JPAKnowledgeServiceでStatefulKnowledgeSessionを作成する際にjava.lang.NullPointerExceptionが発生する

Question

私はSpringブートアプリケーションでJPAKnowledgeServiceを動作させようとしています。このため私はhereの指示に従っています。

マイpersistence.xml：

<?xml version="1.0" encoding="UTF-8" ?> 
<persistence xmlns="http://java.sun.com/xml/ns/persistence" 
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
      xsi:schemaLocation="http://java.sun.com/xml/ns/persistence 
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"> 
    <persistence-unit name="org.jbpm.persistence.jpa" transaction-type="JTA"> 
     <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider> 
     <class>org.drools.persistence.info.SessionInfo</class> 
     <class>org.drools.persistence.info.WorkItemInfo</class> 
     <properties> 
      <property name="hibernate.connection.url" value="jdbc:mysql://localhost/databaseName"/> 
      <property name="hibernate.connection.autocommit" value="false" /> 
      <property name="hibernate.jndi.class" value="bitronix.tm.jndi.BitronixInitialContextFactory"/> 
      <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" /> 
      <property name="hibernate.connection.username" value="username"/> 
      <property name="hibernate.connection.password" value="password"/> 
      <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/> 
      <property name="hibernate.max_fetch_depth" value="3"/> 
      <property name="hibernate.hbm2ddl.auto" value="update" /> 
      <property name="hibernate.show_sql" value="true" /> 
      <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.BTMTransactionManagerLookup" /> 
     </properties> 
    </persistence-unit> 
</persistence> 

私は、トランザクション境界を定義していないと私は春そのものによって提供される2.1を使用するようにdrools-persistence-jpaからexcludehibernate-ja-2.0-apiに持っていました。このようなnewStatefulKnowledgeSession呼び出す際

<dependency> 
    <groupId>org.drools</groupId> 
    <artifactId>drools-persistence-jpa</artifactId> 
    <version>6.5.0.Final</version> 
    <exclusions> 
     <exclusion> 
      <groupId>org.hibernate.javax.persistence</groupId> 
      <artifactId>hibernate-jpa-2.0-api</artifactId> 
     </exclusion> 
    </exclusions> 
</dependency> 

：

Environment env = KnowledgeBaseFactory.newEnvironment(); 
env.set(EnvironmentName.ENTITY_MANAGER_FACTORY, Persistence.createEntityManagerFactory("org.jbpm.persistence.jpa")); 
env.set(EnvironmentName.TRANSACTION_MANAGER, TransactionManagerServices.getTransactionManager()); 

KieSession kSession = JPAKnowledgeService.newStatefulKnowledgeSession(kieBase, null, env); 

を私は次のエラーを取得しています：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'JPAKnowledgeServiceFactory' defined in class path resource [org/hasancansaral/jpaknowledgeservicesample/JPAKnowledgeServiceConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.kie.internal.runtime.StatefulKnowledgeSession]: Factory method 'JPAKnowledgeServiceFactory' threw exception; nested exception is java.lang.IllegalStateException: java.lang.reflect.InvocationTargetException 
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.4.4.RELEASE.jar:1.4.4.RELEASE] 
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:762) [spring-boot-1.4.4.RELEASE.jar:1.4.4.RELEASE] 
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:372) [spring-boot-1.4.4.RELEASE.jar:1.4.4.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-1.4.4.RELEASE.jar:1.4.4.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1187) [spring-boot-1.4.4.RELEASE.jar:1.4.4.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1176) [spring-boot-1.4.4.RELEASE.jar:1.4.4.RELEASE] 
    at org.hasancansaral.jpaknowledgeservicesample.JPAKnowledgeServiceSample.main(JPAKnowledgeServiceSample.java:15) [classes/:na] 
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.kie.internal.runtime.StatefulKnowledgeSession]: Factory method 'JPAKnowledgeServiceFactory' threw exception; nested exception is java.lang.IllegalStateException: java.lang.reflect.InvocationTargetException 
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    ... 18 common frames omitted 
Caused by: java.lang.IllegalStateException: java.lang.reflect.InvocationTargetException 
    at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:185) ~[drools-persistence-jpa-6.5.0.Final.jar:6.5.0.Final] 
    at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newKieSession(KnowledgeStoreServiceImpl.java:70) ~[drools-persistence-jpa-6.5.0.Final.jar:6.5.0.Final] 
    at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.newKieSession(KnowledgeStoreServiceImpl.java:39) ~[drools-persistence-jpa-6.5.0.Final.jar:6.5.0.Final] 
    at org.kie.internal.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:121) ~[kie-internal-6.5.0.Final.jar:6.5.0.Final] 
    at org.hasancansaral.jpaknowledgeservicesample.JPAKnowledgeServiceConfiguration.JPAKnowledgeServiceFactory(JPAKnowledgeServiceConfiguration.java:43) ~[classes/:na] 
    at org.hasancansaral.jpaknowledgeservicesample.JPAKnowledgeServiceConfiguration$$EnhancerBySpringCGLIB$$a75599c4.CGLIB$JPAKnowledgeServiceFactory$0(<generated>) ~[classes/:na] 
    at org.hasancansaral.jpaknowledgeservicesample.JPAKnowledgeServiceConfiguration$$EnhancerBySpringCGLIB$$a75599c4$$FastClassBySpringCGLIB$$6a4558.invoke(<generated>) ~[classes/:na] 
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.hasancansaral.jpaknowledgeservicesample.JPAKnowledgeServiceConfiguration$$EnhancerBySpringCGLIB$$a75599c4.JPAKnowledgeServiceFactory(<generated>) ~[classes/:na] 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_121] 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_121] 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_121] 
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_121] 
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    ... 19 common frames omitted 
Caused by: java.lang.reflect.InvocationTargetException: null 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_121] 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_121] 
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_121] 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_121] 
    at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:171) ~[drools-persistence-jpa-6.5.0.Final.jar:6.5.0.Final] 
    ... 33 common frames omitted 
Caused by: java.lang.NullPointerException: null 
    at org.drools.persistence.jta.JtaTransactionManager.getStatus(JtaTransactionManager.java:273) ~[drools-persistence-jpa-6.5.0.Final.jar:6.5.0.Final] 
    at org.drools.persistence.jpa.AbstractPersistenceContextManager.getApplicationScopedEntityManager(AbstractPersistenceContextManager.java:78) ~[drools-persistence-jpa-6.5.0.Final.jar:6.5.0.Final] 
    at org.drools.persistence.jpa.JpaPersistenceContextManager.getApplicationScopedPersistenceContext(JpaPersistenceContextManager.java:55) ~[drools-persistence-jpa-6.5.0.Final.jar:6.5.0.Final] 
    at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:103) ~[drools-persistence-jpa-6.5.0.Final.jar:6.5.0.Final] 
    ... 38 common frames omitted 

私もhere見つけることができ、このエラーを再現するサンプルレポを持っています。どんな助けでも大歓迎です。ありがとう！

Answer 1

あなたはJNDIプロバイダとしてbitrnix使用するには、Javaを指すようにクラスパスのルートにjndi.propertiesファイルを使用する必要がありますので、次の内容のsrc /メイン/リソース/ jndi.properties：それは新しいファイルを作成JtaTransactionManagerは

を調べることができそうその後、JNDIにトランザクションマネージャをバインドすることができ

Answer 2

あなたがこのプロパティをしようと、JTAトランザクションを使用しているようだ：

<property name="hibernate.transaction.jta.platform" value="org.hibernate.service.jta.platform.internal.NoJtaPlatform" />