今天重啟項(xiàng)目的時(shí)候Tomcat報(bào)了這樣的一個(gè)錯(cuò)誤：

信息: Starting Servlet Engine: Apache Tomcat/6.0.13
十一月 03, 2016 3:47:17 下午 org.apache.catalina.session.StandardManager doLoad
嚴(yán)重: IOException while loading persisted sessions: java.io.EOFException
java.io.EOFException
    at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2335)
    at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2804)
    at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:802)
    at java.io.ObjectInputStream.<init>(ObjectInputStream.java:299)
    at org.apache.catalina.util.CustomObjectInputStream.<init>(CustomObjectInputStream.java:58)
    at org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:362)
    at org.apache.catalina.session.StandardManager.load(StandardManager.java:321)
    at org.apache.catalina.session.StandardManager.start(StandardManager.java:637)
    at org.apache.catalina.core.ContainerBase.setManager(ContainerBase.java:438)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4255)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
    at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
    at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
    at org.apache.catalina.core.StandardService.start(StandardService.java:516)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)

十一月 03, 2016 3:47:17 下午 org.apache.catalina.session.StandardManager start
嚴(yán)重: Exception loading sessions from persistent storage
java.io.EOFException
    at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2335)
    at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2804)
    at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:802)
    at java.io.ObjectInputStream.<init>(ObjectInputStream.java:299)
    at org.apache.catalina.util.CustomObjectInputStream.<init>(CustomObjectInputStream.java:58)
    at org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:362)
    at org.apache.catalina.session.StandardManager.load(StandardManager.java:321)
    at org.apache.catalina.session.StandardManager.start(StandardManager.java:637)
    at org.apache.catalina.core.ContainerBase.setManager(ContainerBase.java:438)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4255)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
    at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
    at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
    at org.apache.catalina.core.StandardService.start(StandardService.java:516)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)

問題發(fā)生原因：

假如有用戶在訪問我們的Web應(yīng)用。此時(shí)如果我們重啟Tomcat，Tomcat會(huì)將保存在Session中的對(duì)象序列化到硬盤上，以便重啟時(shí)重新將保存在Session中的對(duì)象讀取出來。但此對(duì)象必須實(shí)現(xiàn)Serializable接口。Session持久化到硬盤上的形式為臨時(shí)文件，比如說下圖的 SESSIONS.ser 文件。此錯(cuò)誤是在Tomcat重啟時(shí)重新恢復(fù)這些數(shù)據(jù)但是在讀取過程中失敗時(shí)發(fā)生的，一般不會(huì)影響系統(tǒng)的使用。

解決辦法：

把tomcat\work\Catalina\localhost\工程名稱\SESSIONS.ser文件刪掉就行了。

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