来自持久存储的异常加载会话

Question

我对spring petclinic应用做了很多改动.目前,当我在使用eclipse运行的tomcat服务器的新实例中启动应用程序时,我收到以下错误消息:在服务器上运行:

SEVERE: Exception loading sessions from persistent storage  

随后服务器和应用程序能够成功启动,但我想修复导致错误消息的任何内容.任何人都可以告诉我如何通过此错误消息？

堆栈跟踪不会列出应用程序中的任何文件,因此我不知道在应用程序代码中查找哪个位置来解决问题.您可以在github上查看petclinic代码以查看应用程序的结构,如果这有助于您了解我应该在哪里找到问题.这是堆栈跟踪:

INFO  EhCacheManagerFactoryBean - Initializing EhCache CacheManager
INFO  ContextLoader - Root WebApplicationContext: initialization completed in 4376 ms
Dec 16, 2013 2:51:56 PM org.apache.catalina.session.StandardManager doLoad
SEVERE: IOException while loading persisted sessions: java.io.EOFException  
java.io.EOFException
    at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2280)
    at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2749)
    at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:779)
    at java.io.ObjectInputStream.<init>(ObjectInputStream.java:279)
    at org.apache.catalina.util.CustomObjectInputStream.<init>(CustomObjectInputStream.java:58)
    at org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:246)
    at org.apache.catalina.session.StandardManager.load(StandardManager.java:204)
    at org.apache.catalina.session.StandardManager.startInternal(StandardManager.java:491)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5443)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Dec 16, 2013 2:51:56 PM org.apache.catalina.session.StandardManager startInternal
SEVERE: Exception loading sessions from persistent storage  
java.io.EOFException
    at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2280)
    at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2749)
    at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:779)
    at java.io.ObjectInputStream.<init>(ObjectInputStream.java:279)
    at org.apache.catalina.util.CustomObjectInputStream.<init>(CustomObjectInputStream.java:58)
    at org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:246)
    at org.apache.catalina.session.StandardManager.load(StandardManager.java:204)
    at org.apache.catalina.session.StandardManager.startInternal(StandardManager.java:491)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5443)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Dec 16, 2013 2:51:56 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring FrameworkServlet 'petclinic'  

Answer 1

这与Tomcat无法加载先前在早期关闭时保存的序列化Web会话有关.这可能是因为Tomcat没有干净地关闭,因此会话对象在序列化过程中被破坏.

使此错误消失的一种方法是在重新启动时禁用会话持久性.您可以通过编辑文件CATALINA_HOME/conf/context.xml并将其pathname属性设置为<Manager>空字符串来完成此操作.这在Tomcat 7的文件中有详细记录:

<!-- Uncomment this to disable session persistence across Tomcat restarts -->

<Manager pathname="" />

在Tomcat关闭时,您还应该session.ser从CATALINA_HOME/work/Catalina/localhost/<appName>文件夹中删除任何旧文件.

如果需要跨重启的会话持久性,在您的情况下这可能是不可接受的.在这种情况下,需要进一步调试问题.

Answer 2

删除tomcat"work"文件夹.重启tomcat服务器,希望现在它可以运行,没有任何异常或错误!

这可以通过在Tomcat中选择服务器并选择"Clean Tomcat Work Directory"来完成.

Answer 3

如果您正在使用 Spring Boot，只需将其添加到 application.properties 中：

server.servlet.session.persistent=false

Answer 4

只需清理Tomcat工作目录......这对我很有用.