5
के साथ वसंत 3 एनपीई मैं जेपीए के साथ स्प्रिंग 3 का उपयोग कर रहा हूं और मुझे अपने वेब एप्लिकेशन में एक अड़चन समस्या दिखाई दे रही है। मेरे पास जेपीए एंटिटी मैनेजर के लिए रैपर है जो अंतर्निहित EntityManager क्रूड विधियों को कॉल करता है। मैं कभी-कभी एनपीई देखता हूं जब मैं entityManager.persist(object); पर कॉल करता हूं ऐसा लगता है कि डेटाबेस कनेक्शन खो गया है लेकिन मैं 100% कारण नहीं हूं। किसी के पास कोई अपवाद है जिसके कारण नीचे अपवाद हो सकता है?LazyConnectionDataSourceProxy AutoCommit
स्प्रिंग संस्करण: 3.0.6.RELEASE
स्प्रिंग 3 LazyConnectionDataSourceProxy.java लाइन 416:
if (this.autoCommit != null && this.autoCommit != this.target.getAutoCommit()) {
this.target.setAutoCommit(this.autoCommit);
}
अपवाद:
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
स्प्रिंग विन्यास:
<?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 त्रुटि हैंडलर:
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");
}
}
आप किस सटीक वसंत संस्करण का उपयोग कर रहे हैं? – tstorms
@ टस्टम्स 3.0.6.RELEASE – c12
क्या आपने नवीनतम वसंत संस्करण का उपयोग करने पर विचार किया है? अभी यह 3.2.2 है। रिलीज। इस तरह, हम संभावित निश्चित बग को रद्द करते हैं। – tstorms