4

当我尝试运行项目或启动 Tomcat 时，我不断收到此错误：

SEVERE: Exception loading sessions from persistent storage
java.io.InvalidClassException: com.turktrust.iab.ebs.backingbeans.MetalCikisIslemleriBean; local class incompatible: stream classdesc serialVersionUID = 5362381638722129852, local class serialVersionUID = -3788780881701361526
    at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:562)
    at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1582)
    at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1495)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1731)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
    at java.util.HashMap.readObject(HashMap.java:1030)
    at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1946)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1870)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
    at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1666)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1322)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
    at java.util.HashMap.readObject(HashMap.java:1030)
    at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
    at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1666)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1322)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
    at java.util.HashMap.readObject(HashMap.java:1030)
    at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
    at java.util.HashMap.readObject(HashMap.java:1030)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
    at org.apache.catalina.session.StandardSession.readObject(StandardSession.java:1509)
    at org.apache.catalina.session.StandardSession.readObjectData(StandardSession.java:998)
    at org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:394)
    at org.apache.catalina.session.StandardManager.load(StandardManager.java:321)
    at org.apache.catalina.session.StandardManager.start(StandardManager.java:648)
    at org.apache.catalina.core.ContainerBase.setManager(ContainerBase.java:446)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4631)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)
    at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:675)
    at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:601)
    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
    at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)
    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
    at org.apache.catalina.core.StandardService.start(StandardService.java:525)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)

我从 SVN 获得更新后出现此问题。看起来 MetalCikisIslemleriBean 类中存在一些不兼容性。我搜索了这个异常并作为解决方案添加了

private static final long serialVersionUID = 5362381638722129852L;

到 MetalCikisIslemleriBean 但仍然没有好处。Tomcat 没有启动。有人对这个问题有任何建议吗？提前致谢。

编辑：我安装了另一个 Tomcat 版本，但还是不行。我删除了 Tomcat 的 work & temp 目录和项目的 build 文件夹下的文件。这次Tomcat运行，清理和构建项目很好，但它仍然没有运行。我意识到，在项目的 backingbeans 文件夹中有两个 MetalCikisIslemleriBean 的类文件：MetalCikisIslemleriBean$1 和 MetalCikisIslemleriBean..

编辑和解决方案：Tomcat 正在缓存项目的战争文件。当我从 Tomcat 的缓存中删除战争时（在 Netbeans：服务面板 - 服务器 - Tomcat - Web 应用程序），问题就解决了。谢谢大家。

4

2 回答 2

2

我认为com.turktrust.iab.ebs.backingbeans.MetalCikisIslemleriBeanSVN 中的其他人已经改变了这一点，所以你得到了一个java.io.InvalidClassException.

问题是，您已经在任何本地存储上使用此类的旧版本存储数据（您的会话？），现在您正尝试使用新版本加载它。根据您班级的变化，这是不可能的。

最简单的解决方案是从本地存储（可能是工作目录）中删除会话数据 - 但要小心，因为您将丢失存储在用户会话中的所有信息。

更新

当tomcat关闭时，尝试从临时和工作目录中删除所有文件

于 2012-04-05T06:38:27.480 回答
0

Tomcat 在关闭一段时间后似乎保留了您已编译类的先前版本。稍后，您部署了重新编译的应用程序更新版本。当 Tomcat 想要恢复持久会话时，它无法执行此操作，因为他注意到serialVersionUID类已更改。如果那个旧的持久会话中没有重要数据，我建议通过删除SESSIONS.ser文件来删除它。我认为它可能在work目录中。

于 2012-04-05T07:09:28.457 回答