro的核心安全接口,这个属性是必须的 -->  
	    <property name="securityManager" ref="securityManager"/>
	    <!-- 身份认证失败，则跳转到登录页面的配置 -->  
	    <property name="loginUrl" value="/index.jsp"/>
	    <!-- 权限认证失败，则跳转到指定页面 -->  
	    <property name="unauthorizedUrl" value="/unauthor.jsp"/>  
	    <!-- Shiro连接约束配置,即过滤链的定义 -->  
	    <property name="filterChainDefinitions">  
	        <value>  
	             /login=anon
				/admin*=authc
				/student=roles[teacher]
				/teacher=perms["user:create"]
	        </value>  
	    </property>
	</bean>  
	
	<!-- 保证实现了Shiro内部lifecycle函数的bean执行 -->  
	<bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor"/>  
	
	<!-- 开启Shiro注解 -->
	<bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator" depends-on="lifecycleBeanPostProcessor"/>  
  		<bean class="org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor">  
  	  <property name="securityManager" ref="securityManager"/>  
    </bean>