Shiro redis is an open-source plug-in of Daniel on the Internet (github address: https://github.com/alexxiyang/shiro-redis )Recently, the following errors are always reported when using it (version 3.1.0):
We need a field to identify this Cache Object in Redis. So you need to defined an id field which you can get unique id to identify this principal. For example, if you use UserInfo as Principal class, the id field maybe userId, userName, email, etc. For example, getUserId(), getUserName(), getEmail(), etc. Default value is authCacheKey or id, that means your principal object has a method called "getAuthCacheKey()" or "getId()"] with root cause org.crazycake.shiro.exception.PrincipalInstanceException: class com.xxx.blog.base.LoginBean must has getter for field: authCacheKey or id We need a field to identify this Cache Object in Redis. So you need to defined an id field which you can get unique id to identify this principal. For example, if you use UserInfo as Principal class, the id field maybe userId, userName, email, etc. For example, getUserId(), getUserName(), getEmail(), etc. Default value is authCacheKey or id, that means your principal object has a method called "getAuthCacheKey()" or "getId()" at org.crazycake.shiro.RedisCache.getRedisKeyFromPrincipalIdField(RedisCache.java:150) at org.crazycake.shiro.RedisCache.getStringRedisKey(RedisCache.java:126) at org.crazycake.shiro.RedisCache.getRedisCacheKey(RedisCache.java:118) at org.crazycake.shiro.RedisCache.remove(RedisCache.java:103) at org.apache.shiro.realm.AuthorizingRealm.clearCachedAuthorizationInfo(AuthorizingRealm.java:386) at org.apache.shiro.realm.AuthorizingRealm.doClearCache(AuthorizingRealm.java:663) at org.apache.shiro.realm.CachingRealm.clearCache(CachingRealm.java:170) at org.apache.shiro.realm.CachingRealm.onLogout(CachingRealm.java:152) at org.apache.shiro.authc.pam.ModularRealmAuthenticator.onLogout(ModularRealmAuthenticator.java:290) at org.apache.shiro.mgt.DefaultSecurityManager.logout(DefaultSecurityManager.java:562) at org.apache.shiro.subject.support.DelegatingSubject.logout(DelegatingSubject.java:367) at com.huangbl.blog.filter.CheckSessionControlFilter.onAccessDenied(CheckSessionControlFilter.java:94) at org.apache.shiro.web.filter.AccessControlFilter.onAccessDenied(AccessControlFilter.java:133) at org.apache.shiro.web.filter.AccessControlFilter.onPreHandle(AccessControlFilter.java:162) at org.apache.shiro.web.filter.PathMatchingFilter.isFilterChainContinued(PathMatchingFilter.java:203) at org.apache.shiro.web.filter.PathMatchingFilter.preHandle(PathMatchingFilter.java:178) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:131) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:387) at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)
. I went to check that my loginBean has an id attribute, but it is inherited from the parent class. I immediately realized that the open source framework might not consider reading the id attribute from the parent class. Later, I noticed that the author said in github not to use the version below 3.1.0 (I used version 3.1.0). Then I immediately changed the version to 3.2.3 That's all right.