錯誤資訊

5:59:12.430 [http-nio-8080-exec-19] DEBUG o.a.shiro.mgt.DefaultSecurityManager - Resolved SubjectContext context session is invalid.  Ignoring and creating an anonymous (session-less) Subject instance.
org.apache.shiro.session.UnknownSessionException: There is no session with id [1861721501B2B498EFA92D3AA3305D34]
    at org.apache.shiro.session.mgt.eis.AbstractSessionDAO.readSession(AbstractSessionDAO.java:170)
    at org.apache.shiro.session.mgt.eis.CachingSessionDAO.readSession(CachingSessionDAO.java:261)
    at org.apache.shiro.session.mgt.DefaultSessionManager.retrieveSessionFromDataSource(DefaultSessionManager.java:236)
    at org.apache.shiro.session.mgt.DefaultSessionManager.retrieveSession(DefaultSessionManager.java:222)
    at org.apache.shiro.session.mgt.AbstractValidatingSessionManager.doGetSession(AbstractValidatingSessionManager.java:118)
    at org.apache.shiro.session.mgt.AbstractNativeSessionManager.lookupSession(AbstractNativeSessionManager.java:148)
    at org.apache.shiro.session.mgt.AbstractNativeSessionManager.getSession(AbstractNativeSessionManager.java:140)
    at org.apache.shiro.mgt.SessionsSecurityManager.getSession(SessionsSecurityManager.java:156)
    at org.apache.shiro.mgt.DefaultSecurityManager.resolveContextSession(DefaultSecurityManager.java:456)
    at org.apache.shiro.mgt.DefaultSecurityManager.resolveSession(DefaultSecurityManager.java:442)
    at org.apache.shiro.mgt.DefaultSecurityManager.createSubject(DefaultSecurityManager.java:338)
    at org.apache.shiro.subject.Subject$Builder.buildSubject(Subject.java:846)
    at org.apache.shiro.web.subject.WebSubject$Builder.buildWebSubject(WebSubject.java:148)
    at org.apache.shiro.web.servl
 

解決辦法:

<bean id="sessionManager" class="org.apache.shiro.web.session.mgt.DefaultWebSessionManager">
        <property name="sessionDAO" ref="sessionDAO"/>

        <property name="sessionIdCookieEnabled" value="true"/>
        <property name="sessionIdCookie" ref="sessionIdCookie"/>
    </bean>

    <!-- 指定本系統SESSIONID, 預設為: JSESSIONID 問題: 與SERVLET容器名衝突, 如JETTY, TOMCAT 等預設JSESSIONID,
        當跳出SHIRO SERVLET時如ERROR-PAGE容器會為JSESSIONID重新分配值導致登入會話丟失! -->
    <bean id="sessionIdCookie" class="org.apache.shiro.web.servlet.SimpleCookie">
        <constructor-arg name="name" value="ycyintang.session.id"/>
    </bean>
 

自定義一個不同於JSESSIONID的名字就可以了
原文：https://blog.csdn.net/caimengyuan/article/details/52526765