登录
当前位置： 首页 > 知识库问答 >
问题：

为什么WsSessionListener.sessionCreated（）在embed tomcat 9中发出'AbstractmetodError'？

傅朝
2023-03-14

我使用springboot2.1.2.RELEASE的Web应用程序，它包含嵌入tomcat 9版本。

创建新会话时，它会发出 AbstractMethodError： null 异常

https://github.com/apache/tomcat/blob/trunk/java/org/apache/catalina/session/StandardSession.java#L388

有问题的侦听器是WsSessionListener

从tomcat 9开始，WsSessionListener删除了speaseCreated（）实现，它只是调用父接口HttpSessionListener的默认sultsionCreated（）方法。这似乎根本不是问题。（tomcat-embed-core， tomcat-embed-websocket 是相同的版本 9.0.14）

WsSessionListener in tomcat9： https://github.com/apache/tomcat/blob/trunk/java/org/apache/tomcat/websocket/server/WsSessionListener.java#L22

HttpSessionListener in tomcat9： https://github.com/apache/tomcat/blob/trunk/java/javax/servlet/http/HttpSessionListener.java#L30

tomcat8中的WsSessionListener：https://github.com/apache/tomcat/blob/TOMCAT_8_0_0/java/org/apache/tomcat/websocket/server/WsSessionListener.java#L22

HttpSessionListener在tomcat8：https://github.com/apache/tomcat/blob/TOMCAT_8_0_0/java/javax/servlet/http/HttpSessionListener.java#L30

当我使用tomcat 8(springboot 2.0.x)时，所有问题都没有出现。有人知道这件事吗？请给我一些帮助或推荐...

提前致谢。

java.lang.AbstractMethodError: null
    at org.apache.catalina.session.StandardSession.tellNew(StandardSession.java:388)
    at org.apache.catalina.session.StandardSession.setId(StandardSession.java:360)
    at org.apache.catalina.session.StandardSession.setId(StandardSession.java:341)
    at org.apache.catalina.session.ManagerBase.createSession(ManagerBase.java:686)
    at org.apache.catalina.connector.Request.doGetSession(Request.java:3018)
    at org.apache.catalina.connector.Request.getSession(Request.java:2416)
    at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:908)
    at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:920)
    at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:279)
    at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:279)
    at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:279)
    at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:279)
    at org.springframework.security.web.session.SimpleRedirectInvalidSessionStrategy.onInvalidSessionDetected(SimpleRedirectInvalidSessionStrategy.java:52)
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:130)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:150)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:158)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:107)
    at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:73)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:74)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270)
    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.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
    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$SocketProcessor.doRun(NioEndpoint.java:1417)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$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)

共有2个答案

宰父正真
2023-03-14

只是为了更清楚。问题似乎是类WsSessionListener实现了方法HttpSessionListener#sionsionCreated（）。javax.servlet-api 4. X版本中的这个方法是一个默认方法。Java在抱怨有一个对那个方法的调用，如果你比较两个实现，你可以检查出第9个版本不再实现提到的方法了：

  • 这是一个很好的例子https://tomcat.apache.org/tomcat-8.0-doc/api/org/apache/tomcat/websocket/server/WsSessionListener.html
  • 这是一个很好的例子https://tomcat.apache.org/tomcat-9.0-doc/api/org/apache/tomcat/html" target="_blank">websocket/server/WsSessionListener.html这是一个很好的例子

因此，您的部署环境中可能有3.1.0 javax.servlet-api jar。排除这种依赖性(正如@feckless pauper指出的)应该可以解决这个问题。

我重现了这个问题，在我的例子中，spring-boot-starter-web2.2.4.RELEASE依赖于spring-boot-starter-tomcat，这依赖于tomcat-embed-websocket 9.0.30（Tomcat 9支持Java8及更高版本，其中引入了接口中的默认方法）。

沙靖琪
2023-03-14

我注意到Spring Boot2.1.2.RELEASE（带有嵌入式Tomcat9.0.14）的一个非常相似的错误。它似乎不会影响应用程序的运行能力，但在日志中看到它肯定很烦人。

java.lang.AbstractMethodError: javax/servlet/http/HttpSessionListener.sessionCreated(Ljavax/servlet/http/HttpSessionEvent;)V
    at org.apache.catalina.session.StandardSession.tellNew(StandardSession.java:388)
    at org.apache.catalina.session.StandardSession.setId(StandardSession.java:360)
    at org.apache.catalina.session.StandardSession.setId(StandardSession.java:341)
    at org.apache.catalina.session.ManagerBase.createSession(ManagerBase.java:686)
    at org.apache.catalina.connector.Request.doGetSession(Request.java:3018)
    at org.apache.catalina.connector.Request.getSession(Request.java:2416)
    at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:908)
    at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:270)
    at org.springframework.security.web.context.HttpSessionSecurityContextRepository$SaveToSessionResponseWrapper.createNewSessionIfAllowed(HttpSessionSecurityContextRepository.java:434)
    at org.springframework.security.web.context.HttpSessionSecurityContextRepository$SaveToSessionResponseWrapper.saveContext(HttpSessionSecurityContextRepository.java:367)
    at org.springframework.security.web.context.HttpSessionSecurityContextRepository.saveContext(HttpSessionSecurityContextRepository.java:154)
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:115)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at com.aoins.jwt.spring.web.SharedSecretJwtAuthenticationFilter.doFilter(SharedSecretJwtAuthenticationFilter.java:88)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:74)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270)
    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.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:117)
    at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:106)
    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:199)
    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$SocketProcessor.doRun(NioEndpoint.java:1417)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1153)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:785)

我可以通过从我的依赖配置中删除< code > compile(group:' javax . servlet '，name: 'javax.servlet-api '，version: '3.1.0')来消除错误。我认为这导致了与Tomcat提供的servlet API副本的冲突。

 类似资料：
  • 为什么在liferay中出现NullPointerException？

    问题内容： 我在以下一行中得到一个： 我正在打印所有值： 输出： 那我为什么要得到呢？请帮助。谢谢。完整的堆栈跟踪如下： 问题答案： 简单的答案：您在该位置没有得到NullpointerException- 至少不是根据您发布的stacktrace。Liferay的LoginAction没有原始的StrutsAction。如果您使用的是6.2 GA5，则这是引发NullpointerExcepti

  • 为什么在ArrayList中出现ConcurrentModificationException？

    问题内容： 为什么下面的代码抛出ConcurrentModificationException？JoshBloch可以避免ConcurrentModificationException。 问题答案： 使用“ for each”循环时，不能在列表上使用remove。相反，您可以使用此方法在迭代器上调用remove： 如果您实际上想用“ 200”代替每个值，或用其他值代替，则建立一个新列表可能更有意义

  • 为什么在python中发生此AttributeError？

    问题内容： 有一件我不理解的事情。 为什么这样 产生此错误： 问题答案： 发生这种情况是因为该模块没有名为的任何属性。该属性仅在您定义时定义。 子模块不会在您刚导入时自动导入；您需要显式导入它们。对于大多数软件包来说，情况相同，尽管软件包可以根据需要选择导入自己的子模块。（例如，如果包括一份声明， 然后 将子模块会随时导入进口。）

  • 为什么在C＃和Java中出现“空”？

    问题内容： 我们注意到，用C＃（或Java）开发的软件中的许多错误都导致NullReferenceException。 为什么在语言中甚至包含了“ null”？ 毕竟，如果没有“ null”，那么我就不会有错误，对吧？ 换句话说，如果没有null，该语言的什么功能将无法正常工作？ 问题答案： “ C＃父亲” Anders Hejlsberg在他的《计算机世界》采访中谈到了这一点： 例如，在类型系统

  • 为什么我在MySQL中出现死锁

    我的MySQL表出现死锁。只涉及一个表，我可以始终如一地复制它。只有当我有多个线程运行代码时才会发生这种情况。 下面是表格： 然后，我在每个线程中运行这2个查询，每个线程具有不同的user_id值。 需要注意的是，当调用DELETE语句时，数据库中从不存在user_id X。正在使用运行这些查询的代码位创建新用户。然而，该函数允许我修改用户的帐户，因此，从旧用户的团队中删除现有的角色。 所以，当足

  • 为什么Java11在Android Studio中给出TaskExecutionException？

    所以，我正在做一个现有的大型公司项目，那里的东西很旧/不推荐使用，我正试图一步一步地改进它。 现在我正在尝试将JDK版本从Java1.8更新到Java11。所以我从Android Studio首选项设置进行了更改。 我还做了以下更改：https://developer.android.com/studio/releases/gradle-plugin#java-11 关于我的项目： 目标SDK版本

相关问答

为什么Eclipse在战争中输出资源？在spring中，为什么抛出类型为object的ThrowsAdviceInterceptor为什么Java中会出现NoClassDefFoundError？为什么FindBugs在明确抛出NPE时会发出严重警告？为什么Spring data jpa不发出JOIN查询？

相关文章

为什么我可以在Java中抛出null？为什么在python中出现此错误？（httplib）为什么在Python解释器中出现SyntaxError？为什么Spring Data JPA不发出JOIN查询？为什么在Python的JSON编码中出现UnicodeDecodeError？

相关阅读

为什么使用DevOps？为什么需要DevOps？什么是启发式搜索？MySQL触发器到底是什么？IDE（集成开发环境）是什么

相关工具

花田在线邮件群发系统发发流水记账系统假发师AlertView弹出动画Go 开发实战

相关文档

HTTP 中文开发手册SOFABoot 中文开发文档SOFARPC 中文开发文档SOFATracer 中文开发文档SOFALookout 中文开发文档
快捷导航： 新手教程 算法原理 架构设计 Java进阶 数据库进阶 大厂专栏 面试经验 编程笔记 编程问答 所有专题 文档资料 工具软件 电子书籍 小牛导航
在线工具： 房贷计算器 个税计算器 Linux命令查询 Json格式化 正则表达式 颜色转换 AES加解密 SHA1加密 MD5加密 毒鸡汤 字数统计 随机密码生成 进制转换 Base64编解码 励志句子
Copyright © 2019-2024 小牛知识库@xnip.cn. All Rights Reserved.