EHC ❯ NullPointerException while Configuring CachePeerListeners
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Bug
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Status: Open
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2 Major
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Resolution:
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ehcache-core
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Reporter: kevinrs
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July 18, 2011
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0
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Watchers: 2
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May 28, 2013
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Description
I am attempting to upgraded from EhCache 1.5.0 to EhCache 2.4.3. I am receiving a NullPointerException from the CacheManager.configure() method which has an obvious bug in the code base. The call to cacheManagerPeerListeners.putAll(configurationHelper.createCachePeerListeners()); on line 589 is causing the NullPointerException since ConfigurationHelper.createCachePeerListeners() can return null in the case that the className of the factory configuration is null. I removed company name references due to IT Policies with companyxyz.
Here is the stack trace I am seeing on start-up.
org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘companyxyzCacheManager’ defined in class path resource [com/companyxyz/data/spring-config-data-common.xml]: Cannot create inner bean ‘net.sf.ehcache.CacheManager#102ead5’ of type [net.sf.ehcache.CacheManager] while setting bean property ‘ehCacheManager’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘net.sf.ehcache.CacheManager#102ead5’ defined in class path resource [com/companyxyz/data/spring-config-data-common.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public static net.sf.ehcache.CacheManager net.sf.ehcache.CacheManager.create(java.net.URL) throws net.sf.ehcache.CacheException] threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:230)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:117)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1245)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:472)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
at com.companyxyz.util.WebApplicationContextManager.initWebApplicationContext(WebApplicationContextManager.java:68)
at com.companyxyz.web.servlet.filter.RootFilter.doFilter(RootFilter.java:135)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘net.sf.ehcache.CacheManager#102ead5’ defined in class path resource [com/companyxyz/data/spring-config-data-common.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public static net.sf.ehcache.CacheManager net.sf.ehcache.CacheManager.create(java.net.URL) throws net.sf.ehcache.CacheException] threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:444)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:903)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:817)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:440)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:219)
… 29 more
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public static net.sf.ehcache.CacheManager net.sf.ehcache.CacheManager.create(java.net.URL) throws net.sf.ehcache.CacheException] threw exception; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:127)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:435)
… 36 more
Caused by: java.lang.NullPointerException
at java.util.concurrent.ConcurrentHashMap.putAll(ConcurrentHashMap.java:908)
at net.sf.ehcache.CacheManager.configure(CacheManager.java:589)
at net.sf.ehcache.CacheManager.init(CacheManager.java:358)
at net.sf.ehcache.CacheManager.
Here is the Spring Configuration code I am using.
Here is the EhCache Configuration file that I am using.
I have attached my EhCache Configuration to this bug report for reference.
Comments
Kevin Schmidt 2011-07-19
Fiona OShea 2011-12-08
Is there still an issue to be looked at here?
All,
I was able to work around the problem by using a different ehCache configuration. The following configuration file avoids the null pointer exception by removing the XML elements completely.