Question

我正在尝试使用Terracotta在分布式环境中设置EHCache。在这里，我能够连接应用服务器和Terracotta服务器，在terracotta Developer Console中，我能够看到复制的对象。

但是在应用程序服务器中不断出现异常消息，尽管应用程序的其余部分正常运行：

大家好，如果有任何机构可以指导为什么会出现此异常消息以及我们如何解决它。另外，对于我有任何关于为hibernate应用程序设置兵马俑的全面教程也很有帮助。

这里[CacheByAmitNode8081]是我在应用服务器中定义的缓存节点的名称。

[DEBUG][04/05/12 12:49:07.973][CacheByAmitNode8081] Running mbean initializer task for ehcache hibernate...
[DEBUG][04/05/12 12:49:07.995][CacheByAmitNode8081] Successfully registered bean
[ERROR][04/05/12 12:49:08.000][CacheByAmitNode8081] Error locating Hibernate Session Factory
java.lang.NullPointerException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:36)
at sun.reflect.UnsafeQualifiedObjectFieldAccessorImpl.get(UnsafeQualifiedObjectFieldAccessorImpl.java:20)
at java.lang.reflect.Field.get(Field.java:358)
at org.hibernate.cache.ehcache.management.impl.ProviderMBeanRegistrationHelper$RegisterMBeansTask.locateSessionFactory(ProviderMBeanRegistrationHelper.java:152)
at org.hibernate.cache.ehcache.management.impl.ProviderMBeanRegistrationHelper$RegisterMBeansTask.run(ProviderMBeanRegistrationHelper.java:117)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)
[DEBUG][04/05/12 12:49:08.001][CacheByAmitNode8081] SessionFactory is probably still being initialized... waiting for it to complete before enabling hibernate statistics monitoring via JMX
[DEBUG][04/05/12 12:49:08.001][CacheByAmitNode8081] Running mbean initializer task for ehcache hibernate...
[ERROR][04/05/12 12:49:08.001][CacheByAmitNode8081] Error locating Hibernate Session Factory
java.lang.NullPointerException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:36)
at sun.reflect.UnsafeQualifiedObjectFieldAccessorImpl.get(UnsafeQualifiedObjectFieldAccessorImpl.java:20)
at java.lang.reflect.Field.get(Field.java:358)
at org.hibernate.cache.ehcache.management.impl.ProviderMBeanRegistrationHelper$RegisterMBeansTask.locateSessionFactory(ProviderMBeanRegistrationHelper.java:152)
at org.hibernate.cache.ehcache.management.impl.ProviderMBeanRegistrationHelper$RegisterMBeansTask.run(ProviderMBeanRegistrationHelper.java:117)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)*

Answer 1

当您使用Terracotta时，您需要在类路径上添加特定的赤陶罐，以替换ehcache实现。在你的异常堆栈中，我没有看到任何兵马俑类输出...

在我的maven依赖项中，我有：

<dependency>
  <groupId>net.sf.ehcache</groupId>
  <artifactId>ehcache-core-ee</artifactId>
  <version>2.5.2</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>net.sf.ehcache</groupId>
  <artifactId>ehcache-terracotta-ee</artifactId>
  <version>2.5.2</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>org.terracotta</groupId>
  <artifactId>terracotta-toolkit-1.5-runtime-ee</artifactId>
  <version>4.2.0</version>
  <scope>compile</scope>
</dependency>

您还可以查看有关如何插入Hibernate的Terracotta教程： http://terracotta.org/documentation/enterprise-ehcache/get-started-hibernate

会话工厂问题在设置hibernate分布式ehcache与兵马俑

1 个答案: