每当我尝试在实体上使用@PreUpdate批注时，都会遇到stackoverflow异常，该批注使用Embedded Auditable Entity和@EntityListeners。
在我的实体中，我试图通过服务获取用户数据，以便更新实体上的字段CreateBy / LastUpdateBy。我不能只是简单地将String放入其中，我需要引用User本身。
我已经尝试过将实体管理器注入AuditListener并手动刷新它的方法，但是它不能正常工作。另外，我尝试在spring上下文中传递User数据而不是使用服务，但是由于它保留了静态值，因此对我没有用。我需要以某种方式在AuditListener中获取User实体，而不必进入无限循环。
有什么想法吗？
这是堆栈跟踪：
2019-01-04 15:45:52 ERROR o.a.c.c.C.[.[.[.[dispatcherServlet] - Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.RuntimeException: java.lang.StackOverflowError] with root cause
java.lang.StackOverflowError: null
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:671)
at com.app.server.repositories.impl.UserRepositoryImpl$$EnhancerBySpringCGLIB$$d072e6d0.findByUsername(<generated>)
at com.app.server.services.impl.UserServiceImpl.findUserByUsername(UserServiceImpl.java:131)
at com.app.server.services.impl.UserServiceImpl$$FastClassBySpringCGLIB$$852b5ce2.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:667)
at com.app.server.services.impl.UserServiceImpl$$EnhancerBySpringCGLIB$$80381f41.findUserByUsername(<generated>)
at com.app.server.defautmodel.audit.UserTimeAuditListener.setUpdatedOn(UserTimeAuditListener.java:37)
at sun.reflect.GeneratedMethodAccessor177.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.hibernate.jpa.event.internal.ListenerCallback.performCallback(ListenerCallback.java:35)
at org.hibernate.jpa.event.internal.CallbackRegistryImpl.callback(CallbackRegistryImpl.java:97)
at org.hibernate.jpa.event.internal.CallbackRegistryImpl.preUpdate(CallbackRegistryImpl.java:71)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.invokeInterceptor(DefaultFlushEntityEventListener.java:350)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.handleInterception(DefaultFlushEntityEventListener.java:332)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.scheduleUpdate(DefaultFlushEntityEventListener.java:283)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:154)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:235)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:94)
at org.hibernate.event.internal.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:44)
at org.hibernate.internal.SessionImpl.autoFlushIfRequired(SessionImpl.java:1415)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1501)
at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1537)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1505)
at org.hibernate.query.Query.getResultList(Query.java:135)
at org.hibernate.query.criteria.internal.compile.CriteriaQueryTypeQueryAdapter.getResultList(CriteriaQueryTypeQueryAdapter.java:74)
at com.app.server.repositories.impl.UserRepositoryImpl.findByUsername(UserRepositoryImpl.java:40)
at com.app.server.repositories.impl.UserRepositoryImpl$$FastClassBySpringCGLIB$$46c3b507.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:736)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:671)
at com.app.server.repositories.impl.UserRepositoryImpl$$EnhancerBySpringCGLIB$$d072e6d0.findByUsername(<generated>)
at com.app.server.services.impl.UserServiceImpl.findUserByUsername(UserServiceImpl.java:131)
at com.app.server.services.impl.UserServiceImpl$$FastClassBySpringCGLIB$$852b5ce2.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:667)
at com.app.server.services.impl.UserServiceImpl$$EnhancerBySpringCGLIB$$80381f41.findUserByUsername(<generated>)
at com.app.server.defautmodel.audit.UserTimeAuditListener.setUpdatedOn(UserTimeAuditListener.java:37)
at sun.reflect.GeneratedMethodAccessor177.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.hibernate.jpa.event.internal.ListenerCallback.performCallback(ListenerCallback.java:35)
at org.hibernate.jpa.event.internal.CallbackRegistryImpl.callback(CallbackRegistryImpl.java:97)
at org.hibernate.jpa.event.internal.CallbackRegistryImpl.preUpdate(CallbackRegistryImpl.java:71)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.invokeInterceptor(DefaultFlushEntityEventListener.java:350)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.handleInterception(DefaultFlushEntityEventListener.java:332)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.scheduleUpdate(DefaultFlushEntityEventListener.java:283)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:154)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:235)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:94)
at org.hibernate.event.internal.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:44)
at org.hibernate.internal.SessionImpl.autoFlushIfRequired(SessionImpl.java:1415)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1501)
at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1537)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1505)
at org.hibernate.query.Query.getResultList(Query.java:135)
at org.hibernate.query.criteria.internal.compile.CriteriaQueryTypeQueryAdapter.getResultList(CriteriaQueryTypeQueryAdapter.java:74)
at com.app.server.repositories.impl.UserRepositoryImpl.findByUsername(UserRepositoryImpl.java:40)
at com.app.server.repositories.impl.UserRepositoryImpl$$FastClassBySpringCGLIB$$46c3b507.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:736)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:671)
at com.app.server.repositories.impl.UserRepositoryImpl$$EnhancerBySpringCGLIB$$d072e6d0.findByUsername(<generated>)
at com.app.server.services.impl.UserServiceImpl.findUserByUsername(UserServiceImpl.java:131)
at com.app.server.services.impl.UserServiceImpl$$FastClassBySpringCGLIB$$852b5ce2.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:667)
at com.app.server.services.impl.UserServiceImpl$$EnhancerBySpringCGLIB$$80381f41.findUserByUsername(<generated>)
at com.app.server.defautmodel.audit.UserTimeAuditListener.setUpdatedOn(UserTimeAuditListener.java:37)
at sun.reflect.GeneratedMethodAccessor177.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.hibernate.jpa.event.internal.ListenerCallback.performCallback(ListenerCallback.java:35)
at org.hibernate.jpa.event.internal.CallbackRegistryImpl.callback(CallbackRegistryImpl.java:97)
at org.hibernate.jpa.event.internal.CallbackRegistryImpl.preUpdate(CallbackRegistryImpl.java:71)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.invokeInterceptor(DefaultFlushEntityEventListener.java:350)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.handleInterception(DefaultFlushEntityEventListener.java:332)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.scheduleUpdate(DefaultFlushEntityEventListener.java:283)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:154)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:235)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:94)
at org.hibernate.event.internal.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:44)
at org.hibernate.internal.SessionImpl.autoFlushIfRequired(SessionImpl.java:1415)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1501)
at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1537)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1505)
at org.hibernate.query.Query.getResultList(Query.java:135)
at org.hibernate.query.criteria.internal.compile.CriteriaQueryTypeQueryAdapter.getResultList(CriteriaQueryTypeQueryAdapter.java:74)
at com.app.server.repositories.impl.UserRepositoryImpl.findByUsername(UserRepositoryImpl.java:40)
at com.app.server.repositories.impl.UserRepositoryImpl$$FastClassBySpringCGLIB$$46c3b507.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:736)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:671)
at com.app.server.repositories.impl.UserRepositoryImpl$$EnhancerBySpringCGLIB$$d072e6d0.findByUsername(<generated>)
at com.app.server.services.impl.UserServiceImpl.findUserByUsername(UserServiceImpl.java:131)
at com.app.server.services.impl.UserServiceImpl$$FastClassBySpringCGLIB$$852b5ce2.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:667)
at com.app.server.services.impl.UserServiceImpl$$EnhancerBySpringCGLIB$$80381f41.findUserByUsername(<generated>)
at com.app.server.defautmodel.audit.UserTimeAuditListener.setUpdatedOn(UserTimeAuditListener.java:37)
at sun.reflect.GeneratedMethodAccessor177.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.hibernate.jpa.event.internal.ListenerCallback.performCallback(ListenerCallback.java:35)
at org.hibernate.jpa.event.internal.CallbackRegistryImpl.callback(CallbackRegistryImpl.java:97)
at org.hibernate.jpa.event.internal.CallbackRegistryImpl.preUpdate(CallbackRegistryImpl.java:71)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.invokeInterceptor(DefaultFlushEntityEventListener.java:350)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.handleInterception(DefaultFlushEntityEventListener.java:332)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.scheduleUpdate(DefaultFlushEntityEventListener.java:283)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:154)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:235)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:94)
at org.hibernate.event.internal.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:44)
答案 0 :(得分：0)
默认情况下，所有交易都是read/write，并且由于您使用的是@PreUpdate，因此FlushMode交易中的read/write总是会触发所有交易。在您的情况下，如果您只想获取数据时需要绕过@PreUpdate，则您需要为交易指定的数据至少为readOnly，这将在FlushMode.NEVER中创建休眠会话，因此{ {1}}将不会被触发。为了更加安全，以防您的事务被嵌入pervios事务中，因此它将继承其属性，您可以使用@PreUpdate来暂停先前的事务执行，但是请谨慎使用，因为这可能会导致大型应用程序出现性能问题