JFinal开发项目，使用Ehcache做缓存，上线试运行期间每天都会有几次如下异常日志

Question

JFinal开发项目，使用Ehcache做缓存，上线试运行期间每天都会有几次如下异常日志：

2014-05-27 11:30:59
[ERROR]-[Thread: HTTP-9081-exec-20]-[org.apache.shiro.web.servlet.AbstractShiroFilter.updateSessionLastAccessTime()]: session.touch() method invocation has failed.  Unable to updatethe corresponding session's last access time based on the incoming request.
org.apache.shiro.cache.CacheException: net.sf.ehcache.CacheException: java.io.StreamCorruptedException: invalid stream header: 00000000
	at org.apache.shiro.cache.ehcache.EhCache.put(EhCache.java:105)
	at org.apache.shiro.session.mgt.eis.CachingSessionDAO.cache(CachingSessionDAO.java:247)
	at org.apache.shiro.session.mgt.eis.CachingSessionDAO.cache(CachingSessionDAO.java:235)
	at org.apache.shiro.session.mgt.eis.CachingSessionDAO.update(CachingSessionDAO.java:280)
	at org.apache.shiro.session.mgt.DefaultSessionManager.onChange(DefaultSessionManager.java:212)
	at org.apache.shiro.session.mgt.AbstractNativeSessionManager.touch(AbstractNativeSessionManager.java:193)
	at org.apache.shiro.session.mgt.DelegatingSession.touch(DelegatingSession.java:120)
	at org.apache.shiro.session.ProxiedSession.touch(ProxiedSession.java:100)
	at org.apache.shiro.web.servlet.AbstractShiroFilter.updateSessionLastAccessTime(AbstractShiroFilter.java:315)
	at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:364)
	at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
	at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
	at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
	at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1721)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1679)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:744)
Caused by: net.sf.ehcache.CacheException: java.io.StreamCorruptedException: invalid stream header: 00000000
	at net.sf.ehcache.store.disk.DiskStorageFactory.retrieve(DiskStorageFactory.java:939)
	at net.sf.ehcache.store.disk.Segment.decode(Segment.java:167)
	at net.sf.ehcache.store.disk.Segment.put(Segment.java:444)
	at net.sf.ehcache.store.disk.DiskStore.put(DiskStore.java:477)
	at net.sf.ehcache.store.FrontEndCacheTier.put(FrontEndCacheTier.java:257)
	at net.sf.ehcache.Cache.putInternal(Cache.java:1489)
	at net.sf.ehcache.Cache.put(Cache.java:1417)
	at net.sf.ehcache.Cache.put(Cache.java:1382)
	at org.apache.shiro.cache.ehcache.EhCache.put(EhCache.java:102)
	... 30 more
Caused by: java.io.StreamCorruptedException: invalid stream header: 00000000
	at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:804)
	at java.io.ObjectInputStream.<init>(ObjectInputStream.java:299)
	at net.sf.ehcache.util.PreferTCCLObjectInputStream.<init>(PreferTCCLObjectInputStream.java:39)
	at net.sf.ehcache.store.disk.DiskStorageFactory.read(DiskStorageFactory.java:375)
	at net.sf.ehcache.store.disk.DiskStorageFactory.retrieve(DiskStorageFactory.java:937)
	... 38 more

请问有没有哪位碰到过同样的问题呀？

Answer 1

访问速度快 感觉很明显

Answer 2

的确！

Answer 3

引用来自“枫林茵然”的评论

感谢@缪斯的情人的回答，终于找到问题的根源了，多个项目部署在同一个Tomcat下，diskStore没有修改造成的。

感谢@JFinal开源了这么好的框架，项目已上线试运行。网站地址：http://web.xf315.org/

Answer 4

感谢@缪斯的情人的回答，终于找到问题的根源了，多个项目部署在同一个Tomcat下，diskStore没有修改造成的。

感谢@JFinal开源了这么好的框架，项目已上线试运行。网站地址：http://web.xf315.org/

Answer 5

貌似被持久化的对象无法反序列化，看看是不是以前持久化的对象版本改变了，或是某些属性无法被正确反序列化

Answer 6

ehcache的原理是将所有的value值序列化后存储到本地磁盘，将一个与之对应的key值存到内存中，建立两者关联。这样就能根据key查找磁盘中的value了，当value值找不到时，或者序列化异常时就出现了你的问题。出现原因一般是这样子：value默认存储到tomcat临时目录tmp下（不同服务器不同系统该路径不同，参考 @红薯  
http://www.oschina.net/question/12_2368），当tomcat下多个实例同时往这个目录下写入缓存时，就容易出现问题了。解决方案是指定下diskStore 目录为不同的目录。