TC ONG [https://community.jboss.org/people/devilkazuya99] created the discussion "Drools-Spring: java.lang.ClassNotFoundException: org.drools.command.Context" To view the discussion, visit: https://community.jboss.org/message/738622#738622 -------------------------------------------------------------- I have in my beans.xml <drools:ksession id="jpaSingleSessionCommandService" type="stateful" kbase="kbase" >   <drools:configuration>   <drools:jpa-persistence>   <drools:transaction-manager ref="jpaTxManager" />   <drools:entity-manager-factory ref="myEmf" />   </drools:jpa-persistence>   </drools:configuration> </drools:ksession> and I get these error message Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaSingleSessionCommandService': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/drools/command/Context      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)      at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)      at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:848)      at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:790)      at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:707)      at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478)      ... 23 more Caused by: java.lang.NoClassDefFoundError: org/drools/command/Context      at java.lang.ClassLoader.defineClass1(Native Method)      at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)      at java.lang.ClassLoader.defineClass(ClassLoader.java:615)      at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)      at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2820)      at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1150)      at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1645)      at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1523)      at java.lang.Class.getDeclaredConstructors0(Native Method)      at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)      at java.lang.Class.getConstructor0(Class.java:2699)      at java.lang.Class.getConstructor(Class.java:1657)      at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:126)      at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newStatefulKnowledgeSession(KnowledgeStoreServiceImpl.java:67)      at org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:122)      at org.drools.container.spring.beans.StatefulKnowledgeSessionBeanFactory.internalAfterPropertiesSet(StatefulKnowledgeSessionBeanFactory.java:85)      at org.drools.container.spring.beans.AbstractKnowledgeSessionBeanFactory.afterPropertiesSet(AbstractKnowledgeSessionBeanFactory.java:123)      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)      ... 33 more Caused by: java.lang.ClassNotFoundException: org.drools.command.Context      at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678)      at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1523)      ... 52 more I'm using drools 5.4.0 and jbpm 5.3.0. I'd checked the drools-core-5.4.0.Final.jar and org.drools.command.Context is no longer there. Any idea? -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/738622#738622] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]