来自持久存储的异常加载会话 [英] exception loading sessions from persistent storage

问题描述

我对 spring petclinic应用程序进行了很多更改。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：

I have made many changes to the spring petclinic application. At the moment, I am getting the following error message when I launch the application in a new instance of tomcat server using eclipse run as...run on server:

SEVERE: Exception loading sessions from persistent storage  

服务器和应用程序然后随后能够成功启动，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？

The server and application then subsequently are able to launch successfully, but I would like to fix whatever is causing the error message. Can anyone show me how to get past this error message?

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的位置可以解决问题。你可以查看 github上的petclinic代码来查看应用程序的结构，如果这有助于你看到哪里我应该找到问题所在。这是堆栈跟踪：

The stack trace does not list any file from the application, so I don't know where to look in the application code to fix the problem. You can look in the petclinic code at github to see the structure of the application, if that helps you see where I should look to find the problem. Here is the stack trace:

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'  

推荐答案

这与Tomcat无法加载以前序列化的Web会话有关在早期关机时保存。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。

This is to do with Tomcat not being able to load previously serialized web sessions that had been saved on an earlier shutdown. This may be because Tomcat didn't shutdown cleanly and so session objects got corrupted during serialization.

使这个错误消失的一种方法是在重启时禁用会话持久性。您可以通过编辑 CATALINA_HOME / conf / context.xml 文件并设置<$的路径名属性来完成此操作。 c $ c>< Manager> 为空字符串。这在Tomcat 7的文件中有详细记录：

One way to make this error go away would be to disable session persistence across restarts. You can do this by editing the file CATALINA_HOME/conf/context.xml and setting the pathname attribute of the <Manager> to an empty string. This is well documented in the file for Tomcat 7:

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

<Manager pathname="" />

您还应该删除任何旧的 session.ser Tomcat关闭时， CATALINA_HOME / work / Catalina / localhost /< appName> 文件夹中的文件。

You should also delete any old session.ser files from the CATALINA_HOME/work/Catalina/localhost/<appName> folder whilst Tomcat is shutdown.

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。

This may not be acceptable in your case if session persistence across restarts is needed. In which case further debugging of the issue would be necessary.

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