entitymanagerfactory is closed
时间: 2023-04-23 14:04:45 浏览: 872
"entitymanagerfactory is closed" 的意思是 "EntityManagerFactory 已关闭"。
EntityManagerFactory 是用于创建 EntityManager 实例的工厂类。如果 EntityManagerFactory 已关闭,就无法创建 EntityManager 实例或执行任何与 EntityManager 相关的操作。
通常情况下,如果 EntityManagerFactory 已关闭,可能是因为应用程序已经关闭了它的持久化单元(persistence unit),或者因为应用程序已经关闭了整个 EntityManagerFactory。
要解决此问题,您可以尝试重新创建 EntityManagerFactory 实例,或者检查应用程序的配置以确保正确关闭 EntityManagerFactory。
相关问题
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:431) at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373) at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130) at org.flowable.common.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:56) at org.flowable.common.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:30) at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:56) at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:51) at org.flowable.common.engine.impl.query.AbstractQuery.list(AbstractQuery.java:117) at org.flowable.eventregistry.impl.management.DefaultEventRegistryChangeDetectionManager.detectChanges(DefaultEventRegistryChangeDetectionManager.java:50) at org.flowable.eventregistry.impl.management.EventRegistryChangeDetectionRunnable.run(EventRegistryChangeDetectionRunnable.java:35) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset$$$capture(FutureTask.java:308) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java) 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)
这个异常是由于在执行事务期间无法打开JPA EntityManager引起的。其中嵌套的异常是“EntityManagerFactory is closed”。这可能是由于以下原因之一:
1. 在entityManagerFactory关闭之后,尝试使用它。
2. entityManagerFactory尚未成功初始化。
3. 数据库连接池中没有足够的连接可供使用。
您可以尝试重新启动应用程序或检查数据库连接是否正确。您还可以尝试增加数据库连接池的大小,以确保有足够的连接可用。如果这些步骤无法解决问题,请提供更多上下文和详细信息,以便我可以提供更准确的答案。
entitymanagerfactory not found
The error message "entitymanagerfactory not found" usually indicates that there is an issue with the configuration of your JPA (Java Persistence API) setup.
Here are a few things you can check to resolve this issue:
1. Make sure that you have included the necessary dependencies for JPA in your project's build file (pom.xml for Maven or build.gradle for Gradle).
2. Check that your persistence.xml file is properly configured with the correct settings, such as the database connection details and entity mappings.
3. Ensure that your EntityManagerFactory is being created correctly in your code and that you're using the correct persistence unit name.
If none of these solutions work, it may be helpful to provide more information about your specific setup and any relevant code snippets for further investigation.
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