JPA で Spring 3 を使用していますが、Web アプリケーションで断続的な問題が発生しています。基礎となる EntityManager crud メソッドを呼び出す JPA EntityManager のラッパーがあります。電話をかけると NPE が表示されることentityManager.persist(object);があります。データベース接続が失われているように見えますが、原因は 100% ではありません。以下の例外の原因となった可能性のある詳細を知っている人はいますか?
春のバージョン: 3.0.6.RELEASE
Spring 3 LazyConnectionDataSourceProxy.java 行 416:
if (this.autoCommit != null && this.autoCommit != this.target.getAutoCommit()) {
this.target.setAutoCommit(this.autoCommit);
}
例外：
Caused by: java.lang.NullPointerException
at org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy$LazyConnectionInvocationHandler.getTargetConnection(LazyConnectionDataSourceProxy.java:416)
at org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy$LazyConnectionInvocationHandler.invoke(LazyConnectionDataSourceProxy.java:376)
at $Proxy64.prepareStatement(Unknown Source)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:534)
at org.hibernate.jdbc.AbstractBatcher.prepareSelectStatement(AbstractBatcher.java:145)
at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:96)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:122)
at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:49)
at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:154)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:110)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61)
at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:646)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:620)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:624)
at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:220)
at sun.reflect.GeneratedMethodAccessor101.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240)
at $Proxy79.persist(Unknown Source)
at myapp.api.dao.impl.GenericDAOImpl.save(GenericDAOImpl.java:50)
at sun.reflect.GeneratedMethodAccessor100.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:155)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy119.save(Unknown Source)
at myapp.api.service.impl.backoffice.StoringServiceImpl.store(StoringServiceImpl.java:89)
at myapp.api.service.impl.backoffice.StoringServiceImpl.storeIncludedFeatureMessage(StoringServiceImpl.java:68)
at sun.reflect.GeneratedMethodAccessor124.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy168.storeIncludedFeatureMessage(Unknown Source)
at myapp.api.listener.backoffice.StorableMessageListener.processNew(StorableMessageListener.java:136)
at myapp.api.listener.backoffice.StorableMessageListener.onMessage(StorableMessageListener.java:187)
... 34 more
春の構成:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:hz="http://www.hazelcast.com/schema/spring"
xsi:schemaLocation="
http://www.hazelcast.com/schema/spring
http://www.hazelcast.com/schema/spring/hazelcast-spring-2.5.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<!-- Generic -->
<context:annotation-config />
<context:component-scan base-package="myapp.api" />
<aop:aspectj-autoproxy/>
<!-- JPA -->
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<tx:annotation-driven />
<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter" ref="jpaVendorAdapter" />
<property name="persistenceUnitName" value="MyApp" />
<property name="jpaProperties">
<props>
<prop key="hibernate.use_sql_comments">true</prop>
<prop key="hibernate.generate_statistics">true</prop>
<prop key="hibernate.archive.autodetection">class</prop>
<prop key="hibernate.cache.use_second_level_cache">true</prop>
<prop key="hibernate.cache.provider_class">com.hazelcast.hibernate.provider.HazelcastCacheProvider</prop>
<prop key="hibernate.cache.use_query_cache">true</prop>
<prop key="hibernate.cache.use_minimal_puts">true</prop>
</props>
</property>
</bean>
<hz:hazelcast id="instance">
<hz:config>
//rest of Hazelast config here
</hz:config>
</hz:hazelcast>
<hz:hibernate-region-factory id="regionFactory" instance-ref="instance"/>
<!-- Define JPA Provider Adapter -->
<bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true" />
<property name="generateDdl" value="true" />
<property name="databasePlatform" value="org.hibernate.dialect.OracleDialect" />
</bean>
<bean id="dataSourceTarget" class="oracle.jdbc.pool.OracleDataSource" destroy-method="close">
<property name="URL" value="jdbc:oracle:thin:@server:1525:name" />
<property name="user" value="test" />
<property name="password" value="123" />
<property name="connectionCachingEnabled" value="true" />
<property name="connectionCacheProperties">
<props merge="default">
<prop key="MinLimit">5</prop>
<prop key="MaxLimit">50</prop>
</props>
</property>
</bean>
<bean id="dataSource" class="org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy">
<property name="targetDataSource" ref="dataSourceTarget"/>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
<property name="dataSource" ref="dataSource"/>
</bean>
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="false"/>
<bean id="genericDAO" class="myapp.api.dao.impl.GenericDAOImpl">
<constructor-arg>
<value>java.io.Serializable</value>
</constructor-arg>
</bean>
<bean id="springContextHolder" class="myapp.api.util.SpringContextHolder" factory-method="getInstance" />
<bean id="executionInterceptor" class="myapp.api.listener.backoffice.ExecutionInterceptor" />
</beans>
AOP エラー ハンドラ:
package myapp.api.listener.backoffice;
import javax.jms.Message;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.util.StopWatch;
@Aspect
public class ExecutionInterceptor extends BaseListener{
//protected Log log = LogFactory.getLog(this.getClass());
private String errorDestination="ErrorQ";
@Autowired
@Qualifier("jmsTemplate")
JmsTemplate jmsTemplate;
@Around("execution(* onMessage(javax.jms.Message))")
public Object aroundOnMessage(ProceedingJoinPoint pjp) throws Throwable{
StopWatch stopWatch = new StopWatch();
stopWatch.start();
Object retVal = pjp.proceed();
stopWatch.stop();
log.trace( pjp.getSignature().getName() + " Execution Time: " + stopWatch.getTotalTimeMillis()+" ms" );
return retVal;
}
@AfterReturning("execution(* onMessage(javax.jms.Message))")
public void afterOnMessage(){
// logic to capture time
log.debug("*****************************EXIT ONMESSAGE*******************************");
}
@Around("execution(* commit(..))")
public Object aroundCommit(ProceedingJoinPoint pjp) throws Throwable{
try{
return pjp.proceed();
}catch(Throwable ex){
log.error( "Unexpected Error occured during database commit routing message to ErrorQ", ex);
jmsTemplate.convertAndSend(errorDestination, ex);
throw ex;
}finally{
log.trace( "Commiting Transaction...");
}
}
@AfterThrowing(value="execution(* onMessage(javax.jms.Message) throws java.lang.RuntimeException)",throwing="ex")
public void afterThrowingOnMessage(JoinPoint jp,RuntimeException ex) throws RuntimeException{
log.trace("Unexpected Error occured during onMessage processing routing to ErrorQ");
log.error("{{ERROR}}", ex);
Object[] args = jp.getArgs();
if (args!=null && args[0] instanceof javax.jms.Message){
Message msg = (Message)args[0];
jmsTemplate.convertAndSend(errorDestination, msg);
log.info("Unexpected Error occured successfully routed to ErrorQ");
}else
log.info("Unexpected Error occured failed to route to ErrorQ");
}
}