Question

当我在本地运行spring项目时，我没有任何异常。但是在服务器上部署时，我得到：

org.springframework.transaction.CannotCreateTransactionException: Could not open JPA EntityManager for transaction; nested exception is java.lang.IllegalStateException: EntityManagerFactory is closed
at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:450)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:378)
at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:474)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:289)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
at com.scoring.main.services.implementations.BlockNumberServiceImpl$$EnhancerBySpringCGLIB$$dd6e9601.getBlockNumberPair(<generated>)
at com.scoring.main.services.implementations.ListenerServiceImpl.getAllActualTransactions(ListenerServiceImpl.java:48)
at com.scoring.main.listeners.TransactionEventListener.lambda$new$1(TransactionEventListener.java:60)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalStateException: EntityManagerFactory is closed
    at org.hibernate.internal.SessionFactoryImpl.validateNotClosed(SessionFactoryImpl.java:498)
    at org.hibernate.internal.SessionFactoryImpl.buildEntityManager(SessionFactoryImpl.java:573)
    at org.hibernate.internal.SessionFactoryImpl.createEntityManager(SessionFactoryImpl.java:569)
    at org.hibernate.internal.SessionFactoryImpl.createEntityManager(SessionFactoryImpl.java:155)
    at org.springframework.orm.jpa.JpaTransactionManager.createEntityManagerForTransaction(JpaTransactionManager.java:468)
    at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:389)
    ... 16 more

我正在使用Spring Data Jpa，并且存储库类扩展了JpaRepository。在日志中，我了解了getBlockNumberPair方法中的BlockNumberService问题。这是我的方法的外观：

@Transactional(readOnly = true)
@Override
public BlockNumber getBlockNumberPair() {
    return blockNumberRepository.findById(1L).get();
}

问题出在哪里，为什么在本地可行？

Answer 1

通过重新启动服务器来解决。

更新：

这是詹金斯配置中的错误。我只是将我的项目推到Github中，Jenkins部署了项目。事实证明，在由詹金斯（Jenkins）重新部署之后，我启动Tomcat服务器的数量与进入Github的数量一样多，而在日志中，我得到了该例外。但是有趣的是，它如何在同一个端口中启动许多进程？在这种情况下，不应启动服务器。

无法打开JPA EntityManager进行交易；嵌套异常是java.lang.IllegalStateException：EntityManagerFactory已关闭

1 个答案: